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Query-focused summarization (QFS) is a fundamental task in natural language processing with broad applications, including search engines and report generation. However, traditional approaches assume the availability of relevant documents,…

计算与语言 · 计算机科学 2024-08-21 Weijia Zhang , Jia-Hong Huang , Svitlana Vakulenko , Yumo Xu , Thilina Rajapakse , Evangelos Kanoulas

Personalized text-to-image generation lets users fine-tune diffusion models into repositories of concept-specific checkpoints, but serving these repositories efficiently is difficult for two reasons: natural-language requests are often…

人工智能 · 计算机科学 2026-03-25 Qirui Wang , Qi Guo , Yiding Sun , Junkai Yang , Dongxu Zhang , Shanmin Pang , Qing Guo

While day-to-day questions come with a variety of answer types, the current question-answering (QA) literature has failed to adequately address the answer diversity of questions. To this end, we present GooAQ, a large-scale dataset with a…

计算与语言 · 计算机科学 2021-09-14 Daniel Khashabi , Amos Ng , Tushar Khot , Ashish Sabharwal , Hannaneh Hajishirzi , Chris Callison-Burch

Retrieval-Augmented Generation (RAG) has recently demonstrated the performance of Large Language Models (LLMs) in the knowledge-intensive tasks such as Question-Answering (QA). RAG expands the query context by incorporating external…

机器学习 · 计算机科学 2024-06-18 Zijian Hei , Weiling Liu , Wenjie Ou , Juyi Qiao , Junming Jiao , Guowen Song , Ting Tian , Yi Lin

One of the exciting capabilities of recent language models for dialog is their ability to independently search for relevant information to ground a given dialog response. However, obtaining training data to teach models how to issue search…

计算与语言 · 计算机科学 2023-12-27 Yonatan Bitton , Shlomi Cohen-Ganor , Ido Hakimi , Yoad Lewenberg , Roee Aharoni , Enav Weinreb

This study introduces Query Attribute Modeling (QAM), a hybrid framework that enhances search precision and relevance by decomposing open text queries into structured metadata tags and semantic elements. QAM addresses traditional search…

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by incorporating external knowledge, but its openness introduces vulnerabilities that can be exploited by poisoning attacks. Existing poisoning methods for RAG…

密码学与安全 · 计算机科学 2025-05-27 Chunyang Li , Junwei Zhang , Anda Cheng , Zhuo Ma , Xinghua Li , Jianfeng Ma

Large language models often encounter challenges with static knowledge and hallucinations, which undermine their reliability. Retrieval-augmented generation (RAG) mitigates these issues by incorporating external information. However, user…

There are three problems existing in the popular data-to-text datasets. First, the large-scale datasets either contain noise or lack real application scenarios. Second, the datasets close to real applications are relatively small in size.…

计算与语言 · 计算机科学 2023-06-21 Liang Li , Ruiying Geng , Chengyang Fang , Bing Li , Can Ma , Rongyu Cao , Binhua Li , Fei Huang , Yongbin Li

Generating knowledge-intensive and comprehensive long texts, such as encyclopedia articles, remains significant challenges for Large Language Models. It requires not only the precise integration of facts but also the maintenance of thematic…

计算与语言 · 计算机科学 2025-03-04 Hongchao Gu , Dexun Li , Kuicai Dong , Hao Zhang , Hang Lv , Hao Wang , Defu Lian , Yong Liu , Enhong Chen

The emergence of LLMs has ignited a fresh surge of breakthroughs in NLP applications, particularly in domains such as question-answering systems and text generation. As the need for longer context grows, a significant bottleneck in model…

计算与语言 · 计算机科学 2024-04-15 Shichen Dong , Wen Cheng , Jiayu Qin , Wei Wang

Retrieval-Augmented Large Language Models (LLMs), which incorporate the non-parametric knowledge from external knowledge bases into LLMs, have emerged as a promising approach to enhancing response accuracy in several tasks, such as…

计算与语言 · 计算机科学 2024-03-29 Soyeong Jeong , Jinheon Baek , Sukmin Cho , Sung Ju Hwang , Jong C. Park

In this paper, we address the problem of answering complex information needs by conversing conversations with search engines, in the sense that users can express their queries in natural language, and directly receivethe information they…

信息检索 · 计算机科学 2021-05-19 Pengjie Ren , Zhumin Chen , Zhaochun Ren , Evangelos Kanoulas , Christof Monz , Maarten de Rijke

Word-Level Auto-Completion (WLAC) plays a crucial role in Computer-Assisted Translation. It aims at providing word-level auto-completion suggestions for human translators. While previous studies have primarily focused on designing complex…

计算与语言 · 计算机科学 2023-10-25 Xingyu Chen , Lemao Liu , Guoping Huang , Zhirui Zhang , Mingming Yang , Shuming Shi , Rui Wang

Question Generation (QG), as a challenging Natural Language Processing task, aims at generating questions based on given answers and context. Existing QG methods mainly focus on building or training models for specific QG datasets. These…

计算与语言 · 计算机科学 2022-12-06 Wei Yuan , Hongzhi Yin , Tieke He , Tong Chen , Qiufeng Wang , Lizhen Cui

Hybrid complex analytics workloads typically include (i) data management tasks (joins, selections, etc. ), easily expressed using relational algebra (RA)-based languages, and (ii) complex analytics tasks (regressions, matrix decompositions,…

数据库 · 计算机科学 2021-03-24 Rana Alotaibi , Bogdan Cautis , Alin Deutsch , Ioana Manolescu

Processing long contexts poses a significant challenge for large language models (LLMs) due to their inherent context-window limitations and the computational burden of extensive key-value (KV) activations, which severely impact efficiency.…

计算与语言 · 计算机科学 2025-05-26 Hongjin Qian , Zheng Liu , Peitian Zhang , Zhicheng Dou , Defu Lian

We propose task-adaptive tokenization as a way to adapt the generation pipeline to the specifics of a downstream task and enhance long-form generation in mental health. Inspired by insights from cognitive science, our task-adaptive…

计算与语言 · 计算机科学 2023-11-14 Siyang Liu , Naihao Deng , Sahand Sabour , Yilin Jia , Minlie Huang , Rada Mihalcea

Organizations handling sensitive documents face a critical dilemma: adopt cloud-based AI systems that offer powerful question-answering capabilities but compromise data privacy, or maintain local processing that ensures security but…

计算与语言 · 计算机科学 2025-12-01 Paolo Astrino

Information retrieval models that aim to search for documents relevant to a query have shown multiple successes, which have been applied to diverse tasks. Yet, the query from the user is oftentimes short, which challenges the retrievers to…

计算与语言 · 计算机科学 2025-09-22 Soyeong Jeong , Jinheon Baek , Sukmin Cho , Sung Ju Hwang , Jong C. Park