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Hanzi Xu

dblp:229/0397 · DBLP profile ↗
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5ranked-venue papers
1as first author
4since 2021 · last 2025
0000-0003-2111-1087ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 4 · 1 first-author · 4 since 2021Graphics, computer vision, multimedia, augmented reality and games · 1 · 1 since 2021Applied, interdisciplinary, general and emerging computing · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Artificial intelligence
2 papers
Language models and text generation · 76% Efficient and distributed learning · 24%
Theoretical computer science
1 paper
Mathematical optimization · 100%
Interdisciplinary, comprehensive, and emerging computing
1 paper
Computing education · 100%

Topics — the 9 heaviest of 9, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Natural language and speech › Language models and text generation
large language model evaluation
0.912025
AAAR-1.0: Assessing AI's Potential to Assist Research · ICML 2025
Computing education
AI-assisted research
0.912025
AAAR-1.0: Assessing AI's Potential to Assist Research · ICML 2025
Natural language and speech › Language models and text generation
instruction following
0.812024
MUFFIN: Curating Multi-Faceted Instructions for Improving Instruction Following · ICLR 2024
Natural language and speech › Language models and text generation
instruction tuning
0.812024
MUFFIN: Curating Multi-Faceted Instructions for Improving Instruction Following · ICLR 2024
Machine learning › Efficient and distributed learning › data curation
training data curation
0.812024
MUFFIN: Curating Multi-Faceted Instructions for Improving Instruction Following · ICLR 2024
Mathematical optimization › submodular optimization › submodular maximization
continuous DR-submodular maximization
0.512021
Sample Efficient Decentralized Stochastic Frank-Wolfe Methods for Continuous DR-Submodular Maximization · IJCAI 2021
Mathematical optimization › distributed optimization
decentralized optimization
0.512021
Sample Efficient Decentralized Stochastic Frank-Wolfe Methods for Continuous DR-Submodular Maximization · IJCAI 2021
Mathematical optimization
distributed optimization
0.512021
Sample Efficient Decentralized Stochastic Frank-Wolfe Methods for Continuous DR-Submodular Maximization · IJCAI 2021
Mathematical optimization
submodular optimization
0.512021
Sample Efficient Decentralized Stochastic Frank-Wolfe Methods for Continuous DR-Submodular Maximization · IJCAI 2021

