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Knowledge Based Short Text Categorization Using Entity and Category Embeddings

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Knowledge Based Short Text Categorization Using Entity and Category Embeddings

Published: 2019 Juni


Short text categorization is an important task due to therapid growth of online available short texts in various domains such asweb search snippets, etc. Most of the traditional methods suffer fromsparsity and shortness of the text. Moreover, supervised learning meth-ods require a significant amount of training data and manually labelingsuch data can be very time-consuming and costly. In this study, we pro-pose a novel probabilistic model for Knowledge-Based Short Text Cat-egorization (KBSTC), which does not require any labeled training datato classify a short text. This is achieved by leveraging entities and cat-egories from large knowledge bases, which are further embedded into acommon vector space, for which we propose a new entity and categoryembedding model. Given a short text, its category (e.g.Business,Sports,etc.) can then be derived based on the entities mentioned in the text byexploiting semantic similarity between entities and categories. To vali-date the effectiveness of the proposed method, we conducted experimentson two real-world datasets, i.e., AG News and Google Snippets. The ex-perimental results show that our approach significantly outperforms theclassification approaches which do not require any labeled data, while itcomes close to the results of the supervised approaches. Keywords:Short Text Classification, Dataless Text Classification, Net-work Embeddings

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Information Service Engineering