VLDB 2026 Research / reviewers in the wild / expert
Fangyu Lei
dblp:329/5621
· DBLP profile ↗
11ranked-venue papers
4as first author
11since 2021 · last 2026
0000-0002-1678-1118ORCID · corroborated
Domains — the database's venue-derived domains; a paper can count in several
Artificial intelligence and machine learning · 10 · 4 first-author · 10 since 2021Graphics, computer vision, multimedia, augmented reality and games · 2 · 1 first-author · 2 since 2021
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2026 | TaREx: Reinforcement Learning for Code-Driven Table Reasoning
Fangyu Lei, Jinxiang Meng, Shizhu He, Jun Zhao 0001, Kang Liu 0001 |
AAAI | 1 |
| 2026 | GATE: Graph-based Adaptive Tool Evolution Across Diverse TasksabstractJianwen Luo, Yiming Huang, Jinxiang Meng, Fangyu Lei, Shizhu He, Xiao Liu, Shanshan Jiang, Bin Dong, Jun Zhao, Kang Liu. Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers). 2026. Jinxiang Meng, Fangyu Lei, Shizhu He, Shanshan Jiang 0001, Bin Dong 0003, Jun Zhao 0001, Kang Liu 0001 |
ACL (1) | 4 |
| 2025 | Spider 2.0: Evaluating Language Models on Real-World Enterprise Text-to-SQL WorkflowsabstractReal-world enterprise text-to-SQL workflows often involve complex cloud or local data across various database systems, multiple SQL queries in various dialects, and diverse operations from data transformation to analytics.
We introduce Spider 2.0, an evaluation framework comprising $632$ real-world text-to-SQL workflow problems derived from enterprise-level database use cases.
The databases in Spider 2.0 are sourced from real data applications, often containing over 1,000 columns and stored in local or cloud database systems such as BigQuery and Snowflake.
We show that solving problems in Spider 2.0 frequently requires understanding and searching through database metadata, dialect documentation, and even project-level codebases.
This challenge calls for models to interact with complex SQL workflow environments, process extremely long contexts, perform intricate reasoning, and generate multiple SQL queries with diverse operations, often exceeding $100$ lines, which goes far beyond traditional text-to-SQL challenges.
Our evaluations indicate that based on o1-preview, our code agent framework successfully solves only 21.3\% of the tasks, compared with 91.2\% on Spider 1.0 and 73.0\% on BIRD.
Our results on Spider 2.0 show that while language models have demonstrated remarkable performance in code generation --- especially in prior text-to-SQL benchmarks --- they require significant improvement in order to achieve adequate performance for real-world enterprise usage.
Progress on Spider 2.0 represents crucial steps towards developing intelligent, autonomous, code agents for real-world enterprise settings.
Our code, baseline models, and data are available at [spider2-sql.github.io](spider2-sql.github.io) . Fangyu Lei, Jixuan Chen, Yuxiao Ye, Ruisheng Cao, Dongchan Shin, Hongjin Su, Zhaoqing Suo, Hongcheng Gao, Wenjing Hu, Victor Zhong, Caiming Xiong, Ruoxi Sun 0002, Qian Liu 0033, Sida I. Wang, Tao Yu 0009 |
ICLR | 1 |
| 2025 | OpenCUA: Open Foundations for Computer-Use AgentsabstractVision-language models have demonstrated impressive capabilities as computer-use agents (CUAs) capable of automating diverse computer tasks. As their commercial potential grows, critical details of the most capable CUA systems remain closed. As these agents will increasingly mediate digital interactions and execute consequential decisions on our behalf, the research community needs access to open CUA frameworks to study their capabilities, limitations, and risks. To bridge this gap, we propose OpenCUA, a comprehensive open-source framework for scaling CUA data and foundation models. Our framework consists of: (1) an annotation infrastructure that seamlessly captures human computer-use demonstrations; (2) AgentNet, the first large-scale computer-use task dataset spanning 3 operating systems and 200+ applications and websites; (3) a scalable pipeline that transforms demonstrations into state–action pairs with reflective long Chain-of-Thought reasoning that sustain robust performance gains as data scales. Our end-to-end agent models demonstrate strong performance across