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Data quality is a significant issue for any application that requests for analytics to support decision making. It becomes very important when we focus on Internet of Things (IoT) where numerous devices can interact to exchange and process…

Machine Learning · Computer Science 2020-07-30 Anna Karanika , Panagiotis Oikonomou , Kostas Kolomvatsos , Christos Anagnostopoulos

Retrieval Augmented Generation (RAG) is widely employed to ground responses to queries on domain-specific documents. But do RAG implementations leave out important information when answering queries that need an integrated analysis of…

Information Retrieval · Computer Science 2025-01-24 Jingwei Ni , Tobias Schimanski , Meihong Lin , Mrinmaya Sachan , Elliott Ash , Markus Leippold

We consider a problem of data integration. Consider determining which genes affect a disease. The genes, which we call predictor objects, can be measured in different experiments on the same individual. We address the question of finding…

Machine Learning · Statistics 2016-10-04 Xin Gao , Raymond J. Carroll

The switch from a Model-Centric to a Data-Centric mindset is putting emphasis on data and its quality rather than algorithms, bringing forward new challenges. In particular, the sensitive nature of the information in highly regulated…

Machine Learning · Computer Science 2022-04-14 Giorgio Visani , Giacomo Graffi , Mattia Alfero , Enrico Bagli , Davide Capuzzo , Federico Chesani

Rank fusion is a powerful technique that allows multiple sources of information to be combined into a single result set. However, to date fusion has not been regarded as being cost-effective in cases where strict per-query efficiency…

Information Retrieval · Computer Science 2020-11-11 Rodger Benham , Joel Mackenzie , Alistair Moffat , J. Shane Culpepper

Data reconciliation (DR) and Principal Component Analysis (PCA) are two popular data analysis techniques in process industries. Data reconciliation is used to obtain accurate and consistent estimates of variables and parameters from…

Machine Learning · Computer Science 2015-05-05 Shankar Narasimhan , Nirav Bhatt

Data is of high quality if it is fit for its intended use. The quality of data is influenced by the underlying data model and its quality. One major quality problem is the heterogeneity of data as quality aspects such as understandability…

Machine Learning · Computer Science 2021-11-15 Viola Wenz , Arno Kesper , Gabriele Taentzer

Rather than using (proxies of) end user or expert judgment to decide on the ranking of information, this paper asks whether conversations about information quality might offer a feasible and valuable addition for ranking information. We…

Information Retrieval · Computer Science 2022-10-17 Frans van der Sluis

This paper addresses the harmonization of metadata from diverse repositories of language resources (LRs). Leveraging linked data and RDF techniques, we integrate data from multiple sources into a unified model based on DCAT and META-SHARE…

Computation and Language · Computer Science 2025-01-13 Zixuan Liang

In the past few decades, researchers have proposed many discriminant analysis (DA) algorithms for the study of high-dimensional data in a variety of problems. Most DA algorithms for feature extraction are based on transformations that…

Computer Vision and Pattern Recognition · Computer Science 2012-06-12 Ali Shadvar

As scientific progress highly depends on the quality of research data, there are strict requirements for data quality coming from the scientific community. A major challenge in data quality assurance is to localise quality problems that are…

Information Retrieval · Computer Science 2020-07-24 Arno Kesper , Viola Wenz , Gabriele Taentzer

Data integration systems allow users to access data sitting in multiple sources by means of queries over a global schema, related to the sources via mappings. Data sources often contain sensitive information, and thus an analysis is needed…

Logic in Computer Science · Computer Science 2020-12-15 Michael Benedikt , Pierre Bourhis , Louis Jachiet , Michaël Thomazo

Limited by cognitive abilities, decision-makers (DMs) may struggle to evaluate decision alternatives based on all criteria in multiple criteria decision-making problems. This paper proposes an embedded criteria selection method derived from…

Optimization and Control · Mathematics 2025-06-10 Kun Zhou , Zaiwu Gong , Guo Wei , Roman Slowinski

Retrieval augmented generation (RAG) has transformed text based question answering, yet its extension to visual domains remains hindered by fundamental challenges: bridging the modality gap between image queries and text heavy knowledge…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Parthaw Goswami , Jaynto Goswami Deep

Retrieval-augmented generation (RAG) systems often rely on static retrieval, limiting adaptation to evolving intent and content drift. We introduce Dynamic Memory Alignment (DMA), an online learning framework that systematically…

Artificial Intelligence · Computer Science 2025-11-10 Yu Bai , Yukai Miao , Dawei Wang , Li Chen , Fei Long , Rundi Zhai , Dan Li , Yanyu Ren , Tianfeng Liu , Hongtao Xie , Ce Yang , Xuhui Cai

We study the problem of deep recall model in industrial web search, which is, given a user query, retrieve hundreds of most relevance documents from billions of candidates. The common framework is to train two encoding models based on…

Information Retrieval · Computer Science 2020-07-06 Yusi Zhang , Chuanjie Liu , Angen Luo , Hui Xue , Xuan Shan , Yuxiang Luo , Yiqian Xia , Yuanchi Yan , Haidong Wang

This paper proposes a theoretical framework which models the information provided by retrieval systems in terms of Information Theory. The proposed framework allows to formalize: (i) system effectiveness as an information theoretic…

Information Retrieval · Computer Science 2018-09-17 Enrique Amigó , Fernando Giner , Stefano Mizzaro , Damiano Spina

This paper advocates privacy preserving requirements on collection of user data for recommender systems. The purpose of our study is twofold. First, we ask if restrictions on data collection will hurt test quality of RNN-based…

Information Retrieval · Computer Science 2021-06-22 Gustav Hertz , Sandhya Sachidanandan , Balázs Tóth , Emil S. Jørgensen , Martin Tegnér

Indexing the Web of Data offers many opportunities, in particular, to find and explore data sources. One major design decision when indexing the Web of Data is to find a suitable index model, i.e., how to index and summarize data. Various…

Databases · Computer Science 2020-06-15 Till Blume , Ansgar Scherp

One of the important factors that affects the performance of Cross Language Information Retrieval(CLIR)is the quality of translations being employed in CLIR. In order to improve the quality of translations, it is important to exploit…

Information Retrieval · Computer Science 2014-05-22 Hosein Azarbonyad , Azadeh Shakery , Heshaam Faili