Research Projects

Working Projects

Multilingual IR

• Dense retrieval
• Crosslingual relevance transfer for multilingual dense retrieval.
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Efficient Personalized Retrieval for News Recommendation

• Contextualized recommendation
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Self-supervised Dense Retriver for Open-domain Question Answering

• Retrieval-agumented training for retriever and reranker.
• Data augmentation for out-domain tasks

Clarification question generation for interactive search.

• Corpus-aware Clarification question generation
• Generating the clarification questions for conversational QA, or ad-hoc QA.
• Extend from traditional question generation/suggestion/retrieval methods.

Other Projects

Late-interaction conversational query embeddings

• Conversational dense retrieval
• A follow up work of Contextualized query embeddings (CQE) for conversational search.
• Decoupled the query embeddings of conversational for longer diaglogue history.
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ColBERTZoo

• Exploring appropriate objectives for dense passage retrievers.
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BERT-Lime

• Learning to explain mdoel predictions.
• Generating rationales for supervised learning tasks.
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BERT rationale extraction

• Predicting important words for sentence(s) relationship.
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Multiview learning

• Learning text representation with mutiple views.
• A follow work for T5 passage re-ranking models.
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