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Information retrieval (IR) is essential in search engines and dialogue systems as well as natural language processing tasks such as open-domain question answering. IR serve an important function in the biomedical domain, where content and…

Information Retrieval · Computer Science 2022-01-20 Man Luo , Arindam Mitra , Tejas Gokhale , Chitta Baral

This paper attempts to discuss the evolution of the retrieval approaches focusing on development, challenges and future direction of the image retrieval. It highlights both the already addressed and outstanding issues. The explosive growth…

Information Retrieval · Computer Science 2010-06-24 Hui Hui Wang , Dzulkifli Mohamad , N. A. Ismail

Recent advancements in large language models (LLMs) have significantly enhanced the performance of conversational AI systems. To extend their capabilities to knowledge-intensive domains such as biomedical and legal fields, where the…

Computation and Language · Computer Science 2026-03-10 Hyunseo Shin , Wonseok Hwang

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…

Computation and Language · Computer Science 2024-12-20 Yuan Xia , Jingbo Zhou , Zhenhui Shi , Jun Chen , Haifeng Huang

Retrieval-Augmented Generation (RAG) has emerged as a way to complement the in-context knowledge of Large Language Models (LLMs) by integrating external documents. However, real-world applications demand not only accuracy but also…

Computation and Language · Computer Science 2025-07-31 Kazuki Hayashi , Hidetaka Kamigaito , Shinya Kouda , Taro Watanabe

We consider the problem of creating document representations in which inter-document similarity measurements correspond to semantic similarity. We first present a novel subspace-based framework for formalizing this task. Using this…

Computation and Language · Computer Science 2007-05-23 Rie Kubota Ando , Lillian Lee

In this paper we describe a mechanism to improve Information Retrieval (IR) on the web. The method is based on Formal Concepts Analysis (FCA) that it is makes semantical relations during the queries, and allows a reorganizing, in the shape…

Information Retrieval · Computer Science 2010-03-09 Abderrahim El Qadi , Driss Aboutajedine , Yassine Ennouary

Many Information Retrieval (IR) models make use of offline statistical techniques to score documents for ranking over a single period, rather than use an online, dynamic system that is responsive to users over time. In this paper, we…

Information Retrieval · Computer Science 2013-03-22 Marc Sloan , Jun Wang

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

Information retrieval (IR) systems play a critical role in navigating information overload across various applications. Existing IR benchmarks primarily focus on simple queries that are semantically analogous to single- and multi-hop…

Information Retrieval · Computer Science 2025-11-25 Ganlin Xu , Zhitao Yin , Linghao Zhang , Jiaqing Liang , Weijia Lu , Xiaodong Zhang , Zhifei Yang , Sihang Jiang , Deqing Yang

Document retrieval is one of the best established information retrieval activities since the sixties, pervading all search engines. Its aim is to obtain, from a collection of text documents, those most relevant to a pattern query. Current…

Information Retrieval · Computer Science 2013-10-01 Gonzalo Navarro

Information retrieval is a rapidly evolving field of information retrieval, which is characterized by a continuous refinement of techniques and technologies, from basic hyperlink-based navigation to sophisticated algorithm-driven search…

Information Retrieval · Computer Science 2024-02-09 Dipankar Sarkar

The rapid advancement of Language Model technologies has opened new opportunities, but also introduced new challenges related to bias and fairness. This paper explores the uncharted territory of potential biases in state-of-the-art…

Information Retrieval · Computer Science 2024-12-13 Hongliu Cao

The period from 2019 to the present marks one of the most significant paradigm shifts in information retrieval (IR) and natural language processing (NLP), culminating in the emergence of powerful large language models (LLMs) from 2022…

Information Retrieval · Computer Science 2026-03-17 Zhichao Xu , Fengran Mo , Zhiqi Huang , Crystina Zhang , Puxuan Yu , Bei Wang , Jimmy Lin , Vivek Srikumar

As more content generated by large language models (LLMs) floods into the Internet, information retrieval (IR) systems now face the challenge of distinguishing and handling a blend of human-authored and machine-generated texts. Recent…

Information Retrieval · Computer Science 2025-08-26 Wei Huang , Keping Bi , Yinqiong Cai , Wei Chen , Jiafeng Guo , Xueqi Cheng

In this paper, we propose a new method for query expansion, which uses FarsNet (Persian WordNet) to find similar tokens related to the query and expand the semantic meaning of the query. For this purpose, we use synonymy relations in…

Information Retrieval · Computer Science 2018-11-05 Adel Rahimi , Mohammad Bahrani

The first step to handle semantic heterogeneity should be the attempt to enrich the semantic information about documents, i.e. to fill up the gaps in the documents meta-data automatically. Section 2 describes a set of cascading deductive…

Information Retrieval · Computer Science 2011-02-21 Heiko Hellweg , Jürgen Krause , Thomas Mandl , Jutta Marx , Matthias N. O. Müller , Peter Mutschke , Robert Strötgen

Retrieval based open-domain QA systems use retrieved documents and answer-span selection over retrieved documents to find best-answer candidates. We hypothesize that multilingual Question Answering (QA) systems are prone to information…

Computation and Language · Computer Science 2022-05-26 Shramay Palta , Haozhe An , Yifan Yang , Shuaiyi Huang , Maharshi Gor

Knowledge graphs and large language models (LLMs) are key tools for biomedical knowledge integration and reasoning, facilitating structured organization of scientific articles and discovery of complex semantic relationships. However,…

Computation and Language · Computer Science 2025-04-01 Yichun Feng , Jiawei Wang , Ruikun He , Lu Zhou , Yixue Li

With automated systems increasingly issuing search queries alongside humans, Information Retrieval (IR) faces a major shift. Yet IR remains human-centred, with systems, evaluation metrics, user models, and datasets designed around human…

Information Retrieval · Computer Science 2026-02-20 Francesca Pezzuti , Ophir Frieder , Fabrizio Silvestri , Sean MacAvaney , Nicola Tonellotto