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Semantic search in retrieval-augmented generation (RAG) systems is often insufficient for complex information needs, particularly when relevant evidence is scattered across multiple sources. Prior approaches to this problem include agentic…

Machine Learning · Computer Science 2026-03-27 Ruizhong Miao , Yuying Wang , Rongguang Wang , Chenyang Li , Tao Sheng , Sujith Ravi , Dan Roth

We introduce an approach for open-domain question answering (QA) that retrieves and reads a passage graph, where vertices are passages of text and edges represent relationships that are derived from an external knowledge base or…

Computation and Language · Computer Science 2020-04-14 Sewon Min , Danqi Chen , Luke Zettlemoyer , Hannaneh Hajishirzi

Digital libraries maintain extensive collections of knowledge and need to provide effective access paths for their users. For instance, PubPharm, the specialized information service for Pharmacy in Germany, provides and develops access…

Information Retrieval · Computer Science 2025-09-15 Hermann Kroll , Pascal Sackhoff , Bill Matthias Thang , Christin Katharina Kreutz , Wolf-Tilo Balke

Efficiently identifying keyphrases that represent a given document is a challenging task. In the last years, plethora of keyword detection approaches were proposed. These approaches can be based on statistical (frequency-based) properties…

Information Retrieval · Computer Science 2023-12-25 Blaž Škrlj , Boshko Koloski , Senja Pollak

Recent advancements in Large Language Models (LLMs) have transformed code generation from natural language queries. However, despite their extensive knowledge and ability to produce high-quality code, LLMs often struggle with contextual…

Artificial Intelligence · Computer Science 2025-07-17 Mihir Athale , Vishal Vaddina

This paper presents a procedure to retrieve subsets of relevant documents from large text collections for Content Analysis, e.g. in social sciences. Document retrieval for this purpose needs to take account of the fact that analysts often…

Information Retrieval · Computer Science 2017-07-12 Gregor Wiedemann , Andreas Niekler

Tables on the Web contain a vast amount of knowledge in a structured form. To tap into this valuable resource, we address the problem of table retrieval: answering an information need with a ranked list of tables. We investigate this…

Information Retrieval · Computer Science 2021-05-14 Shuo Zhang , Krisztian Balog

In the field of Material Science, effective information retrieval systems are essential for facilitating research. Traditional Retrieval-Augmented Generation (RAG) approaches in Large Language Models (LLMs) often encounter challenges such…

Information Retrieval · Computer Science 2024-12-03 Radeen Mostafa , Mirza Nihal Baig , Mashaekh Tausif Ehsan , Jakir Hasan

Thanks to recent advancements in machine learning, vector-based methods have been adopted in many modern information retrieval (IR) systems. While showing promising retrieval performance, these approaches typically fail to explain why a…

Information Retrieval · Computer Science 2023-01-18 Boqi Chen , Kua Chen , Yujing Yang , Afshin Amini , Bharat Saxena , Cecilia Chávez-García , Majid Babaei , Amir Feizpour , Dániel Varró

Traditional Online Public Access Catalogues (OPACs) are becoming less effective due to the rapid growth of scholarly literature. Conventional search methods, such as keyword indexing and Boolean queries, often fail to support efficient…

Digital Libraries · Computer Science 2026-04-03 M. S. Rajeevan , B. Mini Devi

Recent advances in the healthcare industry have led to an abundance of unstructured data, making it challenging to perform tasks such as efficient and accurate information retrieval at scale. Our work offers an all-in-one scalable solution…

Information Retrieval · Computer Science 2023-02-15 Shreya Saxena , Raj Sangani , Siva Prasad , Shubham Kumar , Mihir Athale , Rohan Awhad , Vishal Vaddina

Scientific paper retrieval is essential for supporting literature discovery and research. While dense retrieval methods demonstrate effectiveness in general-purpose tasks, they often fail to capture fine-grained scientific concepts that are…

Information Retrieval · Computer Science 2025-10-07 Yunyi Zhang , Ruozhen Yang , Siqi Jiao , SeongKu Kang , Jiawei Han

Information retrieval (IR) for precision medicine (PM) often involves looking for multiple pieces of evidence that characterize a patient case. This typically includes at least the name of a condition and a genetic variation that applies to…

Computation and Language · Computer Science 2020-12-18 Jiho Noh , Ramakanth Kavuluru

Biomedical ontologies, which comprehensively define concepts and relations for biomedical entities, are crucial for structuring and formalizing domain-specific information representations. Biomedical code mapping identifies similarity or…

Information Retrieval · Computer Science 2025-02-27 Hui Feng , Yuntzu Yin , Emiliano Reynares , Jay Nanavati

Recently, neural models for information retrieval are becoming increasingly popular. They provide effective approaches for product search due to their competitive advantages in semantic matching. However, it is challenging to use…

Information Retrieval · Computer Science 2019-01-25 Yuan Zhang , Dong Wang , Yan Zhang

As the number of scientific publications and preprints is growing exponentially, several attempts have been made to navigate this complex and increasingly detailed landscape. These have almost exclusively taken unsupervised approaches that…

We study the problem of searching a repository of complex hierarchical workflows whose component modules, both composite and atomic, have been annotated with keywords. Since keyword search does not use the graph structure of a workflow, we…

Databases · Computer Science 2013-07-10 Susan B. Davidson , Xiaocheng Huang , Julia Stoyanovich , Xiaojie Yuan

This research paper addresses the limitations of semantic search in complex enterprise document ecosystems. Traditional RAG pipelines often fail to capture hierarchical and interconnected information, leading to retrieval inaccuracies. We…

Information Retrieval · Computer Science 2026-04-17 Koushik Chakraborty , Koyel Guha

Search engine has become a fundamental component in various web and mobile applications. Retrieving relevant documents from the massive datasets is challenging for a search engine system, especially when faced with verbose or tail queries.…

Information Retrieval · Computer Science 2020-08-11 Kuan Fang , Long Zhao , Zhan Shen , RuiXing Wang , RiKang Zhour , LiWen Fan

Scientists always look for the most accurate and relevant answer to their queries on the scholarly literature. Traditional scholarly search systems list documents instead of providing direct answers to the search queries. As data in…

Digital Libraries · Computer Science 2021-07-14 Golsa Heidari , Ahmad Ramadan , Markus Stocker , Sören Auer