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Ad click prediction: a view from the trenches

Published: 11 August 2013 Publication History

Abstract

Predicting ad click-through rates (CTR) is a massive-scale learning problem that is central to the multi-billion dollar online advertising industry. We present a selection of case studies and topics drawn from recent experiments in the setting of a deployed CTR prediction system. These include improvements in the context of traditional supervised learning based on an FTRL-Proximal online learning algorithm (which has excellent sparsity and convergence properties) and the use of per-coordinate learning rates.
We also explore some of the challenges that arise in a real-world system that may appear at first to be outside the domain of traditional machine learning research. These include useful tricks for memory savings, methods for assessing and visualizing performance, practical methods for providing confidence estimates for predicted probabilities, calibration methods, and methods for automated management of features. Finally, we also detail several directions that did not turn out to be beneficial for us, despite promising results elsewhere in the literature. The goal of this paper is to highlight the close relationship between theoretical advances and practical engineering in this industrial setting, and to show the depth of challenges that appear when applying traditional machine learning methods in a complex dynamic system.

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    cover image ACM Conferences
    KDD '13: Proceedings of the 19th ACM SIGKDD international conference on Knowledge discovery and data mining
    August 2013
    1534 pages
    ISBN:9781450321747
    DOI:10.1145/2487575
    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 the author(s) 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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    Publication History

    Published: 11 August 2013

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    Author Tags

    1. data mining
    2. large-scale learning
    3. online advertising

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    KDD '13 Paper Acceptance Rate 125 of 726 submissions, 17%;
    Overall Acceptance Rate 1,133 of 8,635 submissions, 13%

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    • (2024)Auto-Bidding and Auctions in Online Advertising: A SurveyACM SIGecom Exchanges10.1145/3699824.369983822:1(159-183)Online publication date: 1-Jun-2024
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