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					<h1> Alyssa, Yi CHENG (程轶) </h1>
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				<h3>Ph.D. Student</h3>
				<p>
					Department of Computing, <br>
					The Hong Kong Polytechnic University, <br>
					Hung Hom, Kowloon, Hong Kong, China <br>

					<br>
					<a href="https://yicheng98.github.io/Yi_CHENG_CV.pdf"><img src="pic/cv-96.png" height="25px" style="margin-bottom:-5px"> Resume</a> &nbsp | &nbsp
					<a href="mailto:alyssa.cheng@connect.polyu.hk"><img src="pic/email.png" height="23 px" style="margin-bottom:-5px"> &nbsp  Email</a> &nbsp | &nbsp
					<a href="https://scholar.google.com/citations?user=4FWRdrAAAAAJ&hl=en"><img src="pic/google-scholar.png" height="25px" style="margin-bottom:-5px"> Google Scholar</a>					
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<p style="text-align:justify";>
	I am a fourth-year Ph.D. candidate at <a href="https://www.polyu.edu.hk/" target="_blank">The Hong Kong Polytechnic University</a>,
	specializing at Natural Language Processing (NLP) under the mentorship of Prof. <a href="http://www4.comp.polyu.edu.hk/~cswjli/" target="_blank">Maggie Wenjie Li</a>.
	I earned my Bachelor's degree in Computer Science from <a href="https://english.pku.edu.cn/" target="_blank"> Peking University</a>, where I had the privilege of working with Prof. <a href="https://scholar.google.com/citations?user=RvBDhSwAAAAJ&hl=eng" target="_blank"> Sujian Li</a>.
	Currently, I am engaged as a research intern at Microsoft Research Asia, where I am honored to work with <a href="https://scholar.google.com/citations?user=piUkwMYAAAAJ&hl=en" target="_blank">Dr. Yeyun Gong</a> and <a href="https://scholar.google.com/citations?user=cn1k7gYAAAAJ&hl=en" target="_blank">Dr. Xiao Liu</a>.
	Before that, I also had the opportunity to intern at <a href="https://jarvislab.tencent.com/index-en.html" target="_blank">Tencent Jarvis Research Center</a>, where I contributed under the guidance of Prof. <a href="https://sites.google.com/site/yefengzheng" target="_blank">Yefeng Zheng</a> and Prof. <a href="https://www-labs.iro.umontreal.ca/~liubang/" target="_blank">Bang Liu</a>.
</p>


<h2>Research Interest</h2>
<p style="text-align:justify";>
	My research interest broadly lies in the NLP techniques for social good. In recent years, my research has specifically focused on the following directions:
	<ul>
	<li> NLP applications for mental healthcare (e.g. emotional support conversation systems, empathetic chatbots).
	</li>
	<li> NLP applications in the medical field, especially medical consultation dialogue systems.
	</li>
	</ul>
	<p style="text-align:justify";>
	Previously, I also did some research on Chinese discourse parsing and question generation in my undergraduate years.
	</p>
</p>

<h2> Preprint
<!--<h4>(see full list in <a href="https://scholar.google.com/citations?user=4FWRdrAAAAAJ&hl=en">Google Scholar</a>)</h4>-->
</h2>

<ul>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Sigma: Differential Rescaling of Query, Key and Value for Efficient Language Models</b>
		[<a href="https://arxiv.org/pdf/2501.13629">arXiv</a>]
		<br>
		Zhenghao Lin, Zihao Tang, Xiao Liu, Yeyun Gong, <b>Yi Cheng</b>, Qi Chen, Hang Li, Ying Xin, Ziyue Yang, et al.<br>
	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>AutoPal: Autonomous Adaptation to Users for Personal AI Companionship</b>
		[<a href="https://arxiv.org/pdf/2406.13960">arXiv</a>]
		<br>
		<b>Yi Cheng</b>, Wenge Liu, Kaishuai Xu, Wenjun Hou, Yi Ouyang, Chak Tou Leong, Xian Wu, Yefeng Zheng<br>
	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>No Two Devils Alike: Unveiling Distinct Mechanisms of Fine-tuning Attacks</b>
		[<a href="https://arxiv.org/pdf/2405.16229">arXiv</a>]
		<br>
		Chak Tou Leong, <b>Yi Cheng</b>, Kaishuai Xu, Jian Wang, Hanlin Wang, Wenjie Li<br>
	    </p>
    </li>
</ul>

