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On updates that constrain the features' connections during learning

Published: 24 August 2008 Publication History

Abstract

In many multiclass learning scenarios, the number of classes is relatively large (thousands,...), or the space and time efficiency of the learning system can be crucial. We investigate two online update techniques especially suited to such problems. These updates share a sparsity preservation capacity: they allow for constraining the number of prediction connections that each feature can make. We show that one method, exponential moving average, is solving a "discrete" regression problem for each feature, changing the weights in the direction of minimizing the quadratic loss. We design the other method to improve a hinge loss subject to constraints, for better accuracy. We empirically explore the methods, and compare performance to previous indexing techniques, developed with the same goals, as well as other online algorithms based on prototype learning. We observe that while the classification accuracies are very promising, improving over previous indexing techniques, the scalability benefits are preserved.

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  • (2014)A Meta-Top-Down Method for Large-Scale Hierarchical ClassificationIEEE Transactions on Knowledge and Data Engineering10.1109/TKDE.2013.3026:3(500-513)Online publication date: 1-Mar-2014
  • (2010)Enhancing cross document coreference of web documents with context similarity and very large scale text categorizationProceedings of the 23rd International Conference on Computational Linguistics10.5555/1873781.1873836(483-491)Online publication date: 23-Aug-2010
  • (2010)The ECIR 2010 large scale hierarchical classification workshopACM SIGIR Forum10.1145/1842890.184289444:1(23-32)Online publication date: 18-Aug-2010
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    cover image ACM Conferences
    KDD '08: Proceedings of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining
    August 2008
    1116 pages
    ISBN:9781605581934
    DOI:10.1145/1401890
    • General Chair:
    • Ying Li,
    • Program Chairs:
    • Bing Liu,
    • Sunita Sarawagi
    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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    Published: 24 August 2008

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    Author Tags

    1. index learning
    2. many-class learning
    3. multiclass learning
    4. online learning
    5. text categorization

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    KDD '08 Paper Acceptance Rate 118 of 593 submissions, 20%;
    Overall Acceptance Rate 1,133 of 8,635 submissions, 13%

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    Cited By

    View all
    • (2014)A Meta-Top-Down Method for Large-Scale Hierarchical ClassificationIEEE Transactions on Knowledge and Data Engineering10.1109/TKDE.2013.3026:3(500-513)Online publication date: 1-Mar-2014
    • (2010)Enhancing cross document coreference of web documents with context similarity and very large scale text categorizationProceedings of the 23rd International Conference on Computational Linguistics10.5555/1873781.1873836(483-491)Online publication date: 23-Aug-2010
    • (2010)The ECIR 2010 large scale hierarchical classification workshopACM SIGIR Forum10.1145/1842890.184289444:1(23-32)Online publication date: 18-Aug-2010
    • (2009)Efficient online learning and prediction of users' desktop actionsProceedings of the 21st International Joint Conference on Artificial Intelligence10.5555/1661445.1661679(1457-1462)Online publication date: 11-Jul-2009
    • (2009)Learning When Concepts AboundThe Journal of Machine Learning Research10.5555/1577069.175587210(2571-2613)Online publication date: 1-Dec-2009
    • (2008)Error-driven generalist+experts (edge)Proceedings of the 17th ACM conference on Information and knowledge management10.1145/1458082.1458097(83-92)Online publication date: 26-Oct-2008

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