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Technical Report: Impact of Position Bias on Language Models in Token Classification
April 9, 2024, 4:51 a.m. | Mehdi Ben Amor, Michael Granitzer, Jelena Mitrovi\'c
cs.CL updates on arXiv.org arxiv.org
Abstract: Language Models (LMs) have shown state-of-the-art performance in Natural Language Processing (NLP) tasks. Downstream tasks such as Named Entity Recognition (NER) or Part-of-Speech (POS) tagging are known to suffer from data imbalance issues, particularly regarding the ratio of positive to negative examples and class disparities. This paper investigates an often-overlooked issue of encoder models, specifically the position bias of positive examples in token classification tasks. For completeness, we also include decoders in the evaluation. We …
abstract art arxiv bias classification cs.ai cs.cl data examples impact language language models language processing lms natural natural language natural language processing negative ner nlp part part-of-speech performance positive processing recognition report speech state tagging tasks technical token type
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