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In enterprise settings, efficiently retrieving relevant information from large and complex knowledge bases is essential for operational productivity and informed decision-making. This research presents a systematic empirical framework for…

One technique to improve the retrieval effectiveness of a search engine is to expand documents with terms that are related or representative of the documents' content.From the perspective of a question answering system, this might comprise…

Information Retrieval · Computer Science 2019-09-26 Rodrigo Nogueira , Wei Yang , Jimmy Lin , Kyunghyun Cho

Retrieval-Augmented Generation (RAG) has emerged as a powerful technique for enhancing the quality of responses in Question-Answering (QA) tasks. However, existing approaches often struggle with retrieving contextually relevant information,…

Computation and Language · Computer Science 2026-01-27 Tianyi Yang , Nashrah Haque , Vaishnave Jonnalagadda , Yuya Jeremy Ong , Zhehui Chen , Yanzhao Wu , Lei Yu , Divyesh Jadav , Wenqi Wei

Instruction tuning improves the performance of large language models (LLMs), but it heavily relies on high-quality training data. Recently, LLMs have been used to synthesize instruction data using seed question-answer (QA) pairs. However,…

Computation and Language · Computer Science 2025-05-20 Chi Zhang , Huaping Zhong , Hongtao Li , Chengliang Chai , Jiawei Hong , Yuhao Deng , Jiacheng Wang , Tian Tan , Yizhou Yan , Jiantao Qiu , Ye Yuan , Guoren Wang , Conghui He , Lei Cao

Recent studies show that the reasoning capabilities of Large Language Models (LLMs) can be improved by applying Reinforcement Learning (RL) to question-answering (QA) tasks in areas such as math and coding. With a long context length, LLMs…

Computation and Language · Computer Science 2025-10-17 Stephen Chung , Wenyu Du , Jie Fu

Question-Answering (QA) from technical documents often involves questions whose answers are present in figures, such as flowcharts or flow diagrams. Text-based Retrieval Augmented Generation (RAG) systems may fail to answer such questions.…

Computation and Language · Computer Science 2025-08-01 Sumit Soman , H. G. Ranjani , Sujoy Roychowdhury , Venkata Dharma Surya Narayana Sastry , Akshat Jain , Pranav Gangrade , Ayaaz Khan

Question answering (QA) has become an important application in the advanced development of large language models. General pre-trained large language models for question-answering are not trained to properly understand the knowledge or…

Computation and Language · Computer Science 2024-05-30 Sanat Sharma , David Seunghyun Yoon , Franck Dernoncourt , Dewang Sultania , Karishma Bagga , Mengjiao Zhang , Trung Bui , Varun Kotte

Large Language Models (LLMs) excel in various language tasks but they often generate incorrect information, a phenomenon known as "hallucinations". Retrieval-Augmented Generation (RAG) aims to mitigate this by using document retrieval for…

Information Retrieval · Computer Science 2024-07-18 Hamin Koo , Minseon Kim , Sung Ju Hwang

Large language models (LLMs) are incredible and versatile tools for text-based tasks that have enabled countless, previously unimaginable, applications. Retrieval models, in contrast, have not yet seen such capable general-purpose models…

Information Retrieval · Computer Science 2025-09-10 Julian Killingback , Hamed Zamani

As data retrieval demands become increasingly complex, traditional search methods often fall short in addressing nuanced and conceptual queries. Vector similarity search has emerged as a promising technique for finding semantically similar…

Artificial Intelligence · Computer Science 2024-12-31 Md Riyadh , Muqi Li , Felix Haryanto Lie , Jia Long Loh , Haotian Mi , Sayam Bohra

Recent advancements in Retrieval-Augmented Generation (RAG) have enabled Large Language Models to answer financial questions using external knowledge bases of U.S. SEC filings, earnings reports, and regulatory documents. However, existing…

We propose a novel probabilistic model for visual question answering (Visual QA). The key idea is to infer two sets of embeddings: one for the image and the question jointly and the other for the answers. The learning objective is to learn…

Computer Vision and Pattern Recognition · Computer Science 2018-06-12 Hexiang Hu , Wei-Lun Chao , Fei Sha

In dense retrieval, embedding long texts into dense vectors can result in information loss, leading to inaccurate query-text matching. Additionally, low-quality texts with excessive noise or sparse key information are unlikely to align well…

Computation and Language · Computer Science 2025-03-04 Hongming Tan , Shaoxiong Zhan , Hai Lin , Hai-Tao Zheng , Wai Kin Chan

Video question answering that requires external knowledge beyond the visual content remains a significant challenge in AI systems. While models can effectively answer questions based on direct visual observations, they often falter when…

Information Retrieval · Computer Science 2025-02-19 Md Zarif Ul Alam , Hamed Zamani

Text-based Question Answering (QA) is a challenging task which aims at finding short concrete answers for users' questions. This line of research has been widely studied with information retrieval techniques and has received increasing…

Information Retrieval · Computer Science 2020-05-28 Zahra Abbasiantaeb , Saeedeh Momtazi

Large language models (LLMs) have revolutionized various domains but still struggle with non-Latin scripts and low-resource languages. This paper addresses the critical challenge of improving multilingual performance without extensive…

Computation and Language · Computer Science 2025-01-08 Somnath Kumar , Vaibhav Balloli , Mercy Ranjit , Kabir Ahuja , Sunayana Sitaram , Kalika Bali , Tanuja Ganu , Akshay Nambi

Retrieval-Augmented Language Models (RALMs) have significantly improved performance in open-domain question answering (QA) by leveraging external knowledge. However, RALMs still struggle with unanswerable queries, where the retrieved…

Computation and Language · Computer Science 2024-08-09 Seong-Il Park , Seung-Woo Choi , Na-Hyun Kim , Jay-Yoon Lee

Large Language Models (LLMs) have exhibited an impressive capability to perform reasoning tasks, especially if they are encouraged to generate a sequence of intermediate steps. Reasoning performance can be improved by suitably combining…

Computation and Language · Computer Science 2025-04-11 Soumyasundar Pal , Didier Chételat , Yingxue Zhang , Mark Coates

Retriever-augmented generation (RAG) has become a widely adopted approach for enhancing the factual accuracy of large language models (LLMs). While current benchmarks evaluate the performance of RAG methods from various perspectives, they…

Information Retrieval · Computer Science 2025-04-08 Kepu Zhang , Zhongxiang Sun , Weijie Yu , Xiaoxue Zang , Kai Zheng , Yang Song , Han Li , Jun Xu

Large Language Models (LLMs) have demonstrated significant capabilities, particularly in the domain of question answering (QA). However, their effectiveness in QA is often undermined by the vagueness of user questions. To address this…

Computation and Language · Computer Science 2025-02-26 Junhao Chen , Bowen Wang , Zhouqiang Jiang , Yuta Nakashima