Skyline queries over incomplete multidimensional database
In recent years, there has been much focus on skyline queries that incorporate and provide more flexible query operators that return data items which are dominating other data items in all attributes (dimensions). Several techniques for skyline have been proposed in the literature. Most of the exist...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
Universiti Utara Malaysia Press
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/59139/ http://psasir.upm.edu.my/id/eprint/59139/1/201.pdf |
| _version_ | 1848853840870244352 |
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| author | Alwan, Ali Amer Ibrahim, Hamidah Udzir, Nur Izura Sidi, Fatimah |
| author_facet | Alwan, Ali Amer Ibrahim, Hamidah Udzir, Nur Izura Sidi, Fatimah |
| author_sort | Alwan, Ali Amer |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In recent years, there has been much focus on skyline queries that incorporate and provide more flexible query operators that return data items which are dominating other data items in all attributes (dimensions). Several techniques for skyline have been proposed in the literature. Most of the existing skyline techniques aimed to find the skyline query results by supposing that the values of dimensions are always present for every data item. In this paper we aim to evaluate the skyline preference queries in which some dimension values are missing. We proposed an approach for answering preference queries in a database by utilizing the concept of skyline technique. The skyline set selected for a given query operation is then optimized so that the missing values are replaced with some approximate values that provide a skyline answer with complete data. This will significantly reduce the number of comparisons between data items. Beside that, the number of retrieved skyline data items is reduced and this guides the users to select the most appropriate data items from the several alternative complete skyline data items. |
| first_indexed | 2025-11-15T11:00:22Z |
| format | Conference or Workshop Item |
| id | upm-59139 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:00:22Z |
| publishDate | 2011 |
| publisher | Universiti Utara Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-591392018-02-23T00:23:37Z http://psasir.upm.edu.my/id/eprint/59139/ Skyline queries over incomplete multidimensional database Alwan, Ali Amer Ibrahim, Hamidah Udzir, Nur Izura Sidi, Fatimah In recent years, there has been much focus on skyline queries that incorporate and provide more flexible query operators that return data items which are dominating other data items in all attributes (dimensions). Several techniques for skyline have been proposed in the literature. Most of the existing skyline techniques aimed to find the skyline query results by supposing that the values of dimensions are always present for every data item. In this paper we aim to evaluate the skyline preference queries in which some dimension values are missing. We proposed an approach for answering preference queries in a database by utilizing the concept of skyline technique. The skyline set selected for a given query operation is then optimized so that the missing values are replaced with some approximate values that provide a skyline answer with complete data. This will significantly reduce the number of comparisons between data items. Beside that, the number of retrieved skyline data items is reduced and this guides the users to select the most appropriate data items from the several alternative complete skyline data items. Universiti Utara Malaysia Press 2011 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/59139/1/201.pdf Alwan, Ali Amer and Ibrahim, Hamidah and Udzir, Nur Izura and Sidi, Fatimah (2011) Skyline queries over incomplete multidimensional database. In: 3rd International Conference on Computing and Informatics (ICOCI 2011), 8-9 June 2011, Bandung, Indonesia. (pp. 201-206). |
| spellingShingle | Alwan, Ali Amer Ibrahim, Hamidah Udzir, Nur Izura Sidi, Fatimah Skyline queries over incomplete multidimensional database |
| title | Skyline queries over incomplete multidimensional database |
| title_full | Skyline queries over incomplete multidimensional database |
| title_fullStr | Skyline queries over incomplete multidimensional database |
| title_full_unstemmed | Skyline queries over incomplete multidimensional database |
| title_short | Skyline queries over incomplete multidimensional database |
| title_sort | skyline queries over incomplete multidimensional database |
| url | http://psasir.upm.edu.my/id/eprint/59139/ http://psasir.upm.edu.my/id/eprint/59139/1/201.pdf |