<h2> Publications
<!--<h4>(see full list in <a href="https://scholar.google.com/citations?user=4FWRdrAAAAAJ&hl=en">Google Scholar</a>)</h4>-->
</h2>

<ul>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Integrative Decoding: Improve Factuality via Implicit Self-consistency</b>
		[<a href="https://arxiv.org/pdf/2410.01556v4">arXiv</a>]
		[<a href="https://github.com/YiCheng98/IntegrativeDecoding">code</a>]
		<br>
		<b>Yi Cheng</b>, Xiao Liang, Yeyun Gong, Wen Xiao, Song Wang, Yuji Zhang, Wenjun Hou, Kaishuai Xu, Wenge Liu, Wenjie Li, Jian Jiao, Qi Chen, Peng Cheng, Wayne Xiong<br>
		<b>ICLR 2025</b>. <br>
	    </p>
    </li>
    <li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>COOPER: Coordinating Specialized Agents towards a Complex Dialogue Goal</b>
		[<a href="http://arxiv.org/abs/2312.11792">arXiv</a>]
		[<a href="https://github.com/YiCheng98/Cooper">code</a>]
		<br>
		<b>Yi Cheng</b>, Wenge Liu, Jian Wang, Chak Tou Leong, Yi Ouyang, Wenjie Li, Xian Wu, Yefeng Zheng<br>
		<b>AAAI 2024</b>. <br>
	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Self-Detoxifying Language Models via Toxification Reversal</b>
		[<a href="https://arxiv.org/abs/2310.09573">arXiv</a>]
		[<a href="https://github.com/cooperleong00/ToxificationReversal">code</a>]
		<br>
		Chak Tou Leong*, <b>Yi Cheng</b>*, Jiashuo Wang, Jian Wang, and Wenjie Li.  (*: Equal Contribution)<br>
		<b>EMNLP 2023</b>. <br>

	    </p>
    </li>

	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>ICON: Improving Inter-Report Consistency of Radiology Report Generation via Lesion-aware Mix-up Augmentation.</b> [<a href="https://arxiv.org/pdf/2402.12844">arXiv</a>] <br>
		Wenjun Hou, <b>Yi Cheng</b>*, Kaishuai Xu, Yan Hu, Wenjie Li, Jiang Liu. <br>
		<b></b>EMNLP 2024 Findings.<br>
	    </p>
    </li>

	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Reasoning Like a Doctor: Improving Medical Dialogue Systems via Diagnostic Reasoning Process Alignment</b> [<a href="https://aclanthology.org/2024.findings-acl.406.pdf">arXiv</a>] <br>
		Kaishuai Xu, <b>Yi Cheng</b>*, Wenjun Hou*, Qiaoyu Tan, Wenjie Li. <br>
		<b></b>ACL 2024 Findings.<br>
	    </p>
    </li>

	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Target-oriented Proactive Dialogue Systems with Personalization: Problem Formulation and Dataset Curation</b> [<a href="https://arxiv.org/abs/2310.07397">arXiv</a>]
		[<a href="https://github.com/iwangjian/TopDial">code</a>] <br>
		Jian Wang, <b>Yi Cheng</b>, Dongding Lin, Chak Tou Leong, and Wenjie Li. <br>
		<b>EMNLP 2023</b>.<br>
	    </p>
    </li>

