Search Results for author: Linhan Zhang

Found 5 papers, 3 papers with code

Exploiting Correlations Between Contexts and Definitions with Multiple Definition Modeling

no code implementations24 May 2023 Linhan Zhang, Qian Chen, Wen Wang, Yuxin Jiang, Bing Li, Wei Wang, Xin Cao

In this paper, we carefully design a new task called Multiple Definition Modeling (MDM) that pool together all contexts and definition of target words.

Weighted Sampling for Masked Language Modeling

no code implementations28 Feb 2023 Linhan Zhang, Qian Chen, Wen Wang, Chong Deng, Xin Cao, Kongzhang Hao, Yuxin Jiang, Wei Wang

Experiments on the Semantic Textual Similarity benchmark (STS) show that WSBERT significantly improves sentence embeddings over BERT.

Language Modelling Masked Language Modeling +5

Global and Local Hierarchy-aware Contrastive Framework for Implicit Discourse Relation Recognition

1 code implementation25 Nov 2022 Yuxin Jiang, Linhan Zhang, Wei Wang

Due to the absence of explicit connectives, implicit discourse relation recognition (IDRR) remains a challenging task in discourse analysis.

Contrastive Learning Multi-Task Learning +1

Improved Universal Sentence Embeddings with Prompt-based Contrastive Learning and Energy-based Learning

1 code implementation14 Mar 2022 Yuxin Jiang, Linhan Zhang, Wei Wang

To this end, we propose to integrate an Energy-based Hinge loss to enhance the pairwise discriminative power, inspired by the connection between the NT-Xent loss and the Energy-based Learning paradigm.

Attribute Contrastive Learning +3

MDERank: A Masked Document Embedding Rank Approach for Unsupervised Keyphrase Extraction

1 code implementation Findings (ACL) 2022 Linhan Zhang, Qian Chen, Wen Wang, Chong Deng, Shiliang Zhang, Bing Li, Wei Wang, Xin Cao

In this work, we propose a novel unsupervised embedding-based KPE approach, Masked Document Embedding Rank (MDERank), to address this problem by leveraging a mask strategy and ranking candidates by the similarity between embeddings of the source document and the masked document.

Contrastive Learning Document Embedding +4

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