WO2019066132A1

WO2019066132A1 - User context-based authentication method having enhanced security, interactive ai agent system, and computer-readable recording medium

Info

Publication number: WO2019066132A1
Application number: PCT/KR2017/012860
Authority: WO
Inventors: 장세영
Original assignee: 주식회사 머니브레인
Priority date: 2017-09-29
Filing date: 2017-11-14
Publication date: 2019-04-04
Also published as: KR20190038489A

Abstract

A method by which an interactive AI agent system performs user authentication is provided. The method of the present invention comprises the steps of: acquiring user identification information; searching a user database for user authentication data on the basis of the user identification information, wherein the user database includes characteristic data of each user, and the authentication data includes a question/answer list including one or more questions generated on the basis of the characteristic data of each user included in the user database, and one or more answers semantically associated with each question; selecting one question from the searched for question/answer list so as to provide the question to a user terminal; receiving an answer to the question provided from the user terminal; and performing user authentication on the basis of the received answer.

Description

A user context based authentication method with enhanced security, an interactive AI agent system, and a computer readable recording medium

The present invention relates to user authentication of an interactive AI agent system, and more particularly to user authentication by authentication of a user's answer to a predetermined question or request generated based on a user context on an interactive AI agent system .

Description of the Related Art [0002] In recent years, with the development of artificial intelligence fields, especially natural language understanding fields, it has become possible to move away from the machine operation according to the conventional machine-centered command input / output method and to allow users to use natural language in a more human-friendly manner such as voice and / Interactive AI agent systems are increasingly being developed and utilized to interactively manipulate machines and obtain desired services from machines. Accordingly, in various fields, including but not limited to, an online consultation center or an online shopping mall, a user may request a desired service from the interactive AI agent system through natural language conversation in voice and / or text form From there, you can get the results you want.

On the other hand, many interactive AI agent systems collect and / or manage information (e.g., user's personal information, history information, etc.) about each user, and provide information to each user We are providing the right service. In particular, the interactive AI agent system utilized in the medical field or the financial field can collect and / or manage information requiring high security such as medical or financial information of the user. Thus, many interactive AI agent systems require each user to be authenticated prior to providing some or all services.

Many interactive AI agent systems allow a user to input a predetermined word or the like (for example, a user identifier and a password) and to verify the inputted word or the like. However, there is a fear that a predetermined word or the like is leaked for authentication. In particular, when the utilization characteristics (for example, use by voice conversation, etc.) of the interactive AI agent system are taken into consideration,

Accordingly, there is a need for a user authentication method that can provide higher security by supplementing an authentication method using existing user identifiers and the like.

According to one aspect of the present invention, a method of authenticating a user performed by an interactive AI agent system is provided. The method includes obtaining user identification information; Retrieving user authentication data from the user database based on the user identification information, the user database including the characteristic data of each user, and the authentication data being generated based on the characteristic data of each user included in the user database A query / answer list containing one or more questions and one or more answers semantically associated with each question; Selecting one of the searched question / answer lists and providing the same to the user terminal; Receiving an answer to a query provided from a user terminal; And performing user authentication based on the received answer.

According to one embodiment of the present invention, the characteristic data for each user includes at least one of a user's personal information, a user's previous conversation history, and a user's previous behavior record, and the question / One or more questions generated based on at least one of an included user's personal information, a user's previous conversation history, and a user's previous behavior record, and one or more answers semantically associated with each question.

According to one embodiment of the invention, performing the user authentication may comprise determining whether the received answer matches one or more answers semantically associated with the provided question on the question / answer list.

According to one embodiment of the present invention, the step of determining whether the received answer corresponds to one or more responses semantically associated with the provided question on the question / answer list comprises the steps of: Comparing each of the one or more responses semantically associated with the query to each other to calculate a degree of similarity between the received answer and each of the one or more answers; And determining whether the user is authenticated based on the calculated similarity.

According to an embodiment of the present invention, the behavior history of the user may include at least one of a purchase history of a user, an information retrieval history, and a service usage history.

According to another aspect of the present invention there is provided a computer-readable medium having stored thereon one or more instructions for causing a computer to perform any one of the methods described above, , A computer-readable recording medium is provided.

According to another aspect of the present invention, there is provided an interactive AI agent system configured to provide user authentication. The interactive AI agent system according to the present invention is characterized in that the user database including the user authentication data includes a characteristic data of each user and the user authentication data is based on characteristic data of each user included in the user database A query / answer list containing one or more generated questions and one or more answers semantically associated with each question; And a user authentication module, wherein the user authentication module obtains the user identification information, retrieves the question / answer list from the user database based on the user identification information, selects one of the retrieved question / answer lists To a user terminal, to receive a response to a query provided from the user terminal, and to perform user authentication based on the received response.

