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Hits 1 – 5 of 5
1
Specializing Unsupervised Pretraining Models for Word-Level Semantic Similarity ...
Lauscher, Anne
;
Vulic, Ivan
;
Ponti, Edoardo
;
Korhonen, Anna
;
Glavas, Goran
. - : Apollo - University of Cambridge Repository, 2020
Abstract:
Unsupervised pretraining models have been shown to facilitate a wide range of downstream NLP applications. These models, however, retain some of the limitations of traditional static word embeddings. In particular, they encode only the distributional knowledge available in raw text corpora, incorporated through language modeling objectives. In this work, we complement such distributional knowledge with external lexical knowledge, that is, we integrate the discrete knowledge on word-level semantic similarity into pretraining. To this end, we generalize the standard BERT model to a multi-task learning setting where we couple BERT’s masked language modeling and next sentence prediction objectives with an auxiliary task of binary word relation classification. Our experiments suggest that our "Lexically Informed” BERT (LIBERT), specialized for the word-level semantic similarity, yields better performance than the lexically blind “vanilla” BERT on several language understanding tasks. Concretely, LIBERT ...
URL:
https://www.repository.cam.ac.uk/handle/1810/315112
https://dx.doi.org/10.17863/cam.62219
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2
Probing Pretrained Language Models for Lexical Semantics ...
Vulic, Ivan
;
Ponti, Edoardo
;
Litschko, Robert
. - : Apollo - University of Cambridge Repository, 2020
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3
Specializing Unsupervised Pretraining Models for Word-Level Semantic Similarity
Lauscher, Anne
;
Vulic, Ivan
;
Ponti, Edoardo
. - : International Committee on Computational Linguistics, 2020. : https://www.aclweb.org/anthology/2020.coling-main.118, 2020. : Proceedings of the 28th International Conference on Computational Linguistics (COLING 2020), 2020
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4
Probing Pretrained Language Models for Lexical Semantics
Vulic, Ivan
;
Ponti, Edoardo
;
Litschko, Robert
. - : Association for Computational Linguistics, 2020. : Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2020), 2020
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5
Specialising Distributional Vectors of All Words for Lexical Entailment ...
Kamath, Aishwarya
;
Pfeiffer, Jonas
;
Ponti, Edoardo
. - : Apollo - University of Cambridge Repository, 2019
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