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Large language model (LLM) contexts are typically constructed using retrieval-augmented generation (RAG), which involves ranking and selecting the top-k passages. The approach causes fragmentation in information graphs in document…

Artificial Intelligence · Computer Science 2026-01-16 Amir Khurshid , Abhishek Sehgal

The crucial role of the evaluation in the development of the information retrieval tools is useful evidence to improve the performance of these tools and the quality of results that they return. However, the classic evaluation approaches…

Information Retrieval · Computer Science 2011-06-01 Abdelkrim Bouramoul , Mohamed-Khireddine Kholladi , Bich-Lien Doan

User-to-item retrieval has been an active research area in recommendation system, and two tower models are widely adopted due to model simplicity and serving efficiency. In this work, we focus on a variant called \textit{conditional…

Information Retrieval · Computer Science 2025-08-26 Hongtao Lin , Haoyu Chen , Jaewon Jang , Jiajing Xu

Large language models record impressive performance on many natural language processing tasks. However, their knowledge capacity is limited to the pretraining corpus. Retrieval augmentation offers an effective solution by retrieving context…

Computation and Language · Computer Science 2023-11-22 Sai Munikoti , Anurag Acharya , Sridevi Wagle , Sameera Horawalavithana

Finding patterns in data and being able to retrieve information from those patterns is an important task in Information retrieval. Complex search requirements which are not fulfilled by simple string matching and require exploring certain…

Information Retrieval · Computer Science 2017-10-03 Amanpreet Singh , Karthik Venkatesan , Simranjyot Singh Gill

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

This paper proposes an incremental method that can be used by an intelligent system to learn better descriptions of a thematic context. The method starts with a small number of terms selected from a simple description of the topic under…

Information Retrieval · Computer Science 2010-04-28 Carlos M. Lorenzetti , Ana G. Maguitman

Scene text recognition (STR) is very challenging due to the diversity of text instances and the complexity of scenes. The community has paid increasing attention to boost the performance by improving the pre-processing image module, like…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Hui Zhang , Quanming Yao , Mingkun Yang , Yongchao Xu , Xiang Bai

In the wake of information overload in academia, methodologies and systems for search, recommendation, and prediction to aid researchers in identifying relevant research are actively studied and developed. Existing work, however, is limited…

Digital Libraries · Computer Science 2023-11-06 Tarek Saier , Youxiang Dong , Michael Färber

ContextVis introduces a workflow by integrating generative models to create contextual learning materials. It aims to boost knowledge acquisition through the creation of resources with contextual cues. A case study on vocabulary learning…

Human-Computer Interaction · Computer Science 2024-03-20 Bo Shui , Chufan Shi , Yujiu Yang , Xiaomei Nie

State-of-the-art methods on conversational recommender systems (CRS) leverage external knowledge to enhance both items' and contextual words' representations to achieve high quality recommendations and responses generation. However, the…

Information Retrieval · Computer Science 2023-04-19 Huy Dao , Dung D. Le , Cuong Chu

Problem Statement: The huge number of information on the web as well as the growth of new inexperienced users creates new challenges for information retrieval. It has become increasingly difficult for these users to find relevant documents…

Information Retrieval · Computer Science 2011-06-14 Abdelkrim Bouramoul , Mohamed-Khireddine Kholladi , Bich-Lien Doan

Users may strive to formulate an adequate textual query for their information need. Search engines assist the users by presenting query suggestions. To preserve the original search intent, suggestions should be context-aware and account for…

Neural and Evolutionary Computing · Computer Science 2015-07-09 Alessandro Sordoni , Yoshua Bengio , Hossein Vahabi , Christina Lioma , Jakob G. Simonsen , Jian-Yun Nie

Context: User intent modeling is a crucial process in Natural Language Processing that aims to identify the underlying purpose behind a user's request, enabling personalized responses. With a vast array of approaches introduced in the…

Conversational interfaces provide a flexible and easy way for users to seek information that may otherwise be difficult or inconvenient to obtain. However, existing interfaces generally fall into one of two categories: FAQs, where users…

Computation and Language · Computer Science 2024-03-27 Dirk Väth , Lindsey Vanderlyn , Ngoc Thang Vu

Exploiting the relationships among data is a classical query optimization technique. As persistent data is increasingly being created and maintained programmatically, prior work that infers data relationships from data statistics misses an…

Databases · Computer Science 2023-01-02 Xiaoxuan Liu , Shuxian Wang , Mengzhu Sun , Sicheng Pan , Ge Li , Siddharth Jha , Cong Yan , Junwen Yang , Shan Lu , Alvin Cheung

Recommender systems have been widely applied to assist user's decision making by providing a list of personalized item recommendations. Context-aware recommender systems (CARS) additionally take context information into considering in the…

Information Retrieval · Computer Science 2017-10-25 Yong Zheng

Data plays a vital role in machine learning studies. In the research of recommendation, both user behaviors and side information are helpful to model users. So, large-scale real scenario datasets with abundant user behaviors will contribute…

Information Retrieval · Computer Science 2021-06-14 Bin Hao , Min Zhang , Weizhi Ma , Shaoyun Shi , Xinxing Yu , Houzhi Shan , Yiqun Liu , Shaoping Ma

Textual explanations have proved to help improve user satisfaction on machine-made recommendations. However, current mainstream solutions loosely connect the learning of explanation with the learning of recommendation: for example, they are…

Information Retrieval · Computer Science 2021-01-26 Aobo Yang , Nan Wang , Hongbo Deng , Hongning Wang

Simulating user interactions enables a more user-oriented evaluation of information retrieval (IR) systems. While user simulations are cost-efficient and reproducible, many approaches often lack fidelity regarding real user behavior. Most…

Information Retrieval · Computer Science 2024-01-29 Björn Engelmann , Timo Breuer , Jana Isabelle Friese , Philipp Schaer , Norbert Fuhr