According to the present invention, a user authentication method with higher security can be provided, which is free from the risk of leakage of a user identifier or a password. According to the present invention, user authentication can be performed in a natural conversation, thereby improving the user experience using the interactive AI agent system.

1 is a schematic diagram of a system environment in which an interactive AI agent system may be implemented, according to one embodiment of the present invention.

FIG. 2 is a functional block diagram that schematically illustrates the functional configuration of the user terminal 102 of FIG. 1, in accordance with one embodiment of the present invention.

FIG. 3 is a functional block diagram that schematically illustrates the functional configuration of the interactive AI agent server 106 of FIG. 1, according to one embodiment of the present invention.

4 is a flow diagram illustrating an exemplary operational flow for user authentication performed by an interactive AI agent system, in accordance with an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, when it is determined that there is a possibility that the gist of the present invention may be unnecessarily blurred, a detailed description of known functions and configurations will be omitted. In addition, it should be understood that the following description is only an embodiment of the present invention, and the present disclosure is not limited thereto.

The terminology used in this disclosure is used only to describe a specific embodiment and is not used to limit the invention. For example, an element expressed in singular < Desc / Clms Page number 5 > terms should be understood as including a plurality of elements unless the context clearly dictates a singular value. It is to be understood that the term " and / or " as used in this disclosure encompasses any and all possible combinations of one or more of the listed items. It should be understood that the terms " comprises " or " having ", etc. used in the present disclosure are intended to specify that there exist features, numbers, steps, operations, elements, It is not intended to exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof, by use.

As used herein, the term " module " or " module " means a functional part that performs at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software. Also, a plurality of "modules" or "sub-modules" may be integrated into at least one software module and implemented by at least one processor, except for "module" or "sub-module" have.

In addition, all terms used in the present disclosure, including technical or scientific terms, unless otherwise defined, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It should be understood that commonly used predefined terms are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are not to be interpreted excessively or extensively unless explicitly defined otherwise in this disclosure .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a system environment 100 in which an interactive AI agent system may be implemented, in accordance with one embodiment of the present invention. The system environment 100 includes a plurality of user terminals 102a-102n, a communication network 104, an interactive AI agent server 106, and an external service server 108. As shown in FIG.

According to one embodiment of the present invention, each of the plurality of user terminals 102a-102n may be any user electronic device having wired or wireless communication capability. Each of the user terminals 102a-102n may be a variety of wired or wireless communication terminals, including, for example, a smart speaker, a music player, a game console, a digital TV, a set top box, a smart phone, a tablet PC, a desktop, a laptop, It is to be understood that the invention is not limited to any particular form. In accordance with one embodiment of the present invention, each of the user terminals 102a-102n can communicate with the interactive AI agent server 106, i. E., Via the communication network 104, with the necessary information. According to one embodiment of the present invention, each of the user terminals 102a-102n can communicate with the external service server 108 through the communication network 104, that is, send and receive necessary information. In accordance with one embodiment of the invention, each of the user terminals 102a-102n may receive user input in the form of voice, text and / or touch from the outside, and may interact with an interactive AI agent server (E.g., providing a specific conversation response and / or providing a result) corresponding to the upper user input obtained through communication with the external service server 106 (e.g., the user terminal 102) and / or with the external service server 108 Execution of a specific task, etc.) to the user.

In the embodiment of the present invention, the task execution as an operation corresponding to a user input may be performed by, for example, searching for information, purchasing goods, composing a message, composing an email, dialing, music reproduction, photographing, And the like, as well as performing various various types of tasks (but not limited thereto). In accordance with one embodiment of the present invention, each of the user terminals 102a-102n may provide a dialog response as a result of an operation corresponding to a user input, in a visual, audible and / or tactile form (e.g., Images, symbols, emoticons, hyperlinks, animations, various notices, motion, haptic feedback, and the like), and the like.

According to one embodiment of the present invention, the communication network 104 may include any wired or wireless communication network, e.g., a TCP / IP communication network. According to an embodiment of the present invention, the communication network 104 may include, for example, a Wi-Fi network, a LAN network, a WAN network, an Internet network, and the like, and the present invention is not limited thereto. In accordance with one embodiment of the present invention, the communication network 104 may be any of a variety of wired or wireless, such as Ethernet, GSM, EDGE, CDMA, TDMA, OFDM, Bluetooth, VoIP, Wi- May be implemented using a communication protocol.

According to one embodiment of the present invention, the interactive AI agent server 106 may communicate with the user terminals 102a-102n via the communication network 104. [ In accordance with one embodiment of the present invention, the interactive AI agent server 106 sends and receives necessary information to and from the user terminals 102a-102n via the communication network 104, The operation result corresponding to the user input, i.e., the user's intention, can be provided to the user.

