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Unsupervised Deep Language and Dialect Identification for Short Texts

Authors: Koustava Goswami; Rajdeep Sarkar; Bharathi Raja Chakravarthi; Theodorus Fransen; John P. McCrae;

Unsupervised Deep Language and Dialect Identification for Short Texts

Abstract

Automatic Language Identification (LI) or Dialect Identification (DI) of short texts of closely related languages or dialects, is one of the primary steps in many natural language processing pipelines. Language identification is considered a solved task in many cases; however, in the case of very closely related languages, or in an unsupervised scenario (where the languages are not known in advance), performance is still poor. In this paper, we propose the Unsupervised Deep Language and Dialect Identification (UDLDI) method, which can simultaneously learn sentence embeddings and cluster assignments from short texts. The UDLDI model understands the sentence constructions of languages by applying attention to character relations which helps to optimize the clustering of languages. We have performed our experiments on three short-text datasets for different language families, each consisting of closely related languages or dialects, with very minimal training sets. Our experimental evaluations on these datasets have shown significant improvement over state-of-the-art unsupervised methods and our model has outperformed state-of-the-art LI and DI systems in supervised settings. This publication has emanated from research in part supported by the Irish Research Council under grant number IRCLA/2017/129 (CARDAMOM-Comparative Deep Models of Language for Minority and Historical Languages). It is co-funded by Science Foundation Ireland (SFI) under Grant Number SFI/12/RC/2289 P2 (Insight 2) and Irish Research Council under project ID GOIPG/2019/3480. We would like to thank Ms. Omnia Zayed and Ms. Priya Rani for their valuable comments and suggestions towards improving our paper. We would also like to thank the anonymous reviewers for their insights on this work. non-peer-reviewed

Country
Ireland
Subjects by Vocabulary

Microsoft Academic Graph classification: Language identification Character (computing) Computer science business.industry computer.software_genre Task (project management) Identification (information) Artificial intelligence Cluster analysis business computer Natural language processing Sentence

Keywords

Dialect Identification (DI), Dialect Identification, Automatic Language Identification (LI), Short Texts, Deep Language, natural language processing

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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