Papers by Fuji Ren
Beyond Explicit Refusals: Soft-Failure Attacks on Retrieval-Augmented Generation (2026.acl-long)
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| Challenge: | Existing jamming attacks on RAG systems typically induce explicit refusals or denial-of-service behaviors. |
| Approach: | They propose a black-box attack framework that exploits safety-aligned behaviors of large language models to trigger soft failures. |
| Outcome: | The proposed framework exploits safety-aligned behaviors of large language models to induce soft failures. |
EthicMind: A Risk-Aware Framework for Ethical-Emotional Alignment in Multi-Turn Dialogue (2026.acl-long)
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| Challenge: | Existing dialogue models address empathy and ethical safety in isolation . Existing models fail to adapt their behavior as ethical risk and user emotion evolve . |
| Approach: | They propose a risk-aware framework that integrates ethical-emotional alignment in dialogue as an explicit turn-level decision problem. |
| Outcome: | The proposed framework achieves more consistent ethical guidance and emotional engagement than baselines in ethically complex interactions. |
ECC: An Emotion-Cause Conversation Dataset for Empathy Response (2025.emnlp-main)
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| Challenge: | Existing empathy dialogue datasets focus on emotion labels while cause annotations are added post hoc. |
| Approach: | They propose an emotion-cause conversation dataset with 2.4K dialogues that can be scalable . they use a framework that utilizes knowledge and large language models to automatically generate dialogues . |
| Outcome: | The proposed dataset can achieve comparable or even superior performance to existing empathy dialogue datasets. |