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There are two primary ways of incorporating new information into a language model (LM): changing its prompt or changing its parameters, e.g. via fine-tuning. Parameter updates incur no long-term storage cost for model changes. However, for…

Computation and Language · Computer Science 2025-06-27 Eric Zhang , Leshem Choshen , Jacob Andreas

Autoregressive large language models (LLMs) pre-trained by next token prediction are inherently proficient in generative tasks. However, their performance on knowledge-driven tasks such as factual knowledge querying remains unsatisfactory.…

Computation and Language · Computer Science 2026-01-14 Peng Yu , Cheng Deng , Beiya Dai , Xinbing Wang , Ying Wen

Large language models (LLMs) exhibit impressive performance across diverse tasks but often struggle to accurately gauge their knowledge boundaries, leading to confident yet incorrect responses. This paper explores leveraging LLMs' internal…

Computation and Language · Computer Science 2025-06-26 Shiyu Ni , Keping Bi , Jiafeng Guo , Lulu Yu , Baolong Bi , Xueqi Cheng

Recent studies suggest that the deeper layers of Large Language Models (LLMs) contribute little to representation learning and can often be removed without significant performance loss. However, such claims are typically drawn from narrow…

Artificial Intelligence · Computer Science 2026-01-28 Xinyuan Song , Keyu Wang , PengXiang Li , Lu Yin , Shiwei Liu

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

LLMs often generate seemingly valid answers to flawed or ill-posed inputs. This is not due to missing knowledge: under discriminative prompting, the same models can mostly identify such issues, yet fail to reflect this in standard…

Characterizing a large language model's (LLM's) knowledge of a given question is challenging. As a result, prior work has primarily examined LLM behavior under knowledge conflicts, where the model's internal parametric memory contradicts…

Computation and Language · Computer Science 2025-10-17 Yuxin Xiao , Shan Chen , Jack Gallifant , Danielle Bitterman , Thomas Hartvigsen , Marzyeh Ghassemi

Many organizations lack computational resources to fine-tune large language models (LLMs) on private (unshareable) data for better utility, while fine-tuning tiny language models (TinyLMs) alone performs poorly. To address this bottleneck,…

Machine Learning · Computer Science 2026-05-28 Binh-Nguyen Nguyen , Khang Tran , NhatHai Phan , Issa Khalil

Model-free deep reinforcement learning (RL) agents can learn an effective policy directly from repeated interactions with a black-box environment. However in practice, the algorithms often require large amounts of training experience to…

Machine Learning · Computer Science 2020-05-29 Parth Chadha

Despite large language models (LLMs) have achieved impressive achievements across numerous tasks, supervised fine-tuning (SFT) remains essential for adapting these models to specialized domains. However, SFT for domain specialization can be…

Computation and Language · Computer Science 2025-11-13 Yibai Liu , Shihang Wang , Zeming Liu , Zheming Song , Junzhe Wang , Jingjing Liu , Qingjie Liu , Yunhong Wang

Large language models (LLMs) have shown remarkable performances across a wide range of tasks. However, the mechanisms by which these models encode tasks of varying complexities remain poorly understood. In this paper, we explore the…

Computation and Language · Computer Science 2025-02-06 Mingyu Jin , Qinkai Yu , Jingyuan Huang , Qingcheng Zeng , Zhenting Wang , Wenyue Hua , Haiyan Zhao , Kai Mei , Yanda Meng , Kaize Ding , Fan Yang , Mengnan Du , Yongfeng Zhang

The evaluation of large language models (LLMs) relies heavily on standardized benchmarks. These benchmarks provide useful aggregated metrics for a given capability, but those aggregated metrics can obscure (i) particular sub-areas where the…

Computation and Language · Computer Science 2025-12-25 Matyas Bohacek , Nino Scherrer , Nicholas Dufour , Thomas Leung , Christoph Bregler , Stephanie C. Y. Chan

Large Language Models (LLMs) trained on web-scale text corpora have been shown to capture world knowledge in their parameters. However, the mechanism by which language models store different types of knowledge is poorly understood. In this…

Computation and Language · Computer Science 2024-11-08 Jared Fernandez , Yonatan Bisk , Emma Strubell

Self-detection for Large Language Models (LLMs) seeks to evaluate the trustworthiness of the LLM's output by leveraging its own capabilities, thereby alleviating the issue of output hallucination. However, existing self-detection approaches…

Computation and Language · Computer Science 2024-09-30 Moxin Li , Wenjie Wang , Fuli Feng , Fengbin Zhu , Qifan Wang , Tat-Seng Chua

Large language models have demonstrated impressive performance across many domains of mathematics and physics. One natural question is whether such models can support research in highly abstract theoretical fields such as quantum field…

Computational Physics · Physics 2026-04-17 Xingyang Yu , Yinghuan Zhang , Yufei Zhang , Zijun Cui

Recent works have demonstrated that it is possible to reconstruct training images and their labels from gradients of an image-classification model when its architecture is known. Unfortunately, there is still an incomplete theoretical…

Machine Learning · Computer Science 2022-10-25 Cangxiong Chen , Neill D. F. Campbell

Large Language Models (LLMs) often struggle with dynamically changing knowledge and handling unknown static information. Retrieval-Augmented Generation (RAG) is employed to tackle these challenges and has a significant impact on improving…

Computation and Language · Computer Science 2025-09-18 Zhen Zhang , Xinyu Wang , Yong Jiang , Zile Qiao , Zhuo Chen , Guangyu Li , Feiteng Mu , Mengting Hu , Pengjun Xie , Fei Huang

Large Language Models (LLMs) have exhibited impressive generation capabilities, but they suffer from hallucinations when solely relying on their internal knowledge, especially when answering questions that require less commonly known…

Computation and Language · Computer Science 2023-11-01 Wenting Zhao , Ye Liu , Tong Niu , Yao Wan , Philip S. Yu , Shafiq Joty , Yingbo Zhou , Semih Yavuz

Large language models (LLMs) have achieved strong performance across a wide range of natural language processing tasks. However, deploying LLMs at scale for domain specific applications, such as job-person fit and explanation in job seeking…

Large Language Models appear competent when answering general questions but often fail when pushed into domain-specific details. No existing methodology provides an out-of-the-box solution for measuring how deeply LLMs can sustain accurate…

Computation and Language · Computer Science 2026-03-26 Alexander Sheppert