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Sentiment Analysis is a branch of Affective Computing usually considered a binary classification task. In this line of reasoning, Sentiment Analysis can be applied in several contexts to classify the attitude expressed in text samples, for…

Information Retrieval · Computer Science 2020-08-13 Flavio Carvalho , Gustavo Paiva Guedes

Web archiving is the process of collecting portions of the Web to ensure that the information is preserved for future exploitation. However, despite the increasing number of web archives worldwide, the absence of efficient and meaningful…

Digital Libraries · Computer Science 2018-10-25 Pavlos Fafalios , Helge Holzmann , Vaibhav Kasturia , Wolfgang Nejdl

In this paper, we propose an alternative to deep neural networks for semantic information retrieval for the case of long documents. This new approach exploiting clustering techniques to take into account the meaning of words in Information…

Information Retrieval · Computer Science 2025-07-29 Paul Mbathe Mekontchou , Armel Fotsoh , Bernabe Batchakui , Eddy Ella

The advent of Large Language Models (LLMs) heralds a pivotal shift in online user interactions with information. Traditional Information Retrieval (IR) systems primarily relied on query-document matching, whereas LLMs excel in comprehending…

Information Retrieval · Computer Science 2023-11-22 Samira Ghodratnama , Mehrdad Zakershahrak

This paper is a survey discussing Information Retrieval concepts, methods, and applications. It goes deep into the document and query modelling involved in IR systems, in addition to pre-processing operations such as removing stop words and…

Information Retrieval · Computer Science 2012-12-11 Youssef Bassil

We propose the Neural Vector Space Model (NVSM), a method that learns representations of documents in an unsupervised manner for news article retrieval. In the NVSM paradigm, we learn low-dimensional representations of words and documents…

Information Retrieval · Computer Science 2018-08-21 Christophe Van Gysel , Maarten de Rijke , Evangelos Kanoulas

This paper addresses the challenge of improving information retrieval from semi-structured eXtensible Markup Language (XML) documents. Traditional information retrieval systems (IRS) often overlook user-specific needs and return identical…

Information Retrieval · Computer Science 2026-03-24 Ounnaci Iddir , Ahmed-ouamer Rachid , Tai Dinh

Learning a high-dimensional dense representation for vocabulary terms, also known as a word embedding, has recently attracted much attention in natural language processing and information retrieval tasks. The embedding vectors are typically…

Information Retrieval · Computer Science 2017-07-18 Hamed Zamani , W. Bruce Croft

In many natural language processing (NLP) tasks, a document is commonly modeled as a bag of words using the term frequency-inverse document frequency (TF-IDF) vector. One major shortcoming of the frequency-based TF-IDF feature vector is…

Computation and Language · Computer Science 2016-12-15 Wei Li , Brian Kan Wing Mak

Information retrieval systems are crucial for enabling effective access to large document collections. Recent approaches have leveraged Large Language Models (LLMs) to enhance retrieval performance through query augmentation, but often rely…

Information Retrieval · Computer Science 2025-04-15 Pengcheng Jiang , Jiacheng Lin , Lang Cao , Runchu Tian , SeongKu Kang , Zifeng Wang , Jimeng Sun , Jiawei Han

Information retrieval (IR) plays a crucial role in locating relevant resources from vast amounts of data, and its applications have evolved from traditional knowledge bases to modern retrieval models (RMs). The emergence of large language…

Computation and Language · Computer Science 2023-12-13 Jiazhan Feng , Chongyang Tao , Xiubo Geng , Tao Shen , Can Xu , Guodong Long , Dongyan Zhao , Daxin Jiang

Deep neural networks have achieved significant improvements in information retrieval (IR). However, most existing models are computational costly and can not efficiently scale to long documents. This paper proposes a novel End-to-End neural…

Computation and Language · Computer Science 2019-08-13 Chen Zheng , Yu Sun , Shengxian Wan , Dianhai Yu

The continuous increasing in the amount of the published and stored information requires a special Information Retrieval (IR) frameworks to search and get information accurately and speedily. Currently, keywords-based techniques are…

Information Retrieval · Computer Science 2015-12-11 Eissa M. Alshari

Retrieving and extracting knowledge from extensive research documents and large databases presents significant challenges for researchers, students, and professionals in today's information-rich era. Existing retrieval systems, which rely…

Information Retrieval · Computer Science 2025-02-06 Mohammed-Khalil Ghali , Abdelrahman Farrag , Daehan Won , Yu Jin

In information retrieval (IR) and related tasks, term weighting approaches typically consider the frequency of the term in the document and in the collection in order to compute a score reflecting the importance of the term for the…

Machine Learning · Computer Science 2021-09-22 Alejandro Moreo Fernández , Andrea Esuli , Fabrizio Sebastiani

The massive upload of text on the internet creates a huge inverted index in information retrieval systems, which hurts their efficiency. The purpose of this research is to measure the effect of the Multi-Layer Similarity model of the…

Information Retrieval · Computer Science 2020-04-29 Ahmad Hussein Ababneh , Joan Lu , Qiang Xu

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 explosion of information constrains the judgement of search terms associated with Knowledge-Based Web Ecosystem (KBWE), making the retrieval of relevant information and its knowledge management challenging. The existing information…

Information Retrieval · Computer Science 2020-12-11 Dengya Zhu , Shastri Lakshman Nimmagadda , Torsten Reiners , Amit Rudra

Most Information Retrieval models compute the relevance score of a document for a given query by summing term weights specific to a document or a query. Heuristic approaches, like TF-IDF, or probabilistic models, like BM25, are used to…

Information Retrieval · Computer Science 2016-06-15 B. Piwowarski

This paper highlights the growing importance of information retrieval (IR) engines in the scientific community, addressing the inefficiency of traditional keyword-based search engines due to the rising volume of publications. The proposed…

Information Retrieval · Computer Science 2024-10-24 Mahsa Shamsabadi , Jennifer D'Souza