Continuous k-means monitoring over moving objects
Given a data set P, a k-means query returns k points in space (called centers), such that the
average squared distance between each point in P and its nearest center is minimized …
average squared distance between each point in P and its nearest center is minimized …
Towards integrating real-world spatiotemporal data with social networks
As the popularity of social networks is continuously growing, collected data about online
social activities is becoming an important asset enabling many applications such as target …
social activities is becoming an important asset enabling many applications such as target …
Subject-oriented top-k hot region queries in spatial dataset
This paper proposes and solves a novel type of spatial queries named Subject-oriented Top-
k hot Region (STR) queries. Given a subject S defined by a feature set R and features …
k hot Region (STR) queries. Given a subject S defined by a feature set R and features …
GEOSO-a geo-social model: from real-world co-occurrences to social connections
As the popularity