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Retrieval-Augmented Generation (RAG) grounds large language models in external evidence, yet it still falters when answers must be pieced together across semantically distant documents. We close this gap with the Hierarchical Lexical Graph…

In this paper, we present Language Model as Visual Explainer LVX, a systematic approach for interpreting the internal workings of vision models using a tree-structured linguistic explanation, without the need for model training. Central to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Xingyi Yang , Xinchao Wang

While many vision-language models (VLMs) are developed to answer well-defined, straightforward questions with highly specified targets, as in most benchmarks, they often struggle in practice with complex open-ended tasks, which usually…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Chenrui Fan , Yijun Liang , Shweta Bhardwaj , Kwesi Cobbina , Ming Li , Tianyi Zhou

Multimodal named entity recognition and relation extraction (MNER and MRE) is a fundamental and crucial branch in information extraction. However, existing approaches for MNER and MRE usually suffer from error sensitivity when irrelevant…

Computation and Language · Computer Science 2022-12-01 Xiang Chen , Ningyu Zhang , Lei Li , Yunzhi Yao , Shumin Deng , Chuanqi Tan , Fei Huang , Luo Si , Huajun Chen

Tables are often created with hierarchies, but existing works on table reasoning mainly focus on flat tables and neglect hierarchical tables. Hierarchical tables challenge existing methods by hierarchical indexing, as well as implicit…

Computation and Language · Computer Science 2022-03-29 Zhoujun Cheng , Haoyu Dong , Zhiruo Wang , Ran Jia , Jiaqi Guo , Yan Gao , Shi Han , Jian-Guang Lou , Dongmei Zhang

Scalable interactive visual data exploration is crucial in many domains due to increasingly large datasets generated at rapid rates. Details-on-demand provides a useful interaction paradigm for exploring large datasets, where users start at…

Human-Computer Interaction · Computer Science 2019-05-14 Wenbo Tao , Xiaoyu Liu , Çağatay Demiralp , Remco Chang , Michael Stonebraker

Multi-hop Question Answering (QA) necessitates complex reasoning by integrating multiple pieces of information to resolve intricate questions. However, existing QA systems encounter challenges such as outdated information, context window…

Computation and Language · Computer Science 2024-08-23 Xiaoming Zhang , Ming Wang , Xiaocui Yang , Daling Wang , Shi Feng , Yifei Zhang

While Large Language Models (LLMs) have shown significant potential in assisting peer review, current methods often struggle to generate thorough and insightful reviews while maintaining efficiency. In this paper, we propose TreeReview, a…

Computation and Language · Computer Science 2025-09-10 Yuan Chang , Ziyue Li , Hengyuan Zhang , Yuanbo Kong , Yanru Wu , Hayden Kwok-Hay So , Zhijiang Guo , Liya Zhu , Ngai Wong

Manifestly and logically displaying the line of reasoning from evidence to answer is significant to explainable question answering (QA). The entailment tree exhibits the lines structurally, which is different from the self-explanation…

Computation and Language · Computer Science 2024-09-27 Qin Wang , Jianzhou Feng , Yiming Xu

Retrieval Augmented Generation (RAG) is an essential agent for Large Language Model (LLM) aided Description Language (HDL) tasks, addressing the challenges of limited training data and prohibitively long prompts. However, its performance in…

Hardware Architecture · Computer Science 2026-03-10 Pingqing Zheng , Jiayin Qin , Fuqi Zhang , Niraj Chitla , Zishen Wan , Shang Wu , Yu Cao , Caiwen Ding , Yang , Zhao

The high performance of tree ensemble classifiers benefits from a large set of rules, which, in turn, makes the models hard to understand. To improve interpretability, existing methods extract a subset of rules for approximation using model…

Machine Learning · Computer Science 2025-01-03 Zhen Li , Weikai Yang , Jun Yuan , Jing Wu , Changjian Chen , Yao Ming , Fan Yang , Hui Zhang , Shixia Liu

Exploratory data analysis (EDA), coupled with SQL, is essential for data analysts involved in data exploration and analysis. However, data analysts often encounter two primary challenges: (1) the need to craft SQL queries skillfully, and…

Optimization modeling is one of the most crucial but technical parts of operations research (OR). To automate the modeling process, existing works have leveraged large language models (LLMs), prompting them to break down tasks into steps…

Artificial Intelligence · Computer Science 2025-10-28 Haoyang Liu , Jie Wang , Yuyang Cai , Xiongwei Han , Yufei Kuang , Jianye Hao

Efficiently navigating and understanding academic papers is crucial for scientific progress. Traditional linear formats like PDF and HTML can cause cognitive overload and obscure a paper's hierarchical structure, making it difficult to…

Human-Computer Interaction · Computer Science 2025-07-28 Zijian Zhang , Pan Chen , Fangshi Du , Runlong Ye , Oliver Huang , Michael Liut , Alán Aspuru-Guzik

Complex information needs in real-world search scenarios demand deep reasoning and knowledge synthesis across diverse sources, which traditional retrieval-augmented generation (RAG) pipelines struggle to address effectively. Current…

Artificial Intelligence · Computer Science 2025-11-03 Jiajie Jin , Xiaoxi Li , Guanting Dong , Yuyao Zhang , Yutao Zhu , Yang Zhao , Hongjin Qian , Zhicheng Dou

With the widespread application of electroencephalography (EEG) in neuroscience and clinical practice, efficiently retrieving and semantically interpreting large-scale, multi-source, heterogeneous EEG data has become a pressing challenge.…

Computation and Language · Computer Science 2025-10-14 Yi Wang , Haoran Luo , Lu Meng , Ziyu Jia , Xinliang Zhou , Qingsong Wen

With ever-increasing volume and heterogeneity of data, advent of new specialized compute engines, and demand for complex use cases, large-scale data systems require a performant catalog system that can satisfy diverse needs. We argue that…

Databases · Computer Science 2025-08-11 Keonwoo Oh , Pooja Nilangekar , Amol Deshpande

Recent advancements in language models (LMs) have notably enhanced their ability to reason with tabular data, primarily through program-aided mechanisms that manipulate and analyze tables. However, these methods often require the entire…

Retrieval-Augmented Generation (RAG) has demonstrated significant effectiveness in enhancing large language models (LLMs) for complex multi-hop question answering (QA). For multi-hop QA tasks, current iterative approaches predominantly rely…

Computation and Language · Computer Science 2026-01-19 Yuling Shi , Maolin Sun , Zijun Liu , Mo Yang , Yixiong Fang , Tianran Sun , Xiaodong Gu

How to extract useful insights from data is always a challenge, especially if the data is multidimensional. Often, the data can be organized according to certain hierarchical structure that are stemmed either from data collection process or…

Applications · Statistics 2016-04-21 Kun Yang , Wing Hung Wong