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arXiv · 2104.03848

Exploring the Relationship Between Algorithm Performance, Vocabulary, and Run-Time in Text Classification

Wilson Fearn·Orion Weller·Kevin Seppi
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Abstract

Text classification is a significant branch of natural language processing, and has many applications including document classification and sentiment analysis. Unsurprisingly, those who do text classification are concerned with the run-time of their algorithms, many of which depend on the size of the corpus' vocabulary due to their bag-of-words representation. Although many studies have examined the effect of preprocessing techniques on vocabulary size and accuracy, none have examined how these methods affect a model's run-time. To fill this gap, we provide a comprehensive study that examines how preprocessing techniques affect the vocabulary size, model performance, and model run-time, evaluating ten techniques over four models and two datasets. We show that some individual methods can reduce run-time with no loss of accuracy, while some combinations of methods can trade 2-5% of the accuracy for up to a 65% reduction of run-time. Furthermore, some combinations of preprocessing techniques can even provide a 15% reduction in run-time while simultaneously improving model accuracy.

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Wilson Fearn, Orion Weller, Kevin Seppi. 2021-04-08. Exploring the Relationship Between Algorithm Performance, Vocabulary, and Run-Time in Text Classification. https://arxiv.org/abs/2104.03848

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