Methods — techniques the papers use, named apart from their topics

benchmark construction · 1.7stochastic frank-wolfe · 0.5decentralized frank-wolfe · 0.5
YearPublicationVenuePosition
2025 AAAR-1.0: Assessing AI's Potential to Assist Research
abstract
Numerous studies have assessed the proficiency of AI systems, particularly large language models (LLMs), in facilitating everyday tasks such as email writing, question answering, and creative content generation. However, researchers face unique challenges and opportunities in leveraging LLMs for their own work, such as brainstorming research ideas, designing experiments, and writing or reviewing papers. In this study, we introduce AAAR-1.0, a benchmark dataset designed to evaluate LLM performance in three fundamental, expertise-intensive research tasks: (i) EquationInference, assessing the correctness of equations based on the contextual information in paper submissions; (ii) ExperimentDesign, designing experiments to validate research ideas and solutions; and (iii) PaperWeakness, identifying weaknesses in paper submissions. AAAR-1.0 differs from prior benchmarks in two key ways: first, it is explicitly research-oriented, with tasks requiring deep domain expertise; second, it is researcher-oriented, mirroring the primary activities that researchers engage in on a daily basis. An evaluation of both open-source and proprietary LLMs reveals their potential as well as limitations in conducting sophisticated research tasks. We will release the AAAR-1.0 and keep iterating it to new versions.
Renze Lou, Hanzi Xu, Jiangshu Du, Ryo Kamoi, Xiaoxin Lu, Yuxuan Sun 0002, Yusen Zhang 0001, Jihyun Janice Ahn, Hongchao Fang, Zhuoyang Zou, Kai Zhang 0033, Congying Xia, Lifu Huang, Wenpeng Yin 0001
ICML2
2024 MUFFIN: Curating Multi-Faceted Instructions for Improving Instruction Following
abstract
In the realm of large language models (LLMs), enhancing instruction-following capability often involves curating expansive training data. This is achieved through two primary schemes: i) Scaling-Inputs: Amplifying (input, output) pairs per task instruction, aiming for better instruction adherence. ii) Scaling Input-Free Tasks: Enlarging tasks, each composed of an (instruction, output) pair (without requiring a separate input anymore). However, LLMs under Scaling-Inputs tend to be overly sensitive to inputs, leading to misinterpretation or non-compliance with instructions. Conversely, Scaling Input-Free Tasks demands a substantial number of tasks but is less effective in instruction following when dealing with instances in Scaling-Inputs. This work introduces MUFFIN, a new scheme of instruction-following dataset curation. Specifically, we automatically Scale Tasks per Input by diversifying these tasks with various input facets. Experimental results across four zero-shot benchmarks, spanning both Scaling-Inputs and Scaling Input-Free Tasks schemes, reveal that LLMs, at various scales, trained on MUFFIN generally demonstrate superior instruction-following capabilities compared to those trained on the two aforementioned schemes.
Renze Lou, Kai Zhang 0033, Yuxuan Sun 0002, Jihyun Janice Ahn, Hanzi Xu, Yu Su 0001, Wenpeng Yin 0001
ICLR6
2022 OpenStance: Real-world Zero-shot Stance Detection
abstract
Prior studies of zero-shot stance detection identify the attitude of texts towards unseen topics occurring in the same document corpus.Such task formulation has three limitations: (i) Single domain/dataset.A system is optimized on a particular dataset from a single domain; therefore, the resulting system cannot work well on other datasets; (ii) the model is evaluated on a limited number of unseen topics; (iii) it is assumed that part of the topics has rich annotations, which might be impossible in real-world applications.These drawbacks will lead to an impractical stance detection system that fails to generalize to open domains and open-form topics.This work defines OpenStance: opendomain zero-shot stance detection, aiming to handle stance detection in an open world with neither domain constraints nor topicspecific annotations.The key challenge of OpenStance lies in the open-domain generalization: learning a system with fully unspecific supervision but capable of generalizing to any dataset.To solve OpenStance, we propose to combine indirect supervision, from textual entailment datasets, and weak supervision, from data generated automatically by pretrained Language Models.Our single system, without any topic-specific supervision, outperforms the supervised method on three popular datasets.To our knowledge, this is the first work that studies stance detection under the open-domain zero-shot setting.All data and code are publicly released.1
Hanzi Xu, Slobodan Vucetic, Wenpeng Yin 0001
CoNLL1
2021 Sample Efficient Decentralized Stochastic Frank-Wolfe Methods for Continuous DR-Submodular Maximization
abstract
Continuous DR-submodular maximization is an important machine learning problem, which covers numerous popular applications. With the emergence of large-scale distributed data, developing efficient algorithms for the continuous DR-submodular maximization, such as the decentralized Frank-Wolfe method, became an important challenge. However, existing decentralized Frank-Wolfe methods for this kind of problem have the sample complexity of $\mathcal{O}(1/\epsilon^3)$, incurring a large computational overhead. In this paper, we propose two novel sample efficient decentralized Frank-Wolfe methods to address this challenge. Our theoretical results demonstrate that the sample complexity of the two proposed methods is $\mathcal{O}(1/\epsilon^2)$, which is better than $\mathcal{O}(1/\epsilon^3)$ of the existing methods. As far as we know, this is the first published result achieving such a favorable sample complexity. Extensive experimental results confirm the effectiveness of the proposed methods.
Hongchang Gao, Hanzi Xu, Slobodan Vucetic
IJCAI2
2018 CircPrimer: a software for annotating circRNAs and determining the specificity of circRNA primers
abstract
BACKGROUND: Since circular RNAs (circRNAs) post-transcriptionally regulate gene expression, they have attracted increasing attention. However, there is no existing tool to annotate and extract spliced sequences for circRNAs and no tool to determine the specificity of circRNA primers. RESULTS: In this study, we present circPrimer, which allows users to search, annotate, and visualize circRNAs. Additionally, circPrimer enables users to extract the spliced sequences and genomic sequences of any circRNA, including novel circRNAs. Furthermore, circPrimer help users to design primers for circRNAs and to determine the specificity of the circRNA primers. CONCLUSIONS: CircPrimer is a user-friendly tool for exploring circRNAs that does not require special user skills.
Shanliang Zhong, Hanzi Xu, Jifeng Feng
BMC Bioinform.4