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Zequn Liu

6 accepted papers

2025

ExLM: Rethinking the Impact of $\texttt{[MASK]}$ Tokens in Masked Language Models

ICML 2025poster

Masked Language Models (MLMs) have achieved remarkable success in many self-supervised representation learning tasks. MLMs are trained by randomly masking portions of the input sequences with $\texttt{[MASK]}$ tokens and learning to reconstruct the original content based on the remaining context. Th…

Cited by 0SourcePDFScholar
2025

SMI-Editor: Edit-based SMILES Language Model with Fragment-level Supervision

ICLR 2025poster

SMILES, a crucial textual representation of molecular structures, has garnered significant attention as a foundation for pre-trained language models (LMs). However, most existing pre-trained SMILES LMs focus solely on the single-token level supervision during pre-training, failing to fully leverage…

Cited by 1SourcePDFScholar
2023

MolXPT: Wrapping Molecules with Text for Generative Pre-training

ACL 2023short

Generative pre-trained Transformer (GPT) has demonstrates its great success in natural language processing and related techniques have been adapted into molecular modeling. Considering that text is the most important record for scientific discovery, in this paper, we propose MolXPT, a unified langua…

2022

MetaFill: Text Infilling for Meta-Path Generation on Heterogeneous Information Networks

EMNLP 2022main

Heterogeneous information network (HIN) is essential to study complicated networks containing multiple edge types and node types. Meta-path, a sequence of node types and edge types, is the core technique to embed HINs. Since manually curating meta-paths is time-consuming, there is a pressing need to…

2022

Pathway2Text: Dataset and Method for Biomedical Pathway Description Generation

NAACL 2022findings

Biomedical pathways have been extensively used to characterize the mechanism of complex diseases. One essential step in biomedical pathway analysis is to curate the description of a pathway based on its graph structure and node features. Neural text generation could be a plausible technique to circu…

2021

Graphine: A Dataset for Graph-aware Terminology Definition Generation

EMNLP 2021main

Precisely defining the terminology is the first step in scientific communication. Developing neural text generation models for definition generation can circumvent the labor-intensity curation, further accelerating scientific discovery. Unfortunately, the lack of large-scale terminology definition d…