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Large language models (LLMs) are very costly and inefficient to update with new information. To address this limitation, retrieval-augmented generation (RAG) has been proposed as a solution that dynamically incorporates external knowledge…

Computation and Language · Computer Science 2025-07-10 Sezen Perçin , Xin Su , Qutub Sha Syed , Phillip Howard , Aleksei Kuvshinov , Leo Schwinn , Kay-Ulrich Scholl

We evaluate the ability of the current generation of large language models (LLMs) to help a decision-making agent facing an exploration-exploitation tradeoff. While previous work has largely study the ability of LLMs to solve combined…

Machine Learning · Computer Science 2026-02-18 Keegan Harris , Aleksandrs Slivkins

Query Expansion using Pseudo Relevance Feedback is a useful and a popular technique for reformulating the query. In our proposed query expansion method, we assume that relevant information can be found within a document near the central…

Information Retrieval · Computer Science 2015-02-19 Rekha Vaidyanathan , Sujoy Das , Namita Srivastava

Large language models (LLMs) are increasingly used to assign document relevance labels in information retrieval pipelines, especially in domains lacking human-labeled data. However, different models often disagree on borderline cases,…

Information Retrieval · Computer Science 2025-07-04 William A. Ingram , Bipasha Banerjee , Edward A. Fox

The emergence of Large Language Models (LLMs) has boosted performance and possibilities in various NLP tasks. While the usage of generative AI models like ChatGPT opens up new opportunities for several business use cases, their current…

Computation and Language · Computer Science 2023-09-27 Matthias Engelbach , Dennis Klau , Felix Scheerer , Jens Drawehn , Maximilien Kintz

As the applications of large language models (LLMs) expand across diverse fields, the ability of these models to adapt to ongoing changes in data, tasks, and user preferences becomes crucial. Traditional training methods, relying on static…

Machine Learning · Computer Science 2024-06-11 Junhao Zheng , Shengjie Qiu , Chengming Shi , Qianli Ma

Language Models (LMs) memorize a vast amount of factual knowledge, exhibiting strong performance across diverse tasks and domains. However, it has been observed that the performance diminishes when dealing with less-popular or low-frequency…

Computation and Language · Computer Science 2024-12-03 Heydar Soudani , Evangelos Kanoulas , Faegheh Hasibi

Verifiable generation aims to let the large language model (LLM) generate text with supporting documents, which enables the user to flexibly verify the answer and makes the LLM's output more reliable. Retrieval plays a crucial role in…

Computation and Language · Computer Science 2024-03-28 Xiaonan Li , Changtai Zhu , Linyang Li , Zhangyue Yin , Tianxiang Sun , Xipeng Qiu

Pre-trained language models have achieved promising success in code retrieval tasks, where a natural language documentation query is given to find the most relevant existing code snippet. However, existing models focus only on optimizing…

Software Engineering · Computer Science 2022-12-22 Dong Li , Yelong Shen , Ruoming Jin , Yi Mao , Kuan Wang , Weizhu Chen

The proliferation of fake news has had far-reaching implications on politics, the economy, and society at large. While Fake news detection methods have been employed to mitigate this issue, they primarily depend on two essential elements:…

Computation and Language · Computer Science 2024-03-18 Guanghua Li , Wensheng Lu , Wei Zhang , Defu Lian , Kezhong Lu , Rui Mao , Kai Shu , Hao Liao

This paper explores an intriguing observation: fine-tuning a large language model (LLM) with responses generated by a LLM often yields better results than using responses generated by humans, particularly in reasoning tasks. We conduct an…

Computation and Language · Computer Science 2025-12-09 Xuan Ren , Biao Wu , Lingqiao Liu

Large Language Models (LLMs) have shown strong capabilities in document re-ranking, a key component in modern Information Retrieval (IR) systems. However, existing LLM-based approaches face notable limitations, including ranking…

Information Retrieval · Computer Science 2025-10-03 Pinhuan Wang , Zhiqiu Xia , Chunhua Liao , Feiyi Wang , Hang Liu

Retrieval-Augmented Generation (RAG) has become a widely adopted approach to enhance Large Language Models (LLMs) by incorporating external knowledge and reducing hallucinations. However, noisy or irrelevant documents are often introduced…

Computation and Language · Computer Science 2026-01-07 Jingyu Liu , Jiaen Lin , Yong Liu

Text-based recommendation holds a wide range of practical applications due to its versatility, as textual descriptions can represent nearly any type of item. However, directly employing the original item descriptions may not yield optimal…

Computation and Language · Computer Science 2024-04-03 Hanjia Lyu , Song Jiang , Hanqing Zeng , Yinglong Xia , Qifan Wang , Si Zhang , Ren Chen , Christopher Leung , Jiajie Tang , Jiebo Luo

Data augmentation is an essential technique in natural language processing (NLP) for enriching training datasets by generating diverse samples. This process is crucial for improving the robustness and generalization capabilities of NLP…

Computation and Language · Computer Science 2025-10-16 Zaitian Wang , Jinghan Zhang , Xinhao Zhang , Kunpeng Liu , Pengfei Wang , Yuanchun Zhou

Generative large language models (LLMs) are a promising alternative to pre-trained language models for entity matching due to their high zero-shot performance and ability to generalize to unseen entities. Existing research on using LLMs for…

Computation and Language · Computer Science 2025-05-22 Aaron Steiner , Ralph Peeters , Christian Bizer

Although Large Language Models (LLMs) have demonstrated extraordinary capabilities in many domains, they still have a tendency to hallucinate and generate fictitious responses to user requests. This problem can be alleviated by augmenting…

Information Retrieval · Computer Science 2023-06-09 Jiongnan Liu , Jiajie Jin , Zihan Wang , Jiehan Cheng , Zhicheng Dou , Ji-Rong Wen

This study investigates whether repeating questions within prompts influences the performance of large language models (LLMs). We hypothesize that reiterating a question within a single prompt might enhance the model's focus on key elements…

Computation and Language · Computer Science 2025-03-13 Sagi Shaier , Mario Sanz-Guerrero , Katharina von der Wense

Recent studies have found that summaries generated by large language models (LLMs) are favored by human annotators over the original reference summaries in commonly used summarization datasets. Therefore, we study an LLM-as-reference…

Computation and Language · Computer Science 2024-07-19 Yixin Liu , Kejian Shi , Katherine S He , Longtian Ye , Alexander R. Fabbri , Pengfei Liu , Dragomir Radev , Arman Cohan

Large Language Models (LLMs) have shown remarkable capabilities across diverse tasks, yet they face inherent limitations such as constrained parametric knowledge and high retraining costs. Retrieval-Augmented Generation (RAG) augments the…

Information Retrieval · Computer Science 2025-08-26 Leqian Li , Dianxi Shi , Jialu Zhou , Xinyu Wei , Mingyue Yang , Songchang Jin , Shaowu Yang