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ParsTwiNER: A Corpus for Named Entity Recognition at Informal Persian

Parstwiner: كوربوس للتعرف على الكيان المسمى في الفارسية غير الرسمية

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 Publication date 2021
and research's language is English
 Created by Shamra Editor




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As a result of unstructured sentences and some misspellings and errors, finding named entities in a noisy environment such as social media takes much more effort. ParsTwiNER contains about 250k tokens, based on standard instructions like MUC-6 or CoNLL 2003, gathered from Persian Twitter. Using Cohen's Kappa coefficient, the consistency of annotators is 0.95, a high score. In this study, we demonstrate that some state-of-the-art models degrade on these corpora, and trained a new model using parallel transfer learning based on the BERT architecture. Experimental results show that the model works well in informal Persian as well as in formal Persian.

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