Łukasik, Szymon ; Lalik, Konrad ; Sarna, Piotr ; Kowalski, Piotr A. ; Charytanowicz, Małgorzata ; Kulczycki, Piotr
Kulczycki, Piotr - ed. ; Kacprzyk, Janusz - ed. ; Kóczy, László T. - ed. ; Mesiar, Radko - ed.
Extracting useful information from astronomical observations represents one of the most challenging tasks of data exploration. This is largely due to the volume of the data acquired using advanced observational tools. While other challenges typical for the class of big data problems (like data variety) are also present, the size of datasets represents the most significant obstacle in visualization and subsequent analysis. ; This paper studies an efficient data condensation algorithm aimed at providing its compact representation. It is based on fast nearest neighbor calculation using tree structures and parallel processing. In addition to that, the possibility of using approximate identification of neighbors, to even further improve the algorithm time performance, is also evaluated. The properties of the proposed approach, both in terms of performance and condensation quality, are experimentally assessed on astronomical datasets related to the GAIA mission. It is concluded that the introduced technique might serve as a scalable method of alleviating the problem of the dataset size.
Zielona Góra: Uniwersytet Zielonogórski
AMCS, volume 29, number 3 (2019) ; kliknij tutaj, żeby przejść
Biblioteka Uniwersytetu Zielonogórskiego
14 lip 2025
11 lip 2025
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https://zbc.uz.zgora.pl/repozytorium/publication/100982
| Nazwa wydania | Data |
|---|---|
| Efficient astronomical data condensation using approximate nearest neighbors | 14 lip 2025 |
Kulczycki, Piotr Łukasik, Szymon Korbicz, Józef (1951- ) - red. Kowal, Marek - red.
Iaremko, Iaroslav Senkerik, Roman Jasek, Roman Lukastik, Petr Kusy, Maciej - ed. Scherer, Rafał - ed. Krzyżak, Adam - ed.
Kulczycki, Piotr Charytanowicz, Małgorzata Korbicz, Józef (1951- ) - red. Uciński, Dariusz - red.
Kulczycki, Piotr Charytanowicz, Małgorzata Korbicz, Józef (1951- ) - red. Uciński, Dariusz - red.
Kulczycki, Piotr Franus, Krystian Charytanowicz, Małgorzata Korbicz, Józef (1951- ) - red. Uciński, Dariusz - red.
Stefanowski, Jerzy Krawiec, Krzysztof Wrembel, Robert Stefanowski, Jerzy - ed. Krawiec, Krzysztof - ed. Wrembel, Robert - ed.
Gorawski, Marcin Lorek, Michał Stefanowski, Jerzy - ed. Krawiec, Krzysztof - ed. Wrembel, Robert - ed.
Sawerwain, Marek Wróblewski, Marek Gamper, Johann - ed. Wrembel, Robert - ed.