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Typically, information extraction (IE) requires a pipeline approach: first, a sequence labeling model is trained on manually annotated documents to extract relevant spans; then, when a new document arrives, a model predicts spans which are…

计算与语言 · 计算机科学 2021-10-12 Benjamin Townsend , Eamon Ito-Fisher , Lily Zhang , Madison May

Hallucination, the generation of factually incorrect information, remains a significant challenge for large language models (LLMs), especially in open-domain long-form generation. Existing approaches for detecting hallucination in long-form…

Question-answering (QA) is an important application of Information Retrieval (IR) and language models, and the latest trend is toward pre-trained large neural networks with embedding parameters. Augmenting QA performances with these LLMs…

信息检索 · 计算机科学 2024-11-05 Lixiao Yang , Mengyang Xu , Weimao Ke

Large Language Models (LLMs) have garnered widespread attention due to their remarkable performance across various tasks. However, to mitigate the issue of hallucinations, LLMs often incorporate retrieval-augmented pipeline to provide them…

计算与语言 · 计算机科学 2024-08-29 Haowen Hou , Fei Ma , Binwen Bai , Xinxin Zhu , Fei Yu

The Retrieval-Augmented Language Model (RALM) has shown remarkable performance on knowledge-intensive tasks by incorporating external knowledge during inference, which mitigates the factual hallucinations inherited in large language models…

计算与语言 · 计算机科学 2024-12-20 Yuan Xia , Jingbo Zhou , Zhenhui Shi , Jun Chen , Haifeng Huang

Knowledge-intensive multi-hop question answering (QA) tasks, which require integrating evidence from multiple sources to address complex queries, often necessitate multiple rounds of retrieval and iterative generation by large language…

计算与语言 · 计算机科学 2025-06-24 Binquan Ji , Haibo Luo , Yifei Lu , Lei Hei , Jiaqi Wang , Tingjing Liao , Lingyu Wang , Shichao Wang , Feiliang Ren

Recently, retrieval systems based on dense representations have led to important improvements in open-domain question answering, and related tasks. While very effective, this approach is also memory intensive, as the dense vectors for the…

计算与语言 · 计算机科学 2021-01-01 Gautier Izacard , Fabio Petroni , Lucas Hosseini , Nicola De Cao , Sebastian Riedel , Edouard Grave

Search result diversification is a beneficial approach to overcome under-specified queries, such as those that are ambiguous or multi-faceted. Existing approaches often rely on massive query logs and interaction data to generate a variety…

信息检索 · 计算机科学 2021-08-10 Sean MacAvaney , Craig Macdonald , Roderick Murray-Smith , Iadh Ounis

Pairing a lexical retriever with a neural re-ranking model has set state-of-the-art performance on large-scale information retrieval datasets. This pipeline covers scenarios like question answering or navigational queries, however, for…

信息检索 · 计算机科学 2022-10-20 Tim Baumgärtner , Leonardo F. R. Ribeiro , Nils Reimers , Iryna Gurevych

Advanced reasoning capabilities in Large Language Models (LLMs) have led to more frequent hallucinations; yet most mitigation work focuses on open-source models for post-hoc detection and parameter editing. The dearth of studies focusing on…

计算与语言 · 计算机科学 2026-02-25 Nicole Cho , William Watson , Alec Koppel , Sumitra Ganesh , Manuela Veloso

Large Language Models (LLMs) are foundational in language technologies, particularly in information retrieval (IR). Previous studies have utilized LLMs for query expansion, achieving notable improvements in IR. In this paper, we thoroughly…

信息检索 · 计算机科学 2024-07-02 Le Zhang , Yihong Wu , Qian Yang , Jian-Yun Nie

Despite considerable progress in neural relevance ranking techniques, search engines still struggle to process complex queries effectively - both in terms of precision and recall. Sparse and dense Pseudo-Relevance Feedback (PRF) approaches…

信息检索 · 计算机科学 2023-12-06 Iain Mackie , Shubham Chatterjee , Sean MacAvaney , Jeffrey Dalton

Using top-ranked documents in response to a query has been shown to be an effective approach to improve the quality of query translation in dictionary-based cross-language information retrieval. In this paper, we propose a new method for…

Hallucination is a key roadblock for applications of Large Language Models (LLMs), particularly for enterprise applications that are sensitive to information accuracy. To address this issue, two general approaches have been explored:…

计算与语言 · 计算机科学 2024-10-15 Xinxi Chen , Li Wang , Wei Wu , Qi Tang , Yiyao Liu

Attribution is a key concept in large language models (LLMs) as it enables control over information sources and enhances the factuality of LLMs. While existing approaches utilize open book question answering to improve attribution, factual…

计算与语言 · 计算机科学 2023-11-14 Abdullatif Köksal , Renat Aksitov , Chung-Ching Chang

Large Language Models (LLMs) are widely used in critical fields such as healthcare, education, and finance due to their remarkable proficiency in various language-related tasks. However, LLMs are prone to generating factually incorrect…

We address the problem of retrieving relevant experiments given a query experiment, motivated by the public databases of datasets in molecular biology and other experimental sciences, and the need of scientists to relate to earlier work on…

机器学习 · 统计学 2014-03-10 Ritabrata Dutta , Sohan Seth , Samuel Kaski

The cost-effective visual representation and fast query-by-example search are two challenging goals that should be maintained for web-scale visual retrieval tasks on moderate hardware. This paper introduces a fast and robust method that…

计算机视觉与模式识别 · 计算机科学 2020-12-15 Savas Ozkan , Gozde Bozdagi Akar

Large language models (LLMs) can generate fluent natural language texts when given relevant documents as background context. This ability has attracted considerable interest in developing industry applications of LLMs. However, LLMs are…

计算与语言 · 计算机科学 2023-10-11 Deren Lei , Yaxi Li , Mengya Hu , Mingyu Wang , Vincent Yun , Emily Ching , Eslam Kamal

Current text-video retrieval methods mainly rely on cross-modal matching between queries and videos to calculate their similarity scores, which are then sorted to obtain retrieval results. This method considers the matching between each…

计算机视觉与模式识别 · 计算机科学 2024-08-22 Yili Li , Jing Yu , Keke Gai , Bang Liu , Gang Xiong , Qi Wu