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Previous work has showcased the intriguing capability of large language models (LLMs) in retrieving facts and processing context knowledge. However, only limited research exists on the layer-wise capability of LLMs to encode knowledge,…

Computation and Language · Computer Science 2024-03-05 Tianjie Ju , Weiwei Sun , Wei Du , Xinwei Yuan , Zhaochun Ren , Gongshen Liu

Publicly available, large pretrained LanguageModels (LMs) generate text with remarkable quality, but only sequentially from left to right. As a result, they are not immediately applicable to generation tasks that break the unidirectional…

Computation and Language · Computer Science 2021-12-28 Peter West , Ximing Lu , Ari Holtzman , Chandra Bhagavatula , Jena Hwang , Yejin Choi

The emergence of large language models (LLMs) has revolutionized machine learning and related fields, showcasing remarkable abilities in comprehending, generating, and manipulating human language. However, their conventional usage through…

Computation and Language · Computer Science 2024-04-18 Andrea Bacciu , Florin Cuconasu , Federico Siciliano , Fabrizio Silvestri , Nicola Tonellotto , Giovanni Trappolini

Large language models (LLMs) have become ubiquitous in practice and are widely used for generation tasks such as translation, summarization and instruction following. However, their enormous size and reliance on autoregressive decoding…

Machine Learning · Computer Science 2024-07-18 Benjamin Bergner , Andrii Skliar , Amelie Royer , Tijmen Blankevoort , Yuki Asano , Babak Ehteshami Bejnordi

Conventional research on large language models (LLMs) has primarily focused on refining output distributions, while paying less attention to the decoding process that transforms these distributions into final responses. Recent advances,…

Computation and Language · Computer Science 2025-10-28 Chenheng Zhang , Tianqi Du , Jizhe Zhang , Mingqing Xiao , Yifei Wang , Yisen Wang , Zhouchen Lin

Large Language Models (LLMs) are increasingly prevalent in the field of long-context modeling, however, their inference computational costs have become a critical bottleneck hindering the advancement of tasks such as agents and multimodal…

Computation and Language · Computer Science 2025-12-04 Di Xiu , Hongyin Tang , Bolin Rong , Lizhi Yan , Jingang Wang , Yifan Lu , Xunliang Cai

Although Retrieval-Augmented Large Language Models (RALMs) demonstrate their superiority in terms of factuality, they do not consistently outperform the original retrieval-free Language Models (LMs). Our experiments reveal that this…

Artificial Intelligence · Computer Science 2025-03-07 Mingda Li , Xinyu Li , Yifan Chen , Wenfeng Xuan , Weinan Zhang

Retrieving documents and prepending them in-context at inference time improves performance of language model (LMs) on a wide range of tasks. However, these documents, often spanning hundreds of words, make inference substantially more…

Computation and Language · Computer Science 2023-10-09 Fangyuan Xu , Weijia Shi , Eunsol Choi

Retrieval-Augmented Language Modeling (RALM) methods, which condition a language model (LM) on relevant documents from a grounding corpus during generation, were shown to significantly improve language modeling performance. In addition,…

Computation and Language · Computer Science 2023-08-02 Ori Ram , Yoav Levine , Itay Dalmedigos , Dor Muhlgay , Amnon Shashua , Kevin Leyton-Brown , Yoav Shoham

Dense retrieval (DR) has shown promising results in information retrieval. In essence, DR requires high-quality text representations to support effective search in the representation space. Recent studies have shown that pre-trained…

Information Retrieval · Computer Science 2022-08-23 Xinyu Ma , Ruqing Zhang , Jiafeng Guo , Yixing Fan , Xueqi Cheng

Large language models (LLMs) augmented with retrieval exhibit robust performance and extensive versatility by incorporating external contexts. However, the input length grows linearly in the number of retrieved documents, causing a dramatic…

Computation and Language · Computer Science 2024-05-28 Yun Zhu , Jia-Chen Gu , Caitlin Sikora , Ho Ko , Yinxiao Liu , Chu-Cheng Lin , Lei Shu , Liangchen Luo , Lei Meng , Bang Liu , Jindong Chen

Current Large Language Models (LLMs) face inherent limitations due to their pre-defined context lengths, which impede their capacity for multi-hop reasoning within extensive textual contexts. While existing techniques like…

Computation and Language · Computer Science 2024-06-19 Weizhi Fei , Xueyan Niu , Guoqing Xie , Yanhua Zhang , Bo Bai , Lei Deng , Wei Han

Retrieval-augmented large language models (LLMs) leverage relevant content retrieved by information retrieval systems to generate correct responses, aiming to alleviate the hallucination problem. However, existing retriever-responder…

Computation and Language · Computer Science 2024-06-26 Taolin Zhang , Dongyang Li , Qizhou Chen , Chengyu Wang , Longtao Huang , Hui Xue , Xiaofeng He , Jun Huang

In large language models (LLMs), each block operates on the residual stream to map input token sequences to output token distributions. However, most of the interpretability literature focuses on internal latent representations, leaving…

Machine Learning · Computer Science 2026-02-03 Riccardo Ali , Francesco Caso , Christopher Irwin , Pietro Liò

Large language models (LLMs), despite their impressive performance across a wide range of tasks, often struggle to balance two competing objectives in open-ended text generation: fostering diversity and creativity while preserving logical…

Computation and Language · Computer Science 2026-05-12 Erfan Baghaei Potraghloo , Seyedarmin Azizi , Souvik Kundu , Massoud Pedram

Autoregressive decoding of large language models (LLMs) is memory bandwidth bounded, resulting in high latency and significant wastes of the parallel processing power of modern accelerators. Existing methods for accelerating LLM decoding…

Machine Learning · Computer Science 2024-02-06 Yichao Fu , Peter Bailis , Ion Stoica , Hao Zhang

Large Language Models (LLMs) are traditionally viewed as black-box algorithms, therefore reducing trustworthiness and obscuring potential approaches to increasing performance on downstream tasks. In this work, we apply an effective LLM…

Computation and Language · Computer Science 2025-07-10 Shun Wang , Tyler Loakman , Youbo Lei , Yi Liu , Bohao Yang , Yuting Zhao , Dong Yang , Chenghua Lin

This paper presents a modular approach to accelerate inference in large language models (LLMs) by adding early exit heads at intermediate transformer layers. Each head is trained in a self-supervised manner to mimic the main model's…

Computation and Language · Computer Science 2026-02-13 Florian Valade

Large Language Models (LLMs) demonstrate remarkable capabilities, yet struggle with hallucination and outdated knowledge when tasked with complex knowledge reasoning, resulting in factually incorrect outputs. Previous studies have attempted…

Computation and Language · Computer Science 2025-01-07 Derong Xu , Xinhang Li , Ziheng Zhang , Zhenxi Lin , Zhihong Zhu , Zhi Zheng , Xian Wu , Xiangyu Zhao , Tong Xu , Enhong Chen

Pretrained large Language Models (LLMs) are able to answer questions that are unlikely to have been encountered during training. However a diversity of potential applications exist in the broad domain of reasoning systems and considerations…

Computation and Language · Computer Science 2024-11-27 Tim Hartill