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Retrieving proper domain knowledge from an external database lies at the heart of end-to-end task-oriented dialog systems to generate informative responses. Most existing systems blend knowledge retrieval with response generation and…

Computation and Language · Computer Science 2023-05-18 Fanqi Wan , Weizhou Shen , Ke Yang , Xiaojun Quan , Wei Bi

Large language models (LLMs) have transformed AI research thanks to their powerful internal capabilities and knowledge. However, existing LLMs still fail to effectively incorporate the massive external knowledge when interacting with the…

Computation and Language · Computer Science 2026-04-15 Tao Feng , Pengrui Han , Guanyu Lin , Ge Liu , Jiaxuan You

The Transformer architecture has led to significant gains in machine translation. However, most studies focus on only sentence-level translation without considering the context dependency within documents, leading to the inadequacy of…

Artificial Intelligence · Computer Science 2022-10-21 Yukun Feng , Feng Li , Ziang Song , Boyuan Zheng , Philipp Koehn

Retrieval-Augmented Generation (RAG) is a framework for grounding Large Language Models (LLMs) in external, up-to-date information. However, recent advancements in context window size allow LLMs to process inputs of up to 128K tokens or…

Machine Learning · Computer Science 2026-02-26 Seongwoong Shim , Myunsoo Kim , Jae Hyeon Cho , Byung-Jun Lee

A common way to extend the memory of large language models (LLMs) is by retrieval augmented generation (RAG), which inserts text retrieved from a larger memory into an LLM's context window. However, the context window is typically limited…

Computation and Language · Computer Science 2025-02-14 Marc Pickett , Jeremy Hartman , Ayan Kumar Bhowmick , Raquib-ul Alam , Aditya Vempaty

The primary focus of recent work with largescale transformers has been on optimizing the amount of information packed into the model's parameters. In this work, we ask a different question: Can multimodal transformers leverage explicit…

Computation and Language · Computer Science 2022-05-06 Liangke Gui , Borui Wang , Qiuyuan Huang , Alex Hauptmann , Yonatan Bisk , Jianfeng Gao

Transformer-based models show their effectiveness across multiple domains and tasks. The self-attention allows to combine information from all sequence elements into context-aware representations. However, global and local information has…

Computation and Language · Computer Science 2022-12-09 Aydar Bulatov , Yuri Kuratov , Mikhail S. Burtsev

Large Language Models (LLMs) excel at reasoning and generation but are inherently limited by static pretraining data, resulting in factual inaccuracies and weak adaptability to new information. Retrieval-Augmented Generation (RAG) addresses…

Computation and Language · Computer Science 2025-11-03 Qi Luo , Xiaonan Li , Yuxin Wang , Tingshuo Fan , Yuan Li , Xinchi Chen , Xipeng Qiu

Asking clarifying questions in response to ambiguous or faceted queries has been recognized as a useful technique for various information retrieval systems, especially conversational search systems with limited bandwidth interfaces.…

Information Retrieval · Computer Science 2020-06-16 Helia Hashemi , Hamed Zamani , W. Bruce Croft

Expanding existing learning systems to provide high-quality customized models for more domains, such as new users, is challenged by the limited labeled data and the data and device heterogeneities. While knowledge distillation methods could…

Artificial Intelligence · Computer Science 2025-02-10 Gaole Dai , Huatao Xu , Yifan Yang , Rui Tan , Mo Li

Recent advances in large-scale pre-training such as GPT-3 allow seemingly high quality text to be generated from a given prompt. However, such generation systems often suffer from problems of hallucinated facts, and are not inherently…

Computation and Language · Computer Science 2022-02-25 Yizhe Zhang , Siqi Sun , Xiang Gao , Yuwei Fang , Chris Brockett , Michel Galley , Jianfeng Gao , Bill Dolan

Retrieval augmented models are becoming increasingly popular for computer vision tasks after their recent success in NLP problems. The goal is to enhance the recognition capabilities of the model by retrieving similar examples for the…

Computer Vision and Pattern Recognition · Computer Science 2023-04-12 Ahmet Iscen , Alireza Fathi , Cordelia Schmid

Memory data are ubiquitous in Large Language Model (LLM)-based agents (e.g., OpenClaw and Manus). A few recent works have attempted to exploit agents'memory for improving their performance on the question-answering (QA) task, but they lack…

Computation and Language · Computer Science 2026-05-18 Jiawei Yu , Yixiang Fang , Xilin Liu , Yuchi Ma

Modern approaches to enhancing Large Language Models' factual accuracy and knowledge utilization face a fundamental trade-off: non-parametric retrieval-augmented generation (RAG) provides flexible access to external knowledge but suffers…

Computation and Language · Computer Science 2026-03-02 Rubin Wei , Jiaqi Cao , Jiarui Wang , Jushi Kai , Qipeng Guo , Bowen Zhou , Zhouhan Lin

Retrieval-augmented generation (RAG) methods can enhance the performance of LLMs by incorporating retrieved knowledge chunks into the generation process. In general, the retrieval and generation steps usually have different requirements for…

Information Retrieval · Computer Science 2025-04-16 Peiru Yang , Xintian Li , Zhiyang Hu , Jiapeng Wang , Jinhua Yin , Huili Wang , Lizhi He , Shuai Yang , Shangguang Wang , Yongfeng Huang , Tao Qi

Large transformer-based pre-trained language models have achieved impressive performance on a variety of knowledge-intensive tasks and can capture factual knowledge in their parameters. We argue that storing large amounts of knowledge in…

Computation and Language · Computer Science 2022-08-16 Jivat Neet Kaur , Sumit Bhatia , Milan Aggarwal , Rachit Bansal , Balaji Krishnamurthy

Incremental learning suffers from two challenging problems; forgetting of old knowledge and intransigence on learning new knowledge. Prediction by the model incrementally learned with a subset of the dataset are thus uncertain and the…

Machine Learning · Computer Science 2019-02-05 Dahyun Kim , Jihwan Bae , Yeonsik Jo , Jonghyun Choi

Recent advancements in attention mechanisms have replaced recurrent neural networks and its variants for machine translation tasks. Transformer using attention mechanism solely achieved state-of-the-art results in sequence modeling. Neural…

Computation and Language · Computer Science 2020-04-02 Prakhar Thapak , Prodip Hore

Cross-modal retrieval is gaining increasing efficacy and interest from the research community, thanks to large-scale training, novel architectural and learning designs, and its application in LLMs and multimodal LLMs. In this paper, we move…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Davide Caffagni , Sara Sarto , Marcella Cornia , Lorenzo Baraldi , Rita Cucchiara

Retrieval-Augmented Generation (RAG) enables Large Language Models (LLMs) to extend their existing knowledge by dynamically incorporating external information. However, practical deployment is fundamentally constrained by the LLM's finite…

Information Retrieval · Computer Science 2026-03-24 Jiarui Guo , Yuemeng Xu , Zongwei Lv , Yangyujia Wang , Xiaolin Wang , Kan Liu , Tao Lan , Lin Qu , Tong Yang