Towards robust word embeddings for noisy texts
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/1910
EDITED VERSION: https://www.mdpi.com/2076-3417/10/19/6893
UNESCO SUBJECT: 1203.17 Informática ; 1203.23 Lenguajes de Programación ; 5701.04 Lingüística Informatizada
DOCUMENT TYPE: article
Research on word embeddings has mainly focused on improving their performance on standard corpora, disregarding the difficulties posed by noisy texts in the form of tweets and other types of non-standard writing from social media. In this work, we propose a simple extension to the skipgram model in which we introduce the concept of bridge-words, which are artificial words added to the model to strengthen the similarity between standard words and their noisy variants. Our new embeddings outperform baseline models on noisy texts on a wide range of evaluation tasks, both intrinsic and extrinsic, while retaining a good performance on standard texts. To the best of our knowledge, this is the first explicit approach at dealing with these types of noisy texts at the word embedding level that goes beyond the support for out-of-vocabulary words.
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