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Cited by 358

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A study of thresholding strategies for text categorization

Yang, Yiming·2001·Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval

Abstract

Thresholding strategies in automated text categorization are an underexplored area of research. This paper presents an examination of the effect of thresholding strategies on the performance of a classifier under various conditions. Using k-Nearest Neighbor (kNN) as the classifier and five evaluation benchmark collections as the testbets, three common thresholding methods were investigated, including rank-based thresholding (RCut), proportion-based assignments (PCut) and score-based local optimization (SCut); in addition, new variants of these methods are proposed to overcome significant problems in the existing approaches. Experimental results show that the choice of thresholding strategy can significantly influence the performance of kNN, and that the ``optimal'' strategy may vary by application. SCut is potentially better for fine-tuning but risks overfitting. PCut copes better with rare categories and exhibits a smoother trade-off in recall versus precision, but is not suitable for online decision making. RCut is most natural for online response but is too coarse-grained for global or local optimization. RTCut, a new method combining the strength of category ranking and scoring, outperforms both PCut and RCut significantly.

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Metadata

Authors
Yang, Y.
Venue
Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval
Publisher
ACM
Published
2001-09
Pages
137-145
OpenAlex
W1979495886
Cited by
358
References
12
FWCI
13.18
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: A study of thresholding strategies for text categorization. https://app.cochat.ai/papers/10.1145/383952.383975
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Yang, Y. (2001). A study of thresholding strategies for text categorization. Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval. https://doi.org/10.1145/383952.383975

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