In accordance with one embodiment of the present invention, the interactive AI agent server 106 includes at least some of the information obtained through communication with each of the user terminals 102a-102n over the communication network 104, e.g., And / or a behavior history (such as purchase of goods, information retrieval, history of use of various services, etc.). According to one embodiment of the present invention, the interactive AI agent server 106 may perform authentication procedures for the user through communication with the user terminals 102a-102n via the communication network 104. [ In accordance with one embodiment of the present invention, the interactive AI agent server 106 is operable to determine, based on information recorded in association with each user terminal 102a-102n, e.g., a conversation history and / The authentication process regarding the user can be performed. According to an embodiment of the present invention, the interactive AI agent server 106 may initiate an authentication procedure for the user before providing the predetermined service requiring user authentication.

In accordance with one embodiment of the present invention, the interactive AI agent server 106 receives user natural language input in the form of speech, text, and / or touch from the user terminals 102a-102n, for example via the communication network 104 , The received natural language input may be processed based on previously prepared models to determine the intent of the user. According to one embodiment of the present invention, the interactive AI agent server 106 may cause a corresponding operation to be performed based on the determined user intention. In accordance with one embodiment of the present invention, the interactive AI agent server 106 generates a specific control signal, e.g., to enable the user terminal 102a-102n to perform a particular task that is consistent with the user's intent, 102n. In accordance with one embodiment of the present invention, the interactive AI agent server 106 may communicate with the external service server 102 via the communication network 104, for example, to allow the user terminals 102a-102n to perform certain tasks consistent with the user's intent. Lt; RTI ID = 0.0 > 108 < / RTI >

In accordance with one embodiment of the present invention, the interactive AI agent server 106 may generate and send a specific interactive response, e.g., consistent with the user's intent, to the user terminals 102a-102n. In accordance with one embodiment of the present invention, the interactive AI agent server 106 generates a corresponding interactive response in the form of voice and / or text based on the determined user intention and sends the generated response to the communication network 104 To the user terminals 102a-102n. According to one embodiment of the present invention, the interactive response generated by the interactive AI agent server 106 may include other visual elements such as images, video, symbols, emoticons, etc., along with the natural language responses of the above- Or other auditory elements such as sound, or other tactile elements. According to one embodiment of the present invention, the same type of response (e. G., On the interactive AI agent server 106) is performed on the interactive AI agent server 106 according to the type of user input received on the user terminal 102a- (E.g., a voice response is generated if a voice input is given and a text response is generated if a text input is given), but the present invention is not limited thereto. It should be noted that according to another embodiment of the present invention, responses in the form of voice and / or text may be generated and provided irrespective of the type of user input.

According to one embodiment of the present invention, the interactive AI agent server 106 may communicate with the external service server 108 via the communication network 104, as described above. The external service server 108 may be, for example, a medical service server, a financial service server, a messaging service server, an online consultation center server, an online shopping mall server, an information search server, a map service server, a navigation service server, It is not. In accordance with one embodiment of the present invention, an interactive response based on the user's intent, which is transmitted from the interactive AI agent server 106 to the user terminals 102a-102n, It should be noted that this may include content.

Although the interactive AI agent server 106 is illustrated as being a separate physical server configured to communicate with the external service server 108 through the communication network 104, the present invention is not limited thereto. According to another embodiment of the present invention, it should be understood that the interactive AI agent server 106 may be included as part of various service servers such as a medical service server, a financial service server, an online consultation center server, or an online shopping mall server do.

2 is a functional block diagram that schematically illustrates the functional configuration of the user terminal 102 shown in FIG. 1, in accordance with one embodiment of the present invention. The user terminal 102 includes a user input receiving module 202, a sensor module 204, a program memory module 206, a processing module 208, a communication module 210, 212).

According to an embodiment of the present invention, the user input receiving module 202 may receive various types of input from a user, for example, a natural language input such as a voice input and / or a text input (and additionally, Can be received. According to one embodiment of the present invention, the user input receiving module 202 includes, for example, a microphone and an audio circuit, and can acquire a user audio input signal through a microphone and convert the obtained signal into audio data. According to an embodiment of the present invention, the user input receiving module 202 may include various types of input devices such as various pointing devices such as a mouse, a joystick, and a trackball, a keyboard, a touch panel, a touch screen, , And can acquire a text input and / or a touch input signal inputted from a user through these input devices. In accordance with one embodiment of the present invention, the user input received at the user input receiving module 202 may be associated with user authentication, performing a predetermined task, such as executing a predetermined application, or retrieving certain information, The invention is not so limited. According to another embodiment of the present invention, the user input received at the user input receiving module 202 may require only a simple conversation response regardless of user authentication, predetermined application execution, or retrieval of information. According to another embodiment of the present invention, the user input received at the user input receiving module 202 may relate to a simple statement for unilateral communication.

