Discovery of Path Nearby Clusters in Spatial Networks
Discovery of Path Nearby Clusters in Spatial Networks
复制标题
空间网络中路径附近簇的发现
DOI:
10.1109/tkde.2014.2382583
复制
发表时间:
2015-06
影响因子:
8.9
通讯作者:
Ji-Rong Wen
中科院分区:
文献类型:
--
作者:
Shuo Shang;Kai Zheng;Christian S. Jensen;Bin Yang;Panos Kalnis;Guohe Li;Ji-Rong Wen
The discovery of regions of interest in large cities is an important challenge. We propose and investigate a novel query called the path nearby cluster (PNC) query that finds regions of potential interest (e.g., sightseeing places and commercial districts) with respect to a user-specified travel route. Given a set of spatial objects O (e.g., POIs, geo-tagged photos, or geo-tagged tweets) and a query route q, if a cluster c has high spatial-object density and is spatially close to q, it is returned by the query (a cluster is a circular region defined by a center and a radius). This query aims to bring important benefits to users in popular applications such as trip planning and location recommendation. Efficient computation of the PNC query faces two challenges: how to prune the search space during query processing, and how to identify clusters with high density effectively. To address these challenges, a novel collective search algorithm is developed. Conceptually, the search process is conducted in the spatial and density domains concurrently. In the spatial domain, network expansion is adopted, and a set of vertices are selected from the query route as expansion centers. In the density domain, clusters are sorted according to their density distributions and they are scanned from the maximum to the minimum. A pair of upper and lower bounds are defined to prune the search space in the two domains globally. The performance of the PNC query is studied in extensive experiments based on real and synthetic spatial data.
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DOI:
10.1145/956676.956677
发表时间:
2003-11
期刊:
--
影响因子:
--
作者:
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通讯作者:
Christian S. Jensen;Jan Kolárvr;T. Pedersen;Igor Timko
DOI:
10.1007/978-1-4614-1629-6
发表时间:
2011-10
期刊:
--
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1002/9781444324044.ch9
发表时间:
2010-06
期刊:
--
影响因子:
--
作者:
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通讯作者:
Anil K. Jain;J. Mao;K. Mohiuddin
DOI:
10.1007/978-1-0716-0826-5
发表时间:
2004-08
期刊:
Artificial Neural Networks
影响因子:
--
作者:
Steven Walczak
通讯作者:
Steven Walczak
DOI:
10.1016/b978-155860869-6/50033-0
发表时间:
2002-08
期刊:
--
影响因子:
--
作者:
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通讯作者:
Yufei Tao;Dimitris Papadias;Qiongmao Shen