講演名 | 2009-07-28 Direction-Based Spatial Skyline Queries , |
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PDFダウンロードページ | PDFダウンロードページへ |
抄録(和) | |
抄録(英) | A location-based service provides a mobile user real-time suggestions by using the spatial information such as his current position and the possible destinations. Traditionally, this service regards the user's position and his possible destinations as points in the Euclidean space and chooses closer points to the query as better destinations. In practice, however, the direction for a destination is an important factor for the user's decision. Therefore, our framework chooses better points considering not only the distance aspect but also the direction aspect. The better points are defined in terms of an extended notion of the skyline concept; no other points can defeat them in both aspects. We propose efficient methods to respond instantaneous and continuous direction-based spatial skyline queries and search for better points in terms of both aspects. |
キーワード(和) | |
キーワード(英) | Spatial databases / location-based services / skyline queries / continuous queries / directions |
資料番号 | DE2009-5 |
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研究会情報 | |
研究会 | DE |
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開催期間 | 2009/7/21(から1日開催) |
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講演論文情報詳細 | |
申込み研究会 | Data Engineering (DE) |
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本文の言語 | ENG |
タイトル(和) | |
サブタイトル(和) | |
タイトル(英) | Direction-Based Spatial Skyline Queries |
サブタイトル(和) | |
キーワード(1)(和/英) | / Spatial databases |
第 1 著者 氏名(和/英) | / Xi GUO |
第 1 著者 所属(和/英) | Graduate School of Information Science,Nagoya University |
発表年月日 | 2009-07-28 |
資料番号 | DE2009-5 |
巻番号(vol) | vol.109 |
号番号(no) | 153 |
ページ範囲 | pp.- |
ページ数 | 6 |
発行日 |