In accordance with one embodiment of the present invention, the sensor module 204 includes one or more different types of sensors through which the status information of the user terminal 102, such as the physical state of the user terminal 102, Software and / or hardware status, or information regarding the environmental conditions of the user terminal 102, and the like. According to an embodiment of the present invention, the sensor module 204 may include an optical sensor, for example, and may sense the ambient light condition of the user terminal 102 through the optical sensor. According to an embodiment of the present invention, the sensor module 204 includes, for example, a movement sensor and can detect whether the corresponding user terminal 102 is moving through the movement sensor. According to one embodiment of the present invention, the sensor module 204 includes, for example, a velocity sensor and a GPS sensor, and through these sensors, the position and / or orientation of the corresponding user terminal 102 can be detected. In accordance with another embodiment of the present invention, it should be appreciated that the sensor module 204 may include other various types of sensors, including temperature sensors, image sensors, pressure sensors, touch sensors, and the like.

According to one embodiment of the present invention, the program memory module 206 may be any storage medium that stores various programs that may be executed on the user terminal 102, such as various application programs and related data. In accordance with one embodiment of the present invention, program memory module 206 may include, for example, a telephone dialer application, an email application, an instant messaging application, a camera application, a music playback application, a video playback application, an image management application, , And data related to the execution of these programs. According to one embodiment of the present invention, the program memory module 206 may be configured to include various types of volatile or non-volatile memory such as DRAM, SRAM, DDR RAM, ROM, magnetic disk, optical disk, .

According to one embodiment of the present invention, the processing module 208 may communicate with each component module of the user terminal 102 and perform various operations on the user terminal 102. According to one embodiment of the present invention, the processing module 208 can drive and execute various application programs on the program memory module 206. [ According to one embodiment of the present invention, the processing module 208 may receive signals from the user input receiving module 202 and the sensor module 204, if necessary, and perform appropriate processing on these signals have. According to one embodiment of the present invention, the processing module 208 may, if necessary, perform appropriate processing on signals received from the outside via the communication module 210.

According to one embodiment of the invention, the communication module 210 is configured to allow the user terminal 102 to communicate with the interactive AI agent server 106 and / or the external service server 108 via the communication network 104 of FIG. 1 Communication. According to one embodiment of the present invention, the communication module 212 may be configured to receive signals from, for example, the user input receiving module 202 and the sensor module 204 via the communication network 104 in accordance with a predetermined protocol, To server 106 and / or to external service server 108. [ In accordance with one embodiment of the present invention, the communication module 210 may provide various signals received from the interactive AI agent server 106 and / or the external service server 108 via the communication network 104, e.g., voice and / Or a response signal including a natural language response in the form of a text, or various control signals, and perform appropriate processing according to a predetermined protocol.

According to an embodiment of the present invention, the response output module 212 may output a response corresponding to a user input in various forms such as time, auditory, and / or tactile sense. According to one embodiment of the present invention, the response output module 212 may include, for example, a speaker or a headset and may provide an audible response, e.g., voice and / or acoustic response corresponding to user input, can do. According to one embodiment of the present invention, the response output module 212 includes various display devices such as a touch screen based on technology such as LCD, LED, OLED, QLED, and the like, Such as text, symbols, video, images, hyperlinks, animations, various notices, etc., to the user. According to one embodiment of the present invention, the response output module 212 includes a motion / haptic feedback generator, through which a tactile response, e.g., motion / haptic feedback, can be provided to the user. In accordance with one embodiment of the present invention, it should be appreciated that the response output module 212 may simultaneously provide any combination of two or more of a text response, a voice response, and a motion / haptic feedback corresponding to a user input.

FIG. 3 is a functional block diagram that schematically illustrates the functional configuration of the interactive AI agent server 106 of FIG. 1, according to one embodiment of the present invention. The interactive agent server 106 includes a communication module 302, a Speech-To-Text (STT) module 304, a Natural Language Understanding (NLU) module 306 A dialogue understanding knowledge base 308, a user database 310, a user authentication module 312, a dialogue management module 314, a dialogue generation module 316, and a text-to-speech (TTS) (318).

According to one embodiment of the present invention, the communication module 302 is configured to allow the interactive AI agent server 106 to communicate with the user terminal 102 and / or via the communication network 104, in accordance with any wired or wireless communication protocol, Thereby enabling communication with the external service server 108. According to one embodiment of the present invention, the communication module 302 includes a user input (e.g., including touch input, voice input and / or text input, etc.) transmitted from the user terminal 102 via the communication network 104 And is not limited thereby). According to one embodiment of the present invention, the user input may include a signal associated with user authentication, e.g., user identification information. According to one embodiment of the present invention, the user input may include user identification information including an identifier of the user terminal 102, for example. According to one embodiment of the present invention, the user input may be a voice or text input signal of an answer to a question related to user authentication. According to one embodiment of the present invention, the user input may be a request signal for a particular task execution or conversation response.

