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liyan xu wechat ai tencent liyan xu research scientist wechat ai tencent liyanxu nlp gmail com about me i am currently a senior research scientist at wechat ai tencent focusing on natural language processing nlp and large language models llm i graduated with phd of computer science from emory advised by dr jinho choi and co advised by dr fei liu in 2023 research interests my current research interests focus around agentic context comprehension and llm memory looking forward to research collaboration and discussions news 06 2023 started research scientist wechat ai 05 2023 completed my phd journey emory 05 2022 started applied scientist intern amazon product graph 05 2021 started applied scientist intern amazon alexa asr 10 2020 started research collaboration nec labs america 08 2020 winning team of the 2020 amazon alexa prize chatbot competition selected publications equal contribution project lead context comprehension prelude a benchmark designed to require global comprehension and reasoning over long contexts mo yu tsz ting chung chulun zhou tong li rui lu jiangnan li liyan xu haoshu lu ning zhang jing li jie zhou arxiv preprint 2508 09848 sitemb v1 5 improved context aware dense retrieval for semantic association and long story comprehension junjie wu jiangnan li yuqing li lemao liu liyan xu jiwei li dit yan yeung jie zhou mo yu acl 26 the 64th annual meeting of the association for computational linguistics comorag a cognitive inspired memory organized rag for stateful long narrative reasoning juyuan wang rongchen zhao wei wei yufeng wang mo yu jie zhou jin xu liyan xu aaai 26 the 40th aaai conference on artificial intelligence fine grained modeling of narrative context a coherence perspective via retrospective questions liyan xu jiangnan li mo yu jie zhou acl 24 the 62nd annual meeting of the association for computational linguistics zero shot cross lingual machine reading comprehension via inter sentence dependency graph liyan xu xuchao zhang bo zong yanchi liu wei cheng jingchao ni haifeng chen liang zhao jinho choi aaai 22 the 36th aaai conference on artificial intelligence language modeling efficiency how far ahead do llms plan uncovering the latent horizon in chain of thought reasoning liyan xu mo yu fandong meng jie zhou icml 26 the 43rd international conference on machine learning refreekv towards threshold free kv cache compression xuanfan ni liyan xu chenyang lyu longyue wang mo yu lemao liu fandong meng jie zhou piji li acl 26 findings the 64th annual meeting of the association for computational linguistics rescorebert discriminative speech recognition rescoring with bert liyan xu yile gu jari kolehmainen haidar khan ankur gandhe ariya rastrow andreas stolcke ivan bulyko icassp 22 2022 ieee international conference on acoustics speech and signal processing boosting cross lingual transfer via self learning with uncertainty estimation liyan xu xuchao zhang xujiang zhao haifeng chen feng chen jinho choi emnlp 21 the 2021 conference on empirical methods in natural language processing representation learning alignment dense retrievers can fail on simple queries revealing the granularity dilemma of embeddings liyan xu zhenlin su mo yu jiangnan li fandong meng jie zhou emnlp 25 findings the 2025 conference on empirical methods in natural language processing towards open world product attribute mining a lightly supervised approach liyan xu chenwei zhang xian li jingbo shang jinho choi acl 23 the 61st annual meeting of the association for computational linguistics information extraction discourse identifying factual inconsistencies in summaries grounding model inference via task taxonomy liyan xu zhenlin su mo yu jin xu jinho choi jie zhou fei liu emnlp 24 findings the 2024 conference on empirical methods in natural language processing sig speaker identification in literature via prompt based generation zhenlin su liyan xu jin xu jiangnan li mingdu huangfu aaai 24 the 38th aaai conference on artificial intelligence modeling task interactions in document level joint entity and relation extraction liyan xu jinho choi naacl 22 the 2022 conference of the north american chapter of the association for computational linguistics online coreference resolution for dialogue processing improving mention linking on real time conversations liyan xu jinho choi sem 22 the 11th joint conference on lexical and computational semantics adapted end to end coreference resolution system for anaphoric identities in dialogues liyan xu jinho choi the codi crac 2021 shared task on anaphora bridging and discourse deixis in dialogue revealing the myth of higher order inference in coreference resolution liyan xu jinho choi emnlp 20 the 2020 conference on empirical methods in natural language processing applications covid 19 pandemic associated changes in the acuity of brain mri findings a secondary analysis of reports using natural language processing taejin min liyan xu jinho choi ranliang hu jason allen christopher reeves derek hsu richard duszak jeffrey switchenko gelareh sadigh current problems in diagnostic radiology july august 2022 noise pollution in hospital readmission prediction long document classification with reinforcement learning liyan xu julien hogan rachel patzer jinho choi bionlp 20 the 19th sigbiomed workshop on biomedical language processing professional services program committee member arr rolling acl emnlp naacl aaai neurips icml iclr other activities i enjoy wandering in nature with my camera in hand my gallery