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Retrieval-Augmented Generation systems depend on retrieving semantically relevant document chunks to support accurate, grounded outputs from large language models. In structured and repetitive corpora such as regulatory filings, chunk…

Information Retrieval · Computer Science 2026-01-21 Raquib Bin Yousuf , Shengzhe Xu , Mandar Sharma , Andrew Neeser , Chris Latimer , Naren Ramakrishnan

We consider algorithm selection in the context of ad-hoc information retrieval. Given a query and a pair of retrieval methods, we propose a meta-learner that predicts how to combine the methods' relevance scores into an overall relevance…

Information Retrieval · Computer Science 2019-04-12 Siddhant Arora , Andrew Yates

The interpretation of the experimental data collected by testing systems across input datasets and model parameters is of strategic importance for system design and implementation. In particular, finding relationships between variables and…

Information Retrieval · Computer Science 2018-06-26 Massimo Melucci

For the task of generating complex outputs such as source code, editing existing outputs can be easier than generating complex outputs from scratch. With this motivation, we propose an approach that first retrieves a training example based…

Machine Learning · Statistics 2018-12-05 Tatsunori B. Hashimoto , Kelvin Guu , Yonatan Oren , Percy Liang

The main aim of an information retrieval system is to extract appropriate information from an enormous collection of data based on users need. The basic concept of the information retrieval system is that when a user sends out a query, the…

Information Retrieval · Computer Science 2020-12-17 Abdulmalik Johar

The retrieval phase is a vital component in recommendation systems, requiring the model to be effective and efficient. Recently, generative retrieval has become an emerging paradigm for document retrieval, showing notable performance. These…

Information Retrieval · Computer Science 2024-07-09 Zihua Si , Zhongxiang Sun , Jiale Chen , Guozhang Chen , Xiaoxue Zang , Kai Zheng , Yang Song , Xiao Zhang , Jun Xu , Kun Gai

Intelligently extracting and linking complex scientific information from unstructured text is a challenging endeavor particularly for those inexperienced with natural language processing. Here, we present a simple sequence-to-sequence…

Computation and Language · Computer Science 2022-12-13 Alexander Dunn , John Dagdelen , Nicholas Walker , Sanghoon Lee , Andrew S. Rosen , Gerbrand Ceder , Kristin Persson , Anubhav Jain

We address the task of ranking objects (such as people, blogs, or verticals) that, unlike documents, do not have direct term-based representations. To be able to match them against keyword queries, evidence needs to be amassed from…

Information Retrieval · Computer Science 2017-08-30 Shuo Zhang , Krisztian Balog

In keyword search, when user cannot get what she wants, query refinement is needed and reason can be various. We first give a thorough categorization of the reason, then focus on solving one category of query refinement problem in the…

Databases · Computer Science 2012-11-08 Yong Zeng , Zhifeng Bao , Guoliang Li , Tok Wang Ling , Jiaheng Lu

A lot of advances in the processing of XML data have been proposed in last two decades. There were many approaches focused on the efficient processing of twig pattern queries (TPQ). However, including the TPQ into an XQuery compiler is not…

Databases · Computer Science 2019-03-15 Petr Lukáš , Radim Bača , Michal Krátký

XML data warehouses form an interesting basis for decision-support applications that exploit complex data. However, native-XML database management systems (DBMSs) currently bear limited performances and it is necessary to research for ways…

Databases · Computer Science 2008-09-12 Hadj Mahboubi , Kamel Aouiche , Jérôme Darmont

Retrieval augmentation is critical when Language Models (LMs) exploit non-parametric knowledge related to the query through external knowledge bases before reasoning. The retrieved information is incorporated into LMs as context alongside…

Information Retrieval · Computer Science 2024-11-21 Mingzhu Wang , Yuzhe Zhang , Qihang Zhao , Junyi Yang , Hong Zhang

In information retrieval research, precision and recall have long been used to evaluate IR systems. However, given that a number of retrieval systems resembling one another are already available to the public, it is valuable to retrieve…

Computation and Language · Computer Science 2007-05-23 Atsushi Fujii , Tetsuya Ishikawa

Existing summarization systems mostly generate summaries purely relying on the content of the source document. However, even for humans, we usually need some references or exemplars to help us fully understand the source document and write…

Computation and Language · Computer Science 2021-12-14 Chenxin An , Ming Zhong , Zhichao Geng , Jianqiang Yang , Xipeng Qiu

Information Retrieval systems can be improved by exploiting context information such as user and document features. This article presents a model based on overlapping probabilistic or fuzzy clusters for such features. The model is applied…

Human-Computer Interaction · Computer Science 2011-02-21 Thomas Mandl , Christa Womser-Hacker

Neural networks with deep architectures have demonstrated significant performance improvements in computer vision, speech recognition, and natural language processing. The challenges in information retrieval (IR), however, are different…

Information Retrieval · Computer Science 2021-03-23 Bhaskar Mitra

Modern retrieval systems do not rely on a single ranking model to construct their rankings. Instead, they generally take a cascading approach where a sequence of ranking models are applied in multiple re-ranking stages. Thereby, they…

Information Retrieval · Computer Science 2025-04-17 Harrie Oosterhuis , Rolf Jagerman , Zhen Qin , Xuanhui Wang

Retrieving information from EHR systems is essential for answering specific questions about patient journeys and improving the delivery of clinical care. Despite this fact, most EHR systems still rely on keyword-based searches. With the…

Computation and Language · Computer Science 2024-04-11 Shashi Kant Gupta , Aditya Basu , Bradley Taylor , Anai Kothari , Hrituraj Singh

Clustering web documents has numerous applications, such as aggregating news articles into meaningful events, detecting trends and hot topics on the Web, preserving diversity in search results, etc. At the same time, the importance of named…

Computation and Language · Computer Science 2016-07-19 Matthias Galle , Jean-Michel Renders , Guillaume Jacquet

Classical search engines using indexing methods in data infrastructures primarily allow keyword-based queries to retrieve content. While these indexing-based methods are highly scalable and efficient, due to a lack of an appropriate…

Information Retrieval · Computer Science 2025-09-30 Nafis Tanveer Islam , Zhiming Zhao