In accordance with one embodiment of the present invention, communication module 302 is coupled to user terminal 102, which has been transmitted from user terminal 102 via communication network 104, with or without user input, Status information can be received. According to one embodiment of the present invention, the state information may include various state information (e.g., the physical state of the user terminal 102, the software of the user terminal 102) related to the user terminal 102 at the time of user input And / or hardware state, environmental state information around the user terminal 102, etc.). In accordance with one embodiment of the present invention, communication module 302 may also be configured to generate an interactive response (e. G., A native < / RTI > And / or control signals to the user terminal 102 via the communication network 104. The user terminal 102 may be connected to the user terminal 102 via the network 104,

According to one embodiment of the present invention, the STT module 304 may receive speech input from user input received via the communication module 302 and convert the received speech input into text data based on pattern matching and the like have. According to one embodiment of the present invention, the STT module 304 may extract a feature from a user's speech input to generate a feature vector sequence. According to an exemplary embodiment of the present invention, the STT module 304 may be implemented by a DTW (Dynamic Time Warping) method, an HMM model (Hidden Markov Model), a GMM model (Gaussian-Mixture Mode), a deep neural network model, For example, a sequence of words, based on various statistical models of the speech recognition results. According to one embodiment of the present invention, the STT module 304 can refer to each user characteristic data of the user database 310, which will be described later, when converting the received voice input into text data based on pattern matching .

According to one embodiment of the present invention, the NLU module 306 may receive text input from the communication module 302 or the STT module 304. The textual input received at the NLU module 306 may be transmitted to the user terminal 102 via the user text input or communication module 302 that has been received from the user terminal 102 via the communication network 104, For example, a sequence of words, generated by the STT module 304 from the user speech input received at the STT module 304. [ In accordance with one embodiment of the present invention, the NLU module 306 may include status information associated with the user input, such as with or after receipt of the text input, e.g., status information of the user terminal 102 at the time of the user input And the like. As described above, the status information may include various status information (e.g., the physical state of the user terminal 102, the software status of the user terminal 102) associated with the user terminal 102 at the time of user input and / And / or hardware state, environmental state information around the user terminal 102, etc.).

According to one embodiment of the present invention, the NLU module 306 may map the received text input to one or more user intents based on a dialog understanding knowledge base 308, which will be described later. Where the user intent can be associated with a series of operations (s) that can be understood and performed by the interactive AI agent server 106 according to the user intention. According to one embodiment of the present invention, the NLU module 306 may refer to the status information described above in associating the received text input with one or more user intentions. According to one embodiment of the present invention, the NLU module 306 may refer to each user characteristic data of the user database 310, which will be described later, in mapping the received text input to one or more user intentions.

According to one embodiment of the present invention, the conversation understanding knowledge base 308 may include, for example, a predefined ontology model. According to one embodiment of the present invention, an ontology model can be represented, for example, in a hierarchical structure between nodes, where each node is associated with an " intention " node corresponding to the user & Node (a sub-attribute node directly linked to an " intent " node or linked back to an " attribute " node of an " intent " node). According to one embodiment of the present invention, " attribute " nodes directly or indirectly linked to an " intention " node and its " intent " node may constitute one domain, and an ontology may be composed of such a set of domains . According to one embodiment of the present invention, the conversation understanding knowledge base 308 may be configured to include domains corresponding to all intents, for example, an interactive AI agent system that can understand and perform corresponding actions have. According to one embodiment of the present invention, it should be noted that the ontology model can be dynamically changed by addition or deletion of nodes or modification of relations between nodes.

According to one embodiment of the present invention, the intention nodes and attribute nodes of each domain in the ontology model may be associated with words and / or phrases associated with corresponding user intents or attributes, respectively. According to one embodiment of the present invention, the conversation understanding knowledge base 308 includes an ontology model, which is composed of a hierarchy of nodes and a set of words and / or phrases associated with each node, , And the NLU module 306 can determine the user's intention based on the ontology model implemented in the lexical dictionary form. For example, according to one embodiment of the present invention, the NLU module 306, upon receipt of a text input or a sequence of words, can determine which of the domains in the ontology model each word in the sequence is associated with, Based on such a determination, the corresponding domain, i.e. the user intent, can be determined.

