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Knowledge Tracing (KT) infers a student's knowledge state from past interactions to predict future performance. Conventional Deep Learning (DL)-based KT models are typically tied to platform-specific identifiers and latent representations,…

Artificial Intelligence · Computer Science 2026-04-23 Zhiyi Duan , Hongyu Yuan , Rui Liu

Large Language Models (LLMs) empower recommendation systems through their advanced reasoning and planning capabilities. However, the dynamic nature of user interests and content poses a significant challenge: While initial fine-tuning…

Information Retrieval · Computer Science 2025-10-24 Changping Meng , Hongyi Ling , Jianling Wang , Yifan Liu , Shuzhou Zhang , Dapeng Hong , Mingyan Gao , Onkar Dalal , Ed Chi , Lichan Hong , Haokai Lu , Ningren Han

Traditional Retrieval-Augmented Generation (RAG) struggles with complex queries that lack strong signals to retrieve the most relevant context, forcing a trade-off between choosing a small context that misses key information and a large…

Computation and Language · Computer Science 2025-11-12 Kushal Chawla , Alfy Samuel , Anoop Kumar , Daben Liu

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

Long text classification is challenging for Large Language Models (LLMs) due to token limits and high computational costs. This study explores whether a Retrieval Augmented Generation (RAG) approach using only the most relevant text…

Retrieval-Augmented Generation (RAG) has emerged as a prominent method for incorporating domain knowledge into Large Language Models (LLMs). While RAG enhances response relevance by incorporating retrieved domain knowledge in the context,…

Computation and Language · Computer Science 2025-03-28 Kushagra Bhushan , Yatin Nandwani , Dinesh Khandelwal , Sonam Gupta , Gaurav Pandey , Dinesh Raghu , Sachindra Joshi

Large language models (LLMs) struggle with relation completion (RC), both with and without retrieval-augmented generation (RAG), particularly when the required information is rare or sparsely represented. To address this, we propose a novel…

Computation and Language · Computer Science 2026-04-27 Fahmida Alam , Mihai Surdeanu , Ellen Riloff

As large language models (LLMs) evolve, their ability to deliver personalized and context-aware responses offers transformative potential for improving user experiences. Existing personalization approaches, however, often rely solely on…

Retrieval-Augmented Generation (RAG) mitigates hallucination in Large Language Models (LLMs) by incorporating external data, with Knowledge Graphs (KGs) offering crucial information for question answering. Traditional Knowledge Graph…

Computation and Language · Computer Science 2025-09-08 Yushi Sun , Kai Sun , Yifan Ethan Xu , Xiao Yang , Xin Luna Dong , Nan Tang , Lei Chen

Large Language Models (LLMs) face challenges in knowledge-intensive reasoning tasks like classic multi-hop question and answering, which involves reasoning across multiple facts. This difficulty arises because the chain of thoughts (CoTs)…

Computation and Language · Computer Science 2025-08-25 Nan Wang , Yongqi Fan , yansha zhu , ZongYu Wang , Xuezhi Cao , Xinyan He , Haiyun Jiang , Tong Ruan , Jingping Liu

Retrieval-Augmented Generation (RAG) improves large language models (LLMs) by retrieving relevant information from external sources and has been widely adopted for text-based tasks. For structured data, such as knowledge graphs, Graph…

Information Retrieval · Computer Science 2026-03-05 Haoyu Han , Li Ma , Yu Wang , Harry Shomer , Yongjia Lei , Zhisheng Qi , Kai Guo , Zhigang Hua , Bo Long , Hui Liu , Charu C. Aggarwal , Jiliang Tang

Retrieval-augmented generation (RAG) improves the response quality of large language models (LLMs) by retrieving knowledge from external databases. Typical RAG approaches split the text database into chunks, organizing them in a flat…

Computation and Language · Computer Science 2025-11-18 Boyu Chen , Zirui Guo , Zidan Yang , Yuluo Chen , Junze Chen , Zhenghao Liu , Chuan Shi , Cheng Yang

In recent years, large language models (LLMs) have made remarkable achievements in various domains. However, the untimeliness and cost of knowledge updates coupled with hallucination issues of LLMs have curtailed their applications in…

Machine Learning · Computer Science 2024-05-31 Chunjing Gan , Dan Yang , Binbin Hu , Hanxiao Zhang , Siyuan Li , Ziqi Liu , Yue Shen , Lin Ju , Zhiqiang Zhang , Jinjie Gu , Lei Liang , Jun Zhou

Retrieval-Augmented Generation (RAG) systems enable large language models (LLMs) instant access to relevant information for the generative process, demonstrating their superior performance in addressing common LLM challenges such as…

Computation and Language · Computer Science 2025-10-17 Yilun Zheng , Dan Yang , Jie Li , Lin Shang , Lihui Chen , Jiahao Xu , Sitao Luan

Large Language Models are now key assistants in human decision-making processes. However, a common note always seems to follow: "LLMs can make mistakes. Be careful with important info." This points to the reality that not all outputs from…

Computation and Language · Computer Science 2025-05-16 Longchao Da , Parth Mitesh Shah , Kuan-Ru Liou , Jiaxing Zhang , Hua Wei

Large language models like ChatGPT are increasingly used in classrooms, but they often provide outdated or fabricated information that can mislead students. Retrieval Augmented Generation (RAG) improves reliability of LLMs by grounding…

Artificial Intelligence · Computer Science 2025-09-10 Amay Jain , Liu Cui , Si Chen

Naive Retrieval-Augmented Generation (RAG) focuses on individual documents during retrieval and, as a result, falls short in handling networked documents which are very popular in many applications such as citation graphs, social media, and…

Machine Learning · Computer Science 2025-07-15 Yuntong Hu , Zhihan Lei , Zheng Zhang , Bo Pan , Chen Ling , Liang Zhao

Large language models (LLMs) have exhibited remarkable few-shot learning capabilities and unified the paradigm of NLP tasks through the in-context learning (ICL) technique. Despite the success of ICL, the quality of the exemplar…

Computation and Language · Computer Science 2024-12-13 Yukang Lin , Bingchen Zhong , Shuoran Jiang , Joanna Siebert , Qingcai Chen

Large Language Models (LLMs) generate fluent answers but can struggle with trustworthy, domain-specific reasoning. We evaluate whether domain knowledge graphs (KGs) improve Retrieval-Augmented Generation (RAG) for healthcare by constructing…

Computation and Language · Computer Science 2026-01-23 Sydney Anuyah , Mehedi Mahmud Kaushik , Hao Dai , Rakesh Shiradkar , Arjan Durresi , Sunandan Chakraborty

Large Language Models (LLMs) have shown remarkable progress in medical question answering (QA), yet their effectiveness remains predominantly limited to English due to imbalanced multilingual training data and scarce medical resources for…