Modeling Personalized Email Prioritization: Classification-based and Regression-based Approaches

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Email overload, even after spam filtering, presents a serious productivity challenge for busy professionals and executives. One solution is automated prioritization of incoming emails to ensure the most important are read and processed quickly, while others are processed later as/if time permits in declining priority levels. This paper presents a study of machine learning approaches to email prioritization into discrete levels, comparing ordinal regression versus classier cascades. Given the ordinal nature of discrete email priority levels, SVM ordinal regression would be expected to perform well, but surprisingly a cascade of SVM classifiers significantly outperforms ordinal regression for email prioritization. In ... continued below

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S., Yoo; Yang, Y. & Carbonell, J. October 24, 2011.

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Email overload, even after spam filtering, presents a serious productivity challenge for busy professionals and executives. One solution is automated prioritization of incoming emails to ensure the most important are read and processed quickly, while others are processed later as/if time permits in declining priority levels. This paper presents a study of machine learning approaches to email prioritization into discrete levels, comparing ordinal regression versus classier cascades. Given the ordinal nature of discrete email priority levels, SVM ordinal regression would be expected to perform well, but surprisingly a cascade of SVM classifiers significantly outperforms ordinal regression for email prioritization. In contrast, SVM regression performs well -- better than classifiers -- on selected UCI data sets. This unexpected performance inversion is analyzed and results are presented, providing core functionality for email prioritization systems.

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  • CIKM"ll; Glasgow, Scotland; 20111024 through 20111028

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  • Report No.: BNL--96305-2011-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 1049211
  • Archival Resource Key: ark:/67531/metadc835677

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  • October 24, 2011

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  • May 19, 2016, 9:45 a.m.

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  • July 21, 2016, 8:03 p.m.

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S., Yoo; Yang, Y. & Carbonell, J. Modeling Personalized Email Prioritization: Classification-based and Regression-based Approaches, article, October 24, 2011; United States. (digital.library.unt.edu/ark:/67531/metadc835677/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.