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Bohong Wu

6 accepted papers

2024

Seeing the Image: Prioritizing Visual Correlation by Contrastive Alignment

NeurIPS 2024poster

Existing image-text modality alignment in Vision Language Models (VLMs) treats each text token equally in an autoregressive manner. Despite being simple and effective, this method results in sub-optimal cross-modal alignment by over-emphasizing the text tokens that are less correlated with or even c…

2024

World to Code: Multi-modal Data Generation via Self-Instructed Compositional Captioning and Filtering

EMNLP 2024main

Recent advances in Vision-Language Models (VLMs) and the scarcity of high-quality multi-modal alignment data have inspired numerous researches on synthetic VLM data generation. The conventional norm in VLM data construction uses a mixture of specialists in caption and OCR, or stronger VLM APIs and e…

2023

Extrapolating Multilingual Understanding Models as Multilingual Generators

EMNLP 2023long findings

Multilingual understanding models (or encoder-based), pre-trained via masked language modeling, have achieved promising results on many language understanding tasks (e.g., mBERT). However, these models are not capable of generating high-quality text compared with decoder-based causal language models…

Cited by 0SourcecodeScholar
2022

Sentence Representation Learning with Generative Objective rather than Contrastive Objective

EMNLP 2022main

Though offering amazing contextualized token-level representations, current pre-trained language models take less attention on accurately acquiring sentence-level representation during their self-supervised pre-training. However, contrastive objectives which dominate the current sentence representat…

2022

Sentence-aware Contrastive Learning for Open-Domain Passage Retrieval

ACL 2022long

Training dense passage representations via contrastive learning has been shown effective for Open-Domain Passage Retrieval (ODPR). Existing studies focus on further optimizing by improving negative sampling strategy or extra pretraining. However, these studies keep unknown in capturing passage with…