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Yiming Du

9 accepted papers

2026

Deep Incomplete Multi-View Clustering via Hierarchical Imputation and Alignment

AAAI 2026technical

Incomplete multi-view clustering (IMVC) aims to discover shared cluster structures from multi-view data with partial observations. The core challenges lie in accurately imputing missing views without introducing bias, while maintaining semantic consistency across views and compactness within cluster

Cited by 0SourcePDFScholar
2026

MemGuide: Intent-Driven Memory Selection for Goal-Oriented Multi-Session LLM Agents

AAAI 2026technical

Modern task-oriented dialogue (TOD) systems increasingly rely on large language model (LLM) agents, leveraging Retrieval-Augmented Generation (RAG) and long-context capabilities for long-term memory utilization. However, these methods prioritise semantic similarity over task intent, degrading multi-

Cited by 0SourcePDFScholar
2026

Memory-T1: Reinforcement Learning for Temporal Reasoning in Multi-session Agents

ICLR 2026poster

Temporal reasoning over long, multi-session dialogues is a critical capability for conversational agents. As dialogue histories grow in length and accumulate noise, existing long-context models struggle to accurately identify temporally pertinent information, significantly impairing reasoning perfor…

Cited by 0SourcecodeScholar
2025

A New Formula for Sticker Retrieval: Reply with Stickers in Multi-Modal and Multi-Session Conversation

AAAI 2025technical

Stickers are widely used in online chatting, which can vividly express someone's intention, emotion, or attitude. Existing conversation research typically retrieves stickers based on a single session or the previous textual information, which can not adapt to the multi-modal and multi-session nature…

Cited by 0SourcePDFScholar
2025

Flexibly Utilize Memory for Long-Term Conversation via a Fragment-then-Compose Framework

EMNLP 2025

Large language models (LLMs) have made significant breakthroughs in extracting useful information from conversation history to enhance the response in long-term conversations. Summarizing useful information from historical conversations has achieved remarkable performance, which, however, may introd

2025

MlingConf: A Comprehensive Study of Multilingual Confidence Estimation on Large Language Models

ACL 2025finding

The tendency of Large Language Models (LLMs) to generate hallucinations raises concerns regarding their reliability. Therefore, confidence estimations indicating the extent of trustworthiness of the generations become essential. However, current LLM confidence estimations in languages other than Eng…

2025

ReSURE: Regularizing Supervision Unreliability for Multi-turn Dialogue Fine-tuning

EMNLP 2025

Fine-tuning multi-turn dialogue systems requires high-quality supervision but often suffers from degraded performance when exposed to low-quality data. Supervision errors in early turns can propagate across subsequent turns, undermining coherence and response quality. Existing methods typically addr

2024

M3sum: A Novel Unsupervised Language-Guided Video Summarization

ICASSP 2024accepted

Language-guided video summarization empowers users to use natural language queries to effortlessly summarize lengthy videos into concise and relevant summaries that cater specifically to their information needs, which is more friendly to access and digest. However, most of the previous works rely on…

Cited by 0SourceScholar
2023

UniTRec: A Unified Text-to-Text Transformer and Joint Contrastive Learning Framework for Text-based Recommendation

ACL 2023short

Prior study has shown that pretrained language models (PLM) can boost the performance of text-based recommendation. In contrast to previous works that either use PLM to encode user history as a whole input text, or impose an additional aggregation network to fuse multi-turn history representations,…