CUA benchmarks. In particular, OpenCUA-72B achieves an average success rate of 45.0% on OSWorld‑Verified, establishing a new state-of-the-art (SOTA) among open-source models. Further analysis confirms that our approach generalizes well across domains and benefits significantly from increased test-time computation. We release our annotation tool, datasets, code, and models to build open foundations for further CUA research. Xinyuan Wang 0010, Dunjie Lu, Junlin Yang, Tianbao Xie, Xiaole Guo, Yiheng Xu, Chen Henry Wu, Zhennan Shen, Zhuokai Li, Xiaochuan Li 0003, Junda Chen, Boyuan Zheng 0001, Peihang Li, Fangyu Lei, Ruisheng Cao, Yeqiao Fu, Dongchan Shin, Martin Shin, Jiarui Hu 0006, Jixuan Chen, Yuxiao Ye, Yipu Wang, Diyi Yang, Victor Zhong, Y. Charles, Tao Yu 0009 |
NeurIPS | 18 |
| 2024 | DA-Code: Agent Data Science Code Generation Benchmark for Large Language ModelsabstractYiming Huang, Jianwen Luo, Yan Yu, Yitong Zhang, Fangyu Lei, Yifan Wei, Shizhu He, Lifu Huang, Xiao Liu, Jun Zhao, Kang Liu. Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing. 2024. Fangyu Lei, Yifan Wei 0001, Shizhu He, Lifu Huang, Jun Zhao 0001, Kang Liu 0001 |
EMNLP | 5 |
| 2024 | Neeko: Leveraging Dynamic LoRA for Efficient Multi-Character Role-Playing AgentabstractLarge Language Models (LLMs) have revolutionized open-domain dialogue agents but encounter challenges in multi-character roleplaying (MCRP) scenarios.To address this issue, this work presents Neeko, an innovative framework designed for efficient multiplecharacter role-playing.The proposed framework breaks down the role-playing agent's training process into agent pre-tuning, multiple character playing, and character incremental learning, effectively handling both seen and unseen roles.Neeko employs a dynamic low-rank adapter (LoRA) strategy by training separate LoRA blocks independently for each character, alongside incorporating a gating network for role selection.This design allows Neeko to seamlessly adjust to a wide range of characters, thereby bolstering its adaptability to distinctive attributes, personalities, and speech patterns.As a result, Neeko demonstrates superior performance in MCRP over most existing methods, offering more engaging and versatile user interaction experiences. Tongxu Luo, Yifan Wei 0001, Fangyu Lei, Hao Peng 0001, Liehuang Zhu |
EMNLP | 4 |
| 2024 | S3Eval: A Synthetic, Scalable, Systematic Evaluation Suite for Large Language ModelabstractFangyu Lei, Qian Liu, Yiming Huang, Shizhu He, Jun Zhao, Kang Liu. Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers). 2024. Fangyu Lei, Qian Liu 0033, Shizhu He, Jun Zhao 0001, Kang Liu 0001 |
NAACL-HLT | 1 |
| 2024 | Spider2-V: How Far Are Multimodal Agents From Automating Data Science and Engineering Workflows?abstractData science and engineering workflows often span multiple stages, from warehousing to orchestration, using tools like BigQuery, dbt, and Airbyte. As vision language models (VLMs) advance in multimodal understanding and code generation, VLM-based agents could potentially automate these workflows by generating SQL queries, Python code, and GUI operations. This automation can improve the productivity of experts while democratizing access to large-scale data analysis. In this paper, we introduce Spider2-V, the first multimodal agent benchmark focusing on professional data science and engineering workflows, featuring 494 real-world tasks in authentic computer environments and incorporating 20 enterprise-level professional applications. These tasks, derived from real-world use cases, evaluate the ability of a multimodal agent to perform data-related tasks by writing code and managing the GUI in enterprise data software systems. To balance realistic simulation with evaluation simplicity, we devote significant effort to developing automatic configurations for task setup and carefully crafting evaluation metrics for each task. Furthermore, we supplement multimodal agents with comprehensive documents of these enterprise data software systems. Our empirical evaluation reveals that existing state-of-the-art LLM/VLM-based agents do not reliably automate full data workflows (14.0% success). Even with step-by-step guidance, these agents still underperform in tasks that require fine-grained, knowledge-intensive GUI actions (16.2%) and involve remote cloud-hosted workspaces (10.6%). We hope that Spider2-V paves the way for autonomous multimodal agents to transform the automation of data science and engineering workflow. Our code and data are available at https://spider2-v.github.io. Ruisheng Cao, Fangyu Lei, Haoyuan Wu, Jixuan Chen, Yeqiao Fu, Hongcheng Gao, Xinzhuang Xiong, Hanchong Zhang, Wenjing Hu, Tianbao Xie, Hongshen Xu, Sida I. Wang, Ruoxi Sun 0002, Caiming Xiong, Ansong Ni, Qian Liu 0033, Victor Zhong, Lu Chen 0002, Kai Yu 0004, Tao Yu 0009 |
