Papers › Enhancing biomedical word embeddings by retrofitting to verb clusters
Enhancing biomedical word embeddings by retrofitting to verb clusters
Billy Chiu, Simon Baker, Martha Palmer, Anna Korhonen
Verbs play a fundamental role in many biomed-ical tasks and applications such as relation and event extraction. We hypothesize that performance on many downstream tasks can be improved by aligning the input pretrained embeddings according to semantic verb classes.In this work, we show that by using semantic clusters for verbs, a large lexicon of verbclasses derived from biomedical literature, weare able to improve the performance of common pretrained embeddings in downstream tasks by retrofitting them to verb classes. We present a simple and computationally efficient approach using a widely-available {``}off-the-shelf{''} retrofitting algorithm to align pretrained embeddings according to semantic verb clusters. We achieve state-of-the-art results on text classification and relation extraction tasks.
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