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Graph Retrieval-Augmented Generation (GraphRAG) has proven highly effective in enhancing the performance of Large Language Models (LLMs) on tasks that require external knowledge. By leveraging Knowledge Graphs (KGs), GraphRAG improves…

Artificial Intelligence · Computer Science 2025-11-06 Ruiyi Yang , Hao Xue , Imran Razzak , Hakim Hacid , Flora D. Salim

How can we perform knowledge reasoning over temporal knowledge graphs (TKGs)? TKGs represent facts about entities and their relations, where each fact is associated with a timestamp. Reasoning over TKGs, i.e., inferring new facts from…

Machine Learning · Computer Science 2022-02-17 Namyong Park , Fuchen Liu , Purvanshi Mehta , Dana Cristofor , Christos Faloutsos , Yuxiao Dong

Entity alignment (EA) aims to find the equivalent entity pairs between different knowledge graphs (KGs), which is crucial to promote knowledge fusion. With the wide use of temporal knowledge graphs (TKGs), time-aware EA (TEA) methods appear…

Artificial Intelligence · Computer Science 2023-07-13 Li Cai , Xin Mao , Youshao Xiao , Changxu Wu , Man Lan

Visual Question Answering (VQA) models have achieved significant success in recent times. Despite the success of VQA models, they are mostly black-box models providing no reasoning about the predicted answer, thus raising questions for…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Nihar Bendre , Kevin Desai , Peyman Najafirad

In customer service technical support, swiftly and accurately retrieving relevant past issues is critical for efficiently resolving customer inquiries. The conventional retrieval methods in retrieval-augmented generation (RAG) for large…

Information Retrieval · Computer Science 2024-05-07 Zhentao Xu , Mark Jerome Cruz , Matthew Guevara , Tie Wang , Manasi Deshpande , Xiaofeng Wang , Zheng Li

Distinguished from traditional knowledge graphs (KGs), temporal knowledge graphs (TKGs) must explore and reason over temporally evolving facts adequately. However, existing TKG approaches still face two main challenges, i.e., the limited…

Artificial Intelligence · Computer Science 2024-05-02 Zhiyu Fang , Jingyan Qin , Xiaobin Zhu , Chun Yang , Xu-Cheng Yin

In online learning, the ability to provide quick and accurate feedback to learners is crucial. In skill-based learning, learners need to understand the underlying concepts and mechanisms of a skill to be able to apply it effectively. While…

Artificial Intelligence · Computer Science 2024-08-06 Rochan H. Madhusudhana , Rahul K. Dass , Jeanette Luu , Ashok K. Goel

Table Question Answering (TQA) aims to answer natural language questions about tabular data, often accompanied by additional contexts such as text passages. The task spans diverse settings, varying in table representation, question/answer…

Computation and Language · Computer Science 2026-04-21 Wei Zhou , Bolei Ma , Annemarie Friedrich , Mohsen Mesgar

Reasoning on Temporal Knowledge Graphs (TKGs) is essential for predicting future events and time-aware facts. While existing methods are effective at capturing relational dynamics, their performance is limited by a closed-world assumption,…

Artificial Intelligence · Computer Science 2026-04-14 Ze Zhao , Yuhui He , Lyuwen Wu , Gu Tang , Bin Lu , Xiaoying Gan , Luoyi Fu , Xinbing Wang , Chenghu Zhou

The rapid advancement of Large Language Models (LLMs) and conversational assistants necessitates dynamic, scalable, and configurable conversational datasets for training and evaluation. These datasets must accommodate diverse user…

Computation and Language · Computer Science 2024-08-13 Ronak Pradeep , Daniel Lee , Ali Mousavi , Jeff Pound , Yisi Sang , Jimmy Lin , Ihab Ilyas , Saloni Potdar , Mostafa Arefiyan , Yunyao Li

Commonsense question answering (QA) requires a model to grasp commonsense and factual knowledge to answer questions about world events. Many prior methods couple language modeling with knowledge graphs (KG). However, although a KG contains…

Computation and Language · Computer Science 2021-08-04 Yichong Xu , Chenguang Zhu , Ruochen Xu , Yang Liu , Michael Zeng , Xuedong Huang

Pre-trained language models (PLMs) have shown their effectiveness in multiple scenarios. However, KBQA remains challenging, especially regarding coverage and generalization settings. This is due to two main factors: i) understanding the…

Computation and Language · Computer Science 2022-10-25 Yiheng Shu , Zhiwei Yu , Yuhan Li , Börje F. Karlsson , Tingting Ma , Yuzhong Qu , Chin-Yew Lin

Temporal Knowledge graph completion (TKGC) is a crucial task that involves reasoning at known timestamps to complete the missing part of facts and has attracted more and more attention in recent years. Most existing methods focus on…

Computation and Language · Computer Science 2024-03-05 Wenjie Xu , Ben Liu , Miao Peng , Xu Jia , Min Peng

Knowledge Graphs (KG) act as a great tool for holding distilled information from large natural language text corpora. The problem of natural language querying over knowledge graphs is essential for the human consumption of this information.…

Machine Learning · Computer Science 2021-12-22 Aayushee Gupta , K. M. Annervaz , Ambedkar Dukkipati , Shubhashis Sengupta

Accurately predicting the behavior of complex dynamical systems, characterized by high-dimensional multivariate time series(MTS) in interconnected sensor networks, is crucial for informed decision-making in various applications to minimize…

Machine Learning · Computer Science 2024-08-23 Sagar Srinivas Sakhinana , Krishna Sai Sudhir Aripirala , Shivam Gupta , Venkataramana Runkana

In order to facilitate natural language understanding, the key is to engage commonsense or background knowledge. However, how to engage commonsense effectively in question answering systems is still under exploration in both research…

Computation and Language · Computer Science 2020-11-06 Qianglong Chen , Feng Ji , Haiqing Chen , Yin Zhang

Gait emotion recognition plays a crucial role in the intelligent system. Most of the existing methods recognize emotions by focusing on local actions over time. However, they ignore that the effective distances of different emotions in the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Yunfei Yin , Li Jing , Faliang Huang , Guangchao Yang , Zhuowei Wang

Agents in partially observable environments require persistent memory to integrate observations over time. While KGs (knowledge graphs) provide a natural representation for such evolving state, existing benchmarks rarely expose agents to…

Artificial Intelligence · Computer Science 2026-02-26 Taewoon Kim , Vincent François-Lavet , Michael Cochez

Time-evolving traffic flow forecasting are playing a vital role in intelligent transportation systems and smart cities. However, the dynamic traffic flow forecasting is a highly nonlinear problem with complex temporal-spatial dependencies.…

Machine Learning · Computer Science 2025-08-05 Zhenan Lin , Yuni Lai , Wai Lun Lo , Richard Tai-Chiu Hsung , Harris Sik-Ho Tsang , Xiaoyu Xue , Kai Zhou , Yulin Zhu

Multimodal sentiment analysis (MSA) leverages information fusion from diverse modalities (e.g., text, audio, visual) to enhance sentiment prediction. However, simple fusion techniques often fail to account for variations in modality…

Machine Learning · Computer Science 2025-10-03 Han Wu , Yanming Sun , Yunhe Yang , Derek F. Wong