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Traditional information retrieval systems represent documents and queries by keyword sets. However, the content of a document or a query is mainly defined by both keywords and named entities occurring in it. Named entities have ontological…

Information Retrieval · Computer Science 2018-07-17 Vuong M. Ngo , Tru H. Cao

Retrieval-Augmented Generation (RAG) has emerged as an effective paradigm for generating contextually accurate answers by integrating Large Language Models (LLMs) with retrieval mechanisms. However, in legal contexts, users frequently…

Information Retrieval · Computer Science 2025-04-16 João Alberto de Oliveira Lima

Recent advancements in Retrieval-Augmented Generation (RAG) have enabled Large Language Models (LLMs) to access multimodal knowledge bases containing both text and visual information such as charts, diagrams, and tables in financial…

This work introduces VERSE, a methodology for analyzing and improving Vision-Language Models applied to Visually-rich Document Understanding by exploring their visual embedding space. VERSE enables the visualization of latent…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Ignacio de Rodrigo , Alvaro J. Lopez-Lopez , Jaime Boal

Retrieving pertinent documents from various data sources with diverse characteristics poses a significant challenge for Document Retrieval Systems. The complexity of this challenge is further compounded when accounting for the semantic…

Information Retrieval · Computer Science 2025-08-29 Apurva Kulkarni , Chandrashekar Ramanathan , Vinu E Venugopal

Distributed representations of words and paragraphs as semantic embeddings in high dimensional data are used across a number of Natural Language Understanding tasks such as retrieval, translation, and classification. In this work, we…

Computation and Language · Computer Science 2015-08-04 Devendra Singh Sachan , Shailesh Kumar

Searching for mathematical results remains difficult: most existing tools retrieve entire papers, while mathematicians and theorem-proving agents often seek a specific theorem, lemma, or proposition that answers a query. While semantic…

Information Retrieval · Computer Science 2026-03-10 Luke Alexander , Eric Leonen , Sophie Szeto , Artemii Remizov , Ignacio Tejeda , Jarod Alper , Giovanni Inchiostro , Vasily Ilin

In this paper, we describe our end-to-end content-based image retrieval system built upon Elasticsearch, a well-known and popular textual search engine. As far as we know, this is the first time such a system has been implemented in…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Cun Mu , Jun Zhao , Guang Yang , Jing Zhang , Zheng Yan

Content-based image retrieval has seen astonishing progress over the past decade, especially for the task of retrieving images of the same object that is depicted in the query image. This scenario is called instance or object retrieval and…

Computer Vision and Pattern Recognition · Computer Science 2020-11-13 Björn Barz , Joachim Denzler

We present SeVeN (Semantic Vector Networks), a hybrid resource that encodes relationships between words in the form of a graph. Different from traditional semantic networks, these relations are represented as vectors in a continuous vector…

Computation and Language · Computer Science 2018-08-21 Luis Espinosa-Anke , Steven Schockaert

Most text retrievers generate \emph{one} query vector to retrieve relevant documents. Yet, the conditional distribution of relevant documents for the query may be multimodal, e.g., representing different interpretations of the query. We…

Computation and Language · Computer Science 2025-11-05 Hung-Ting Chen , Xiang Liu , Shauli Ravfogel , Eunsol Choi

Both named entities and keywords are important in defining the content of a text in which they occur. In particular, people often use named entities in information search. However, named entities have ontological features, namely, their…

Information Retrieval · Computer Science 2018-07-17 Tru H. Cao , Vuong M. Ngo

In the modern era of rapidly increasing data volumes, accurately retrieving and recommending relevant documents has become crucial in enhancing the reliability of Question Answering (QA) systems. Recently, Retrieval Augmented Generation…

Information Retrieval · Computer Science 2024-09-24 Thiem Nguyen Ba , Vinh Doan The , Tung Pham Quang , Toan Tran Van

Learning vectors that capture the meaning of concepts remains a fundamental challenge. Somewhat surprisingly, perhaps, pre-trained language models have thus far only enabled modest improvements to the quality of such concept embeddings.…

Computation and Language · Computer Science 2023-05-18 Na Li , Hanane Kteich , Zied Bouraoui , Steven Schockaert

Vector-based retrieval systems have become a common staple for academic and industrial search applications because they provide a simple and scalable way of extending the search to leverage contextual representations for documents and…

Information Retrieval · Computer Science 2023-04-04 Daniel Campos , ChengXiang Zhai

Assessing the degree of semantic relatedness between words is an important task with a variety of semantic applications, such as ontology learning for the Semantic Web, semantic search or query expansion. To accomplish this in an automated…

Computation and Language · Computer Science 2017-05-25 Thomas Niebler , Martin Becker , Christian Pölitz , Andreas Hotho

Learning representations for semantic relations is important for various tasks such as analogy detection, relational search, and relation classification. Although there have been several proposals for learning representations for individual…

Computation and Language · Computer Science 2015-05-04 Danushka Bollegala , Takanori Maehara , Ken-ichi Kawarabayashi

This paper addresses the gap between general-purpose text embeddings and the specific demands of item retrieval tasks. We demonstrate the shortcomings of existing models in capturing the nuances necessary for zero-shot performance on item…

Information Retrieval · Computer Science 2024-03-01 Yuxuan Lei , Jianxun Lian , Jing Yao , Mingqi Wu , Defu Lian , Xing Xie

Harnessing the full potential of visually-rich documents requires retrieval systems that understand not just text, but intricate layouts, a core challenge in Visual Document Retrieval (VDR). The prevailing multi-vector architectures, while…

Computation and Language · Computer Science 2026-03-03 Yibo Yan , Mingdong Ou , Yi Cao , Xin Zou , Shuliang Liu , Jiahao Huo , Yu Huang , James Kwok , Xuming Hu

This paper demonstrates the utility of organized numerical representations of genes in research involving flat string gene formats (i.e., FASTA/FASTQ5). FASTA/FASTQ files have several current limitations, such as their large file sizes,…

Genomics · Quantitative Biology 2023-08-11 Daniel H. Um , David A. Knowles , Gail E. Kaiser