NeurIPS | 2 |
| 2024 | OSWorld: Benchmarking Multimodal Agents for Open-Ended Tasks in Real Computer EnvironmentsabstractAutonomous agents that accomplish complex computer tasks with minimal human interventions have the potential to transform human-computer interaction, significantly enhancing accessibility and productivity. However, existing benchmarks either lack an interactive environment or are limited to environments specific to certain applications or domains, failing to reflect the diverse and complex nature of real-world computer use, thereby limiting the scope of tasks and agent scalability. To address this issue, we introduce OSWorld, the first-of-its-kind scalable, real computer environment for multimodal agents, supporting task setup, execution-based evaluation, and interactive learning across various operating systems such as Ubuntu, Windows, and macOS. OSWorld can serve as a unified, integrated computer environment for assessing open-ended computer tasks that involve arbitrary applications. Building upon OSWorld, we create a benchmark of 369 computer tasks involving real web and desktop apps in open domains, OS file I/O, and workflows spanning multiple applications. Each task example is derived from real-world computer use cases and includes a detailed initial state setup configuration and a custom execution-based evaluation script for reliable, reproducible evaluation. Extensive evaluation of state-of-the-art LLM/VLM-based agents on OSWorld reveals significant deficiencies in their ability to serve as computer assistants. While humans can accomplish over 72.36% of the tasks, the best model achieves only 12.24% success, primarily struggling with GUI grounding and operational knowledge. Comprehensive analysis using OSWorld provides valuable insights for developing multimodal generalist agents that were not possible with previous benchmarks. Our code, environment, baseline models, and data are publicly available at this https URL. Tianbao Xie, Jixuan Chen, Xiaochuan Li 0003, Siheng Zhao, Ruisheng Cao, Toh Jing Hua, Zhoujun Cheng, Dongchan Shin, Fangyu Lei, Yitao Liu, Yiheng Xu, Shuyan Zhou, Silvio Savarese, Caiming Xiong, Victor Zhong, Tao Yu 0009 |
NeurIPS | 10 |
| 2023 | Answer-Based Entity Extraction and Alignment for Visual Text Question AnsweringabstractAs a variant of visual question answering (VQA), visual text question answering (VTQA) provides a text-image pair for each question. Text utilizes named entities to describe corresponding image. Consequently, the ability to perform multi-hop reasoning using named entities between text and image becomes critically important. However, existing models pay relatively less attention to this aspect. Therefore, we propose Answer-Based Entity Extraction and Alignment Model (AEEA) to enable a comprehensive understanding and support multi-hop reasoning. The core of AEEA lies in two main components: AKECMR and answer aware predictor. The former emphasizes the alignment of modalities and effectively distinguishes between intra-modal and inter-modal information, and the latter prioritizes the full utilization of intrinsic semantic information contained in answers during training. Our model outperforms the baseline by 2.24% on test-dev set and 1.06% on test set, securing the third place in VTQA2023(English). Jun Yu 0001, Mohan Jing, Weihao Liu 0004, Tongxu Luo, Keda Lu, Fangyu Lei, Jianqing Sun, Jiaen Liang |
ACM Multimedia | 7 |
| 2022 | Answering Numerical Reasoning Questions in Table-Text Hybrid Contents with Graph-based Encoder and Tree-based Decoder
Fangyu Lei, Shizhu He, Jun Zhao 0001, Kang Liu 0001 |
COLING | 1 |