	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>RECAP: Towards Precise Radiology Report Generation via Dynamic Disease Progression Reasoning</b> 
		[<a href="https://arxiv.org/abs/2310.13864">arXiv</a>]
		[<a href="https://github.com/wjhou/recap">code</a>] <br>
		Wenjun Hou, <b>Yi Cheng</b>*, Kaishuai Xu*, Wenjie Li, Jiang Liu. (*: Equal Contribution)<br>
		<b>EMNLP Findings, 2023.</b> <br>
<!--		[<a href="">arXiv</a>] (TBA)-->
<!--		[<a href="">code</a>] (TBA)-->
	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>ORGan: Observation-Guided Radiology Report Generation via Tree Reasoning</b>
		[<a href="https://arxiv.org/abs/2306.06466">arXiv</a>]
		[<a href="https://github.com/wjhou/ORGan">code</a>]<br>
		Wenjun Hou, <b>Yi Cheng</b>*, Kaishuai Xu*, Wenjie Li, Jiang Liu. (*: Equal Contribution)<br>
		<b>ACL 2023.</b> <br>

	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Medical Dialogue Generation via Dual Flow Modeling</b>
		[<a href="https://arxiv.org/abs/2305.18109">arXiv</a>] <br>
		Kaishuai Xu, Wenjun Hou*, <b>Yi Cheng</b>*, Jian Wang, Wenjie Li. (*: Equal Contribution)<br>
		<b>ACL Findings, 2023.</b> <br>
	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>Improving Multi-turn Emotional Support Dialogue Generation with Lookahead Strategy Planning</b>
		[<a href="https://arxiv.org/abs/2210.04242">arXiv</a>]
		[<a href="https://github.com/lwgkzl/MultiESC">code</a>] <br>
		<b>Yi Cheng</b>*, Wenge Liu*, Wenjie Li, Jiashuo Wang, Ruihui Zhao, Bang Liu, Xiaodan Liang, Yefeng Zheng. (*: Equal Contribution)<br>
		<b>EMNLP 2022</b> <br>

	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>CARE: Causality Reasoning for Empathetic Responses by Conditional Graph Generation</b>
		[<a href="https://arxiv.org/abs/2211.00255">arXiv</a>]
		[<a href="https://github.com/wangjs9/CARE-master">code</a>] <br>
		Jiashuo Wang, <b>Yi Cheng</b>, Wenjie Li. <br>
		<b>EMNLP Findings, 2022.</b> <br>

	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b>MedDG: An Entity-Centric Medical Consultation Dataset for Entity-Aware Medical Dialogue Generation</b>
		[<a href="https://arxiv.org/abs/2010.07497">arXiv</a>]
		[<a href="https://github.com/lwgkzl/MedDG">code</a>]<br>
		Wenge Liu*, Jianheng Tang*, <b>Yi Cheng</b>*, Wenjie Li, Yefeng Zheng, Xiaodan Liang. (*: Equal Contribution)<br>
		<b>NLPCC 2022.</b> <br>

	    </p>
    </li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b> “My nose is running.”“Are you also coughing?”: Building A Medical Diagnosis Agent with Interpretable Inquiry Logics </b>
		[<a href="https://arxiv.org/abs/2204.13953v2">arXiv</a>]
		[<a href="https://github.com/lwgkzl/BR-Agent">code</a>]<br>
		Wenge Liu*, <b>Yi Cheng</b>*, Hao Wang, Jianheng Tang, Yafei Liu, Ruihui Zhao, Wenjie Li, Yefeng Zheng, Xiaodan Liang. (*: Equal Contribution)<br>
		<b>IJCAI 2022.</b>
	</p>
	</li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b> Guiding the Growth: Difficulty-Controllable Question Generation through Step-by-Step Rewriting </b>
		[<a href="https://arxiv.org/abs/2105.11698">arXiv</a>]
		[<a href="https://drive.google.com/drive/folders/1pF3IM9HbNS4w8OlhuSjH1YSLlb5rjaF3">code</a>]<br>
		<b>Yi Cheng</b>, Siyao Li, Bang Liu, Ruihui Zhao, Sujian Li, Chenghua Lin, Yefeng Zheng.<br>
		<b>ACL 2021.</b>
	</p>
	</li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b> Unifying Discourse Resources with Dependency Framework </b>
		[<a href="https://arxiv.org/pdf/2101.00167.pdf">arXiv</a>]
		[<a href="https://github.com/PKU-TANGENT/UnifiedDep">code</a>]<br>
		<b>Yi Cheng</b>, Sujian Li, Yueyuan Li.<br>
		<b>NLPCC 2021.</b>
	</p>
	</li>
	<li> <p style="margin-left: 0px; line-height: 140%; margin-top: 10px; margin-bottom: 10px;">
		<b> Zero-shot Chinese Discourse Dependency Parsing via Cross-lingual Mapping </b>
		[<a href="https://arxiv.org/abs/1911.12014">arXiv</a>]
		<br>
		<b>Yi Cheng</b>, Sujian Li.<br>
		<b>DSNNLG workshop@INLG 2019.</b>
	</p>
	</li>
</ul>