According to an embodiment of the present invention, the user database 310 may be a database that stores and manages user-specific data including authentication data for each user. According to an embodiment of the present invention, the characteristic data for each user included in the user database 310 may include, for example, personal information of the user, previous conversation / behavior record, pronunciation characteristic information of the user, A user's location, a set language, a contact / friend list, and various other user-specific information. According to one embodiment of the present invention, the authentication data for each user included in the user database 310 may include one or more questions that can be used for security authentication of the user, one or more answers / RTI > < RTI ID = 0.0 > and / or < / RTI > According to an embodiment of the present invention, the authentication data of each user included in the user database 310 may be generated based on the user context. According to one embodiment of the present invention, the authentication data of each user included in the user database includes other information in the user database 310 related to the user, such as personal information of the user, previous conversation history (e.g., (E.g., various conversation records of the user possessed by the AI agent system) and / or a behavior history (such as purchase of goods, information retrieval, and various other service utilization histories) have. According to an embodiment of the present invention, the question / answer list of the user database 310 for user authentication may include other information in the user database 310 related to the user, for example, And may be predefined and stored based on conversation history and / or behavior history, but the present invention is not limited thereto. According to another embodiment of the present invention, after the user authentication procedure is started, a question / answer list for the user authentication may be generated immediately on the basis of user characteristic data in the user database 310 according to a predetermined criterion You should know.

In accordance with one embodiment of the present invention, as described above, the STT module 304 may be configured to refer to each user characteristic data of the user database 310, e.g., pronunciation characteristics for each user, , More accurate text data can be obtained. According to one embodiment of the present invention, the NLU module 306 determines each user characteristic data of the user database 310, for example, characteristics or contexts of each user, . According to one embodiment of the present invention, as described below, the dialog generation module 316 may refer to user characteristic data of the user database 310 at the time of generating the conversation response.

In this figure, a user database 310 for storing and managing characteristic data for each user is shown as being disposed in the interactive AI agent server 106, but the present invention is not limited thereto. According to another embodiment of the present invention, the user database 310, which stores and manages characteristic data for each user, may reside, for example, at the user terminal 102, and may include a user terminal 102 and an interactive AI agent server 106 As shown in FIG.

According to an embodiment of the present invention, the user authentication module 312 may perform an authentication procedure for a user before providing a predetermined service. According to an embodiment of the present invention, when a predetermined operation according to the intention of the user determined by the NLU module 306 requires user security authentication (for example, when a user requests a high security service A service using security information, or a service using user personal information), the user authentication module 312 may proceed with the user security authentication procedure. According to another embodiment of the present invention, the user authentication module 312 may receive a user security authentication request from the user terminal 102a-102n and proceed with the user security authentication procedure based thereon.

According to an embodiment of the present invention, the user authentication module 312 may acquire user identification information and perform a user authentication procedure based on the acquired user identification information. According to one embodiment of the present invention, the user authentication module 312 may receive a user voice input from the user terminal 102a-102n and obtain user identification information from the received user voice input. According to one embodiment of the present invention, the user authentication module 312 obtains, for example, a user identifier (user ID) and / or an identifier (terminal ID) of the user terminal from the user terminals 102a-102n, The user authentication process can be performed based on the information. In accordance with another embodiment of the present invention, it should be appreciated that the user authentication module 312 may obtain user identification information in a variety of other ways.

According to an embodiment of the present invention, the user authentication module 312 searches the user database 310 for authentication information related to the user, for example, a question / answer list for user authentication based on the acquired user identification information or the like . According to one embodiment of the present invention, the user authentication module 312 may provide the retrieved authentication information, for example, any question selected from the question / answer list for user authentication, in voice or text form during a conversation with the user, A response can be obtained from the user. According to one embodiment of the present invention, when an answer to the selected question is received from the user terminal 102a-102n, the user authentication module 312 determines whether the received answer is a question / answer For example, the answer received from the user may be compared with one or more predefined answers corresponding to the selected question on the above question / answer list, and whether the similarity between the two is higher than the threshold.

According to one embodiment of the present invention, the dialogue management module 314 may generate a series of operational flows corresponding to the user intent determined by the NLU module 306. [ In accordance with one embodiment of the present invention, the conversation management module 314 may perform certain actions based on a predetermined conversation flow management model, e.g., in response to the user's intent received from the NLU module 306, e.g., Or to perform a task execution, and to generate a corresponding detailed operation flow.

In accordance with one embodiment of the invention, the dialog generation module 316 may generate an interaction response to be provided to the user based on the conversation flow generated by the conversation management module 314. In accordance with one embodiment of the present invention, the dialog generation module 316 generates, in the generation of the dialog response, user characteristic data of the above-described user database 310 (e.g., the user's previous conversation history, A user's lexical preference, a user's location, a set language, a contact / friend list, a previous conversation record of the user for each user, etc.).

In accordance with one embodiment of the present invention, the TTS module 318 may receive an interactive response that is generated by the dialog generation module 316 to be transmitted to the user terminal 102. The conversation response received at the TTS module 318 may be a natural word or a sequence of words having a textual form. According to one embodiment of the present invention, the TTS module 316 can convert the input of the above received text form into speech form according to various types of algorithms.

In the embodiment of the present invention described above with reference to FIGS. 1 to 3, the interactive AI agent system is a client-server model between the user terminal 102 and the interactive AI agent server 106, And is based on a so-called " thin client-server model ", which delegates all other functions of the interactive AI agent system to the server, but the present invention is not limited thereto. According to another embodiment of the present invention, it should be understood that the interactive AI agent system may be implemented as a distributed application between the user terminal and the server, or as a stand-alone application installed on the user terminal . In addition, when the interactive AI agent system implements the functions of the interactive AI agent system distributed between the user terminal and the server according to an embodiment of the present invention, the distribution of each function of the interactive AI agent system between the client and the server is It should be understood that the invention may be otherwise embodied. In addition, although in the embodiments of the present invention described above with reference to FIGS. 1 to 3, the specific module has been described as performing certain operations for convenience, the present invention is not limited thereto. According to another embodiment of the present invention, it is to be understood that the operations described as being performed by any particular module in the above description may be performed by separate and distinct modules, respectively.

4 is a flow diagram illustrating an exemplary operational flow for user security authentication performed by an interactive AI agent system, in accordance with an embodiment of the present invention.

In step 402, the interactive AI agent system may obtain user identification information. According to one embodiment of the present invention, the user identification information may be obtained, for example, from user input of a predetermined word or sentence registered in advance for user authentication. According to one embodiment of the present invention, the user identification information may be obtained, for example, from a voice or text input of a user identifier (user ID). According to another embodiment of the present invention, the user identification information may be obtained, for example, from a voice or text input of a word or sentence randomly selected by the user. According to one embodiment of the present invention, the interactive AI agent system can be obtained from an identifier (terminal ID) of the user terminal. According to an embodiment of the present invention, the user identification information can be obtained from a combination of the user input and the identifier of the user terminal.

At step 404, the interactive AI agent system receives, from the user database 310, authentication data regarding the user, e.g., a predetermined number of user IDs for use in user security authentication, based on the user identification information obtained at step 402 You can search the question / answer list. According to an embodiment of the present invention, the authentication data of each user included in the user database 310 may be generated based on the user context as described above. According to one embodiment of the present invention, the predetermined question / answer list that may be included in the user database 310 for each user's security authentication may include other information in the user database 310 for that user, (E.g., user's personal information, friend information, etc.), previous conversation history (e.g., various conversation records of the user held by the interactive AI agent system, etc.) and / or behavior history (S) generated based on the information extracted from the purchase history, purchase history of goods, information retrieval, various other service usage history, etc.) and the answer (s) corresponding thereto in semantics.

According to one embodiment of the present invention, the interactive AI agent system is configured to collect information about the user in accordance with a predetermined criterion during a conversation with the user, and to generate a question based on the information and a corresponding answer May be generated and stored in the user database 310 as data for user security authentication. According to one embodiment of the present invention, the predetermined criteria may include, for example, information displayed during a user conversation includes information about the user's family or intimate person (e.g., family name, friend name, (E.g., birthday, anniversary, family birthday, friend's birthday, other noteworthy dates, or any unusual events associated with them) associated with the user, product purchase information of the user (For example, favorite season, favorite color, etc.), and the like, but the present invention is not limited to this. It is not. According to one embodiment of the present invention, the interactive AI agent system is configured to receive, from a history of previous conversation / behavior with a user, various arbitrary criteria relating to information expected to be stored by the user as information specific to the user Specific information related to the user that has been repeatedly inputted over a predetermined number of times from the user's previous conversation / behavior history, etc.), extracts information that meets the criteria, And corresponding responses.

According to an embodiment of the present invention, the interactive AI agent system may be configured to transmit data for user security authentication, for example, a question / answer list generated based on a user context, The user can be notified in advance that the question can be used for user authentication (but the present invention is not limited thereto). According to one embodiment of the present invention, when a question is generated as data for user security authentication based on information about a user, one or more answers (or answer patterns) And may be automatically generated based on user characteristic data, e.g., information from previous conversation / behavior history, and the like.

According to one embodiment of the invention, the interactive AI agent system employs a question corresponding to the information obtained in the user context from the user database as a question which can be used, for example, for user security authentication, You can choose positive answers as answers. For example, if there is a record of a user's recent performance of a refrigerator that he / she likes, he / she will be able to answer questions such as "New refrigerator likes" and corresponding "Yes", "Very good", " And a positive answer. In accordance with another embodiment of the present invention, the interactive AI agent system employs, as a question that can be used, for example, for user security authentication, to adopt a query that is contrary to the information obtained in the user context from the user database, You can choose negative answers as answers. For example, if the user's name of 'cat' acquires the information 'Mong Mong Lee', the user authentication data is as follows: "Is it a dog name Mong Mong?" And corresponding "No", "Mong Mong is not a dog but my cat" "Or based on the information that the birthday of the user is October 10, the question" Did you send your birthday well on November 11? "And the corresponding" No "," That day is my birthday , "And" my birthday is October 10th. "(It should be noted that the above-mentioned examples are merely illustrative purposes for facilitating understanding of the invention, It is never a thing).

At step 406, the interactive AI agent system may arbitrarily select one of the question / answer lists retrieved from the user database 310 at step 404 and provide the selected question to the user. Then, at step 408, the interactive AI agent system may receive a response from the user for the provided question. According to one embodiment of the present invention, the interactive AI agent system can receive voice and / or text responses input from the user via the user terminal.

Then, at step 410, the interactive AI agent system may determine whether the answer received from the user matches one or more answers (patterns) registered in response to the above provided question. According to one embodiment of the present invention, for example, the interactive AI agent system determines whether the answer received from the user corresponds to a meaning registered in response to the question (for example, whether the answer is positive or negative) . According to an embodiment of the present invention, for example, the interactive AI agent system can determine whether the degree of similarity between the answer received from the user and one or more answers registered corresponding to the query is equal to or greater than a threshold value. According to one embodiment of the present invention, an interactive AI agent system, for example, analyzes an intention of a response received from a user by natural language analysis, and analyzes the intention of the answer received from the user, Or similar can be determined.

In step 410, if it is determined that the received answer corresponds to the registered answer in response to the above provided question, then the procedure proceeds to step 412, where the interactive AI agent system receives the response from the user terminal (e.g., Smart speaker, etc.) to the user in voice or text form. If it is determined in step 410 that the received answer does not match the registered answer in response to the provided question, the process proceeds to step 414 where an output indicating the user authentication failure is provided to the user in voice or text form .

According to an embodiment of the present invention, the interactive AI agent system performs the security authentication process from step 406 to step 410 a plurality of times, and if the authentication succeeds successively for a predetermined number of times or more, And proceed with the procedure. According to an embodiment of the present invention, the interactive AI agent system performs the security authentication process from step 406 to step 410 a plurality of times, and when the authentication fails for a predetermined number of times or more, it is determined that the user authentication fails can do.

As will be appreciated by those skilled in the art, the present invention is not limited to the examples described herein, but can be variously modified, rearranged, and replaced without departing from the scope of the present invention. It should be understood that the various techniques described herein may be implemented in hardware or software, or a combination of hardware and software.

A computer program according to an embodiment of the present invention may be stored in a storage medium readable by a computer processor or the like such as a nonvolatile memory such as EPROM, EEPROM, flash memory device, a magnetic disk such as an internal hard disk and a removable disk, CDROM disks, and the like. Also, the program code (s) may be implemented in assembly language or machine language. And all changes and modifications that fall within the true spirit and scope of the present invention are intended to be embraced by the following claims.

Claims

A user authentication method performed by an interactive AI agent system,

Obtaining user identification information;

The method comprising: retrieving user authentication data from a user database based on the user identification information, the user database including characteristic data of each user; A query / answer list comprising one or more questions generated based on characteristic data and one or more answers semantically associated with each of the questions;

Selecting one of the searched question / answer lists and providing the same to a user terminal;

Receiving an answer to the provided question from the user terminal; And

Performing a user authentication based on the received answer

And a user authentication method.
The method according to claim 1,

Wherein the characteristic data for each user includes at least one of the user's personal information, the user's previous conversation record, and the user's previous behavior record, wherein the question / The one or more questions generated based on at least one of the user's personal information, the user's previous conversation history, and the user's previous behavior record, and one or more answers semantically associated with each of the questions.
The method according to claim 1,

Wherein the performing the user authentication comprises:

And determining if the received answer matches the one or more answers semantically associated with the provided question on the question / answer list.
The method of claim 3,

Wherein the step of determining whether the received answer matches the one or more answers semantically associated with the provided question on the question /

Comparing the received answer with each of the one or more answers semantically associated with the provided question on the question / answer list, respectively, to calculate a degree of similarity between the received answer and each of the one or more answers; And

Determining whether the user is authenticated based on the calculated similarity;

And a user authentication method.
The method according to claim 1,

Wherein the behavior history of the user includes at least one of a purchase history of the user, an information retrieval history, and a service usage history of the user.
A computer-readable medium having stored thereon one or more instructions,

Wherein the one or more instructions cause the computer to perform the method of any one of claims 1 to 5 when executed on a computer.
An interactive AI agent system configured to provide user authentication,

A user database comprising user authentication data, the user database comprising characteristic data of each user, wherein the user authentication data comprises one or more questions generated based on the characteristic data of each user included in the user database And a question / answer list containing one or more answers semantically associated with each of the questions; And

A user authentication module,

Wherein the user authentication module comprises:

Acquiring user identification information,

Retrieving the question / answer list from the user database based on the user identification information,

Selects one of the searched question / answer lists and provides the same to the user terminal,

Receiving an answer to the provided question from the user terminal,

And configured to perform user authentication based on the received answer,

Interactive AI agent system.