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While hallucinations of large language models could been alleviated through retrieval-augmented generation and citation generation, how the model utilizes internal knowledge is still opaque, and the trustworthiness of its generated answers…

Computation and Language · Computer Science 2025-04-22 Jiajun Shen , Tong Zhou , Yubo Chen , Delai Qiu , Shengping Liu , Kang Liu , Jun Zhao

Large Language Models (LLMs) are adept at generating responses based on information within their context. While this ability is useful for interacting with structured data like code files, another popular method, Retrieval-Augmented…

Computation and Language · Computer Science 2025-10-22 Mihir Gupte , Paolo Giusto , Ramesh S

Retrieval augmented generation (RAG) systems provide a method for factually grounding the responses of a Large Language Model (LLM) by providing retrieved evidence, or context, as support. Guided by this context, RAG systems can reduce…

Information Retrieval · Computer Science 2025-09-05 Shakiba Amirshahi , Amin Bigdeli , Charles L. A. Clarke , Amira Ghenai

Randomized experiments or randomized controlled trials (RCTs) are gold standards for causal inference, yet cost and sample-size constraints limit power. We introduce CALM (Causal Analysis leveraging Language Models), a statistical framework…

Methodology · Statistics 2025-12-09 Xinrui Ruan , Xinwei Ma , Yingfei Wang , Waverly Wei , Jingshen Wang

Large language models (LLMs) have demonstrated impressive capabilities in various reasoning tasks, aided by techniques like chain-of-thought prompting that elicits verbalized reasoning. However, LLMs often generate text with obvious…

Artificial Intelligence · Computer Science 2024-12-06 Zhihui Xie , Jizhou Guo , Tong Yu , Shuai Li

Large Language Models (LLMs) are increasingly used for accessing information on the web. Their truthfulness and factuality are thus of great interest. To help users make the right decisions about the information they get, LLMs should not…

Computation and Language · Computer Science 2024-04-03 Chenglei Si , Navita Goyal , Sherry Tongshuang Wu , Chen Zhao , Shi Feng , Hal Daumé , Jordan Boyd-Graber

Large Language Models (LLMs) show remarkable capabilities, yet their stochastic next-token prediction creates logical inconsistencies and reward hacking that formal symbolic systems avoid. To bridge this gap, we introduce a formal logic…

Machine Learning · Computer Science 2026-02-02 Chuxue Cao , Jinluan Yang , Haoran Li , Kunhao Pan , Zijian Zhao , Zhengyu Chen , Yuchen Tian , Lijun Wu , Conghui He , Sirui Han , Yike Guo

Knowledge gaps and hallucinations are persistent challenges for Large Language Models (LLMs), which generate unreliable responses when lacking the necessary information to fulfill user instructions. Existing approaches, such as…

Computation and Language · Computer Science 2025-11-20 Riccardo Pozzi , Matteo Palmonari , Andrea Coletta , Luigi Bellomarini , Jens Lehmann , Sahar Vahdati

Large language models (LLMs) exhibit remarkable capabilities but often produce inaccurate responses, as they rely solely on their embedded knowledge. Retrieval-Augmented Generation (RAG) enhances LLMs by incorporating an external…

Computation and Language · Computer Science 2024-09-25 Nitin Aravind Birur , Tanay Baswa , Divyanshu Kumar , Jatan Loya , Sahil Agarwal , Prashanth Harshangi

Retrieval Augmented Generation (RAG), a paradigm that integrates external contextual information with large language models (LLMs) to enhance factual accuracy and relevance, has emerged as a pivotal area in generative AI. The LLMs used in…

Computation and Language · Computer Science 2024-09-17 Xuan-Phi Nguyen , Shrey Pandit , Senthil Purushwalkam , Austin Xu , Hailin Chen , Yifei Ming , Zixuan Ke , Silvio Savarese , Caiming Xong , Shafiq Joty

Users often ask dialogue systems ambiguous questions that require clarification. We show that current language models rarely ask users to clarify ambiguous questions and instead provide incorrect answers. To address this, we introduce CLAM:…

Computation and Language · Computer Science 2023-02-21 Lorenz Kuhn , Yarin Gal , Sebastian Farquhar

Large Language Models (LLMs) have recently emerged as a powerful paradigm for Knowledge Graph Completion (KGC), offering strong reasoning and generalization capabilities beyond traditional embedding-based approaches. However, existing…

Computation and Language · Computer Science 2025-10-14 Wenbin Guo , Xin Wang , Jiaoyan Chen , Lingbing Guo , Zhao Li , Zirui Chen

Retrieval-Augmented Generation (RAG) couples document retrieval with large language models (LLMs). While scaling generators often improves accuracy, it also increases inference and deployment overhead. We study an orthogonal axis: enlarging…

Information Retrieval · Computer Science 2026-04-29 Jingjie Ning , Yibo Kong , Yunfan Long , Jamie Callan

It is important for Large Language Models (LLMs) to be aware of the boundary of their knowledge, distinguishing queries they can confidently answer from those that lie beyond their capabilities. Such awareness enables models to perform…

Computation and Language · Computer Science 2026-03-05 Lihu Chen , Gerard de Melo , Fabian M. Suchanek , Gaël Varoquaux

Language models (LMs) are known to suffer from hallucinations and misinformation. Retrieval augmented generation (RAG) that retrieves verifiable information from an external knowledge corpus to complement the parametric knowledge in LMs…

Computation and Language · Computer Science 2024-10-14 Zhuohang Li , Jiaxin Zhang , Chao Yan , Kamalika Das , Sricharan Kumar , Murat Kantarcioglu , Bradley A. Malin

Large Language Models (LLMs) and pre-trained Language Models (LMs) have achieved impressive success on many software engineering tasks (e.g., code completion and code generation). By leveraging huge existing code corpora (e.g., GitHub),…

Software Engineering · Computer Science 2025-01-16 Xin Yin , Chao Ni , Xiaodan Xu , Xinrui Li , Xiaohu Yang

Accurate and contextually faithful responses are critical when applying large language models (LLMs) to sensitive and domain-specific tasks, such as answering queries related to quranic studies. General-purpose LLMs often struggle with…

Computation and Language · Computer Science 2025-03-24 Zahra Khalila , Arbi Haza Nasution , Winda Monika , Aytug Onan , Yohei Murakami , Yasir Bin Ismail Radi , Noor Mohammad Osmani

The advent of Large Language Models (LLMs) has shown the potential to improve relevance and provide direct answers in web searches. However, challenges arise in validating the reliability of generated results and the credibility of…

Information Retrieval · Computer Science 2023-10-20 Xiang Shi , Jiawei Liu , Yinpeng Liu , Qikai Cheng , Wei Lu

Recent works successfully leveraged Large Language Models' (LLM) abilities to capture abstract knowledge about world's physics to solve decision-making problems. Yet, the alignment between LLMs' knowledge and the environment can be wrong…

Machine Learning · Computer Science 2026-02-02 Thomas Carta , Clément Romac , Thomas Wolf , Sylvain Lamprier , Olivier Sigaud , Pierre-Yves Oudeyer

Pre-trained large language models (PLMs) underlie most new developments in natural language processing. They have shifted the field from application-specific model pipelines to a single model that is adapted to a wide range of tasks.…

Computation and Language · Computer Science 2023-06-30 Joshua Maynez , Priyanka Agrawal , Sebastian Gehrmann