<!--<h2>Intern Experiences </h2>-->
<!--	<ul>-->
<!--			<li>-->
<!--				<b>Microsoft Research Asia</b>: Research Intern (June 2024-Present)-->
<!--			</li>-->
<!--			<li>-->
<!--				<b>Tencent Jarvis Research Center</b>: Research Intern (May 2020-May 2024)-->
<!--			</li>-->
<!--		</ul>-->

<h2>Professional Activities </h2>
	<p style="margin-left: 0px; line-height: 120%; margin-top: 15px; margin-bottom: 15px;">
	  <strong> We Media</strong> <br>
	</p>
		<ul style="list-style-type:none">
			<li> From December 2020 to July 2022, I served as the editor-in-chief of "夕小瑶科技说" (formerly known as "夕小瑶的卖萌屋"), which is an influential Chinese Wechat public account focused on the field of NLP. During my tenure, I led the team producing over 200 original articles, and the number of subscribers rose from 15k to 100k+. I also wrote 10 original articles myself under the pseudonym of "小轶".</li>
<!--			, most of which can be found at my <a href="https://www.zhihu.com/people/walkforward-89/posts">Zhihu account</a>. -->
			<li>As the chief editor, my role encompassed various responsibilities, such as curating and editing content, managing the editorial team, and seeking collaboration with industry influencers and researchers. </li>
<!--			</li>-->
		</ul>

	<p style="margin-left: 0px; line-height: 120%; margin-top: 15px; margin-bottom: 15px;">
	  <strong> Organizer</strong> <br>
	</p>
		<ul style="list-style-type:none">
		<li> I was one of the organizers of the <a href="https://mlpcp21.github.io/pages/challenge.html" target="_blank">ICLR 2021 Challenge: Machine Learning for Preventing and Combating Pandemics</a>.</li>
		</ul>
	<p style="margin-left: 0px; line-height: 120%; margin-top: 15px; margin-bottom: 15px;">
		<strong>  Conference Reviewer </strong> <br>
	</p>
		<ul style="list-style-type:none">
			<li>I served as the reviewer for ACL (2022), COLING (2022), EMNLP (2021). </li>
		</ul>
	<p style="margin-left: 0px; line-height: 120%; margin-top: 15px; margin-bottom: 15px;">
		<strong> Teaching Assistant</strong> <br>
	</p>
		<ul style="list-style-type:none">
			<li>I served as the teaching assistant for the course "COMP 6709: Advanced Natural Language Processing" in Spring 2023 at HK PolyU.</li>
		</ul>

	<h2> Honors </h2>
		<ul>
			<li>
				1st Prize for <a href="http://www.fudan-disc.com/sharedtask/imcs21/tracks.html#track3">the Competition at 21st China National Conference on Computational Linguistics: Automated Medical Diagnosis Systems</a> in 2021
			</li>
			<li>
				“Outstanding Graduate of Peking University” in 2020
			</li>
			<li>
				“Award for Research Excellents” at Peking University in 2018 and 2019
			</li>
			<li>
				3rd Prize for the “Tencent Cup” Program Design Competition in 2018
			</li>
		</ul>

	<p>
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        <br> 2024 &copy; Yi CHENG | Last updated: Feb. 2025
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