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Exploiting Geo-Spatial Preference for Personalized Expert Recommendation

Published: 16 September 2015 Publication History

Abstract

Experts are important for providing reliable and authoritative information and opinion, as well as for improving online reviews and services. While considerable previous research has focused on finding topical experts with broad appeal -- e.g., top Java developers, best lawyers in Texas -- we tackle the problem of personalized expert recommendation, to identify experts who have special personal appeal and importance to users. One of the key insights motivating our approach is to leverage the geo-spatial preferences of users and the variation of these preferences across different regions, topics, and social communities. Through a fine-grained GPS-tagged social media trace, we characterize these geo-spatial preferences for personalized experts, and integrate these preferences into a matrix factorization-based personalized expert recommender. Through extensive experiments, we find that the proposed approach can improve the quality of recommendation by 24% in precision compared to several baselines. We also find that users' geo-spatial preference of expertise and their underlying social communities can ameliorate the cold start problem by more than 20% in precision and recall.

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Cited By

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  • (2024)A dynamic preference recommendation model based on spatiotemporal knowledge graphsComplex & Intelligent Systems10.1007/s40747-024-01658-y11:1Online publication date: 18-Nov-2024
  • (2023)Deep Contextual Grid Triplet Network for Context-Aware RecommendationIEEE Access10.1109/ACCESS.2023.331047011(97522-97537)Online publication date: 2023
  • (2019)Weighted sequence loss based recurrent model for repurchase recommendationIOP Conference Series: Materials Science and Engineering10.1088/1757-899X/490/6/062062490(062062)Online publication date: 15-Apr-2019
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    cover image ACM Conferences
    RecSys '15: Proceedings of the 9th ACM Conference on Recommender Systems
    September 2015
    414 pages
    ISBN:9781450336925
    DOI:10.1145/2792838
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    New York, NY, United States

    Publication History

    Published: 16 September 2015

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    Author Tags

    1. GPS-tagged social media
    2. expert recommendation
    3. geospatial preference

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    • Research-article

    Funding Sources

    • NSF
    • Google Research Award

    Conference

    RecSys '15
    Sponsor:
    RecSys '15: Ninth ACM Conference on Recommender Systems
    September 16 - 20, 2015
    Vienna, Austria

    Acceptance Rates

    RecSys '15 Paper Acceptance Rate 28 of 131 submissions, 21%;
    Overall Acceptance Rate 254 of 1,295 submissions, 20%

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    Cited By

    View all
    • (2024)A dynamic preference recommendation model based on spatiotemporal knowledge graphsComplex & Intelligent Systems10.1007/s40747-024-01658-y11:1Online publication date: 18-Nov-2024
    • (2023)Deep Contextual Grid Triplet Network for Context-Aware RecommendationIEEE Access10.1109/ACCESS.2023.331047011(97522-97537)Online publication date: 2023
    • (2019)Weighted sequence loss based recurrent model for repurchase recommendationIOP Conference Series: Materials Science and Engineering10.1088/1757-899X/490/6/062062490(062062)Online publication date: 15-Apr-2019
    • (2019)Local experts finding using user comments in location‐based social networksTransactions on Emerging Telecommunications Technologies10.1002/ett.360030:9Online publication date: 12-Sep-2019
    • (2018)Click-through prediction when searching local businessesProceedings of the 5th Spanish Conference on Information Retrieval10.1145/3230599.3230609(1-2)Online publication date: 26-Jun-2018
    • (2018)Learning Geo-Social User Topical Profiles with Bayesian Hierarchical User FactorizationThe 41st International ACM SIGIR Conference on Research & Development in Information Retrieval10.1145/3209978.3210044(205-214)Online publication date: 27-Jun-2018
    • (2018)Latent CrossProceedings of the Eleventh ACM International Conference on Web Search and Data Mining10.1145/3159652.3159727(46-54)Online publication date: 2-Feb-2018
    • (2018)Characterizing and Predicting Users’ Behavior on Local Search QueriesACM Transactions on the Web10.1145/315705912:2(1-32)Online publication date: 27-May-2018
    • (2018)Twitter user geolocation by filtering of highly mentioned usersJournal of the Association for Information Science and Technology10.1002/asi.2401169:7(879-889)Online publication date: 22-Feb-2018
    • (2017)Click Through Rate Prediction for Local Search ResultsProceedings of the Tenth ACM International Conference on Web Search and Data Mining10.1145/3018661.3018683(171-180)Online publication date: 2-Feb-2017
    • Show More Cited By

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