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Memory plays a central role in enabling large language models (LLMs) to operate over sequential tasks by accumulating and reusing experience over time. However, existing evaluations of LLM memory mostly rely on aggregate metrics such as…

Machine Learning · Computer Science 2026-05-18 Songwei Dong , Zihan Chen , Chengshuai Shi , Peng Wang , Jundong Li , Cong Shen

Recent conversational memory systems invest heavily in LLM-based structuring at ingestion time and learned retrieval policies at query time. We show that neither is necessary. SmartSearch retrieves from raw, unstructured conversation…

Machine Learning · Computer Science 2026-03-17 Jesper Derehag , Carlos Calva , Timmy Ghiurau

Personalized large language models (LLMs) rely on memory retrieval to incorporate user-specific histories, preferences, and contexts. Existing approaches either overload the LLM by feeding all the user's past memory into the prompt, which…

Information Retrieval · Computer Science 2026-03-11 Yingyi Zhang , Junyi Li , Wenlin Zhang , Penyue Jia , Xianneng Li , Yichao Wang , Derong Xu , Yi Wen , Huifeng Guo , Yong Liu , Xiangyu Zhao

Long-term memory is increasingly important for personalized AI agents, yet existing benchmarks and methods remain largely text-centric. Even when images are included, the user-specific information needed for later questions is typically…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Viet Nguyen , Thao Nguyen , Vishal M. Patel , Yuheng Li

Although Transformers with fully connected self-attentions are powerful to model long-term dependencies, they are struggling to scale to long texts with thousands of words in language modeling. One of the solutions is to equip the model…

Computation and Language · Computer Science 2022-04-27 Haozhe Ji , Rongsheng Zhang , Zhenyu Yang , Zhipeng Hu , Minlie Huang

Large Language Model (LLM)-based web agents excel at knowledge-intensive tasks but face a fundamental conflict between the need for extensive exploration and the constraints of limited context windows. Current solutions typically rely on…

The emergence of Large Language Models (LLMs) has significantly advanced natural language processing, but these models often generate factually incorrect information, known as "hallucination". Initial retrieval-augmented generation (RAG)…

Computation and Language · Computer Science 2024-11-12 Yujia Zhou , Zheng Liu , Zhicheng Dou

To deliver coherent and personalized experiences in long-term conversations, existing approaches typically perform retrieval augmented response generation by constructing memory banks from conversation history at either the turn-level,…

Computation and Language · Computer Science 2025-03-04 Zhuoshi Pan , Qianhui Wu , Huiqiang Jiang , Xufang Luo , Hao Cheng , Dongsheng Li , Yuqing Yang , Chin-Yew Lin , H. Vicky Zhao , Lili Qiu , Jianfeng Gao

Large language model (LLM)-powered multi-agent systems (MAS) demonstrate remarkable collective intelligence, wherein multi-agent memory serves as a pivotal mechanism for continual adaptation. However, existing multi-agent memory designs…

Computation and Language · Computer Science 2026-03-10 Muxin Fu , Xiangyuan Xue , Yafu Li , Zefeng He , Siyuan Huang , Xiaoye Qu , Yu Cheng , Yang Yang

The Transformer architecture, underpinned by the self-attention mechanism, has become the de facto standard for sequence modeling tasks. However, its core computational primitive scales quadratically with sequence length (O(N^2)), creating…

Computation and Language · Computer Science 2025-09-03 Rishiraj Acharya

Retrieval-augmented Large Language Models (LLMs) have reshaped traditional query-answering systems, offering unparalleled user experiences. However, existing retrieval techniques often struggle to handle multi-modal query contexts. In this…

Databases · Computer Science 2024-07-08 Mengzhao Wang , Haotian Wu , Xiangyu Ke , Yunjun Gao , Xiaoliang Xu , Lu Chen

In this work, we introduce the Keep Emotional and Essential Memory (KEEM) dataset, a novel generation-based dataset designed to enhance memory updates in long-term conversational systems. Unlike existing approaches that rely on simple…

Computation and Language · Computer Science 2026-01-12 Jeonghyun Kang , Hongjin Kim , Harksoo Kim

Since the pre-trained language models are widely used, retrieval-based open-domain dialog systems, have attracted considerable attention from researchers recently. Most of the previous works select a suitable response only according to the…

Computation and Language · Computer Science 2020-12-22 Tian Lan , Xian-Ling Mao , Zhipeng Zhao , Wei Wei , Heyan Huang

Long-term memory is a cornerstone of human intelligence. Enabling AI to process lifetime-scale information remains a long-standing pursuit in the field. Due to the constraints of full-attention architectures, the effective context length of…

Computation and Language · Computer Science 2026-04-14 Yu Chen , Runkai Chen , Sheng Yi , Xinda Zhao , Xiaohong Li , Jianjin Zhang , Jun Sun , Chuanrui Hu , Yunyun Han , Lidong Bing , Yafeng Deng , Tianqiao Chen

While large language models now handle million-token contexts, their capacity for reasoning across entire document repositories remains largely untested. Existing benchmarks are inadequate, as they are mostly limited to single long texts or…

Computation and Language · Computer Science 2026-04-28 Zhiyuan Lu , Chenliang Li , Yingcheng Shi , Weizhou Shen , Ming Yan , Fei Huang

Long-term memory is essential for large language model (LLM) agents operating in complex environments, yet existing memory designs are either task-specific and non-transferable, or task-agnostic but less effective due to low task-relevance…

Computation and Language · Computer Science 2026-03-05 Ke Yang , Zixi Chen , Xuan He , Jize Jiang , Michel Galley , Chenglong Wang , Jianfeng Gao , Jiawei Han , ChengXiang Zhai

In recent years, we have observed a rapid advancement in speech language models (SpeechLLMs), catching up with humans' listening and reasoning abilities. SpeechLLMs have demonstrated impressive spoken dialog question-answering (SQA)…

Computation and Language · Computer Science 2024-10-03 Junkai Wu , Xulin Fan , Bo-Ru Lu , Xilin Jiang , Nima Mesgarani , Mark Hasegawa-Johnson , Mari Ostendorf

In this paper, we propose a novel Automatic and Scalable Face Detector (ASFD), which is based on a combination of neural architecture search techniques as well as a new loss design. First, we propose an automatic feature enhance module…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Bin Zhang , Jian Li , Yabiao Wang , Ying Tai , Chengjie Wang , Jilin Li , Feiyue Huang , Yili Xia , Wenjiang Pei , Rongrong Ji

Although deep learning (DL) has achieved notable progress in speech enhancement (SE), further research is still required for a DL-based SE system to adapt effectively and efficiently to particular speakers. In this study, we propose a novel…

Audio and Speech Processing · Electrical Eng. & Systems 2021-11-11 Cheng Yu , Szu-Wei Fu , Tsun-An Hsieh , Yu Tsao , Mirco Ravanelli

Conversational speech normally is embodied with loose syntactic structures at the utterance level but simultaneously exhibits topical coherence relations across consecutive utterances. Prior work has shown that capturing longer context…

Computation and Language · Computer Science 2022-06-02 Bi-Cheng Yan , Hsin-Wei Wang , Shih-Hsuan Chiu , Hsuan-Sheng Chiu , Berlin Chen