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Authors: Martin Čech 1 and Jaroslav Pokorný 2

Affiliations: 1 Lekis s.r.o., Czech Republic ; 2 Charles University, Czech Republic

ISBN: 978-989-8565-18-1

Keyword(s): Top-K Query, Relational Database, Rank Join.

Related Ontology Subjects/Areas/Topics: Architectural Concepts ; Artificial Intelligence ; Big Data ; Business Analytics ; Data Analytics ; Data Engineering ; Data Management and Quality ; Data Modeling and Visualization ; Knowledge Discovery and Information Retrieval ; Knowledge-Based Systems ; Symbolic Systems

Abstract: Due to increasing capacity of storage devices and speed of computer networks during last years, it is still more required to sort and search data effectively. A query result containing thousands of rows from a relational database is usually useless and unreadable. In that situation, users may prefer to define constraints and sorting priorities in the query, and see only several top rows from the result. This paper deals with top-k queries problems, extension of relational algebra by new operators and their implementation in a database system. It focuses on optimization of operations join and sort. The work also includes implementation and comparison of some algorithms in standalone .NET library NRank.

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Paper citation in several formats:
Čech, M. and Pokorný, J. (2012). NRank: A Unified Platform Independent Approach for Top-K Algorithms.In Proceedings of the International Conference on Data Technologies and Applications - Volume 1: DATA, ISBN 978-989-8565-18-1, pages 111-116. DOI: 10.5220/0003966901110116

@conference{data12,
author={Martin Čech. and Jaroslav Pokorný.},
title={NRank: A Unified Platform Independent Approach for Top-K Algorithms},
booktitle={Proceedings of the International Conference on Data Technologies and Applications - Volume 1: DATA,},
year={2012},
pages={111-116},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003966901110116},
isbn={978-989-8565-18-1},
}

TY - CONF

JO - Proceedings of the International Conference on Data Technologies and Applications - Volume 1: DATA,
TI - NRank: A Unified Platform Independent Approach for Top-K Algorithms
SN - 978-989-8565-18-1
AU - Čech, M.
AU - Pokorný, J.
PY - 2012
SP - 111
EP - 116
DO - 10.5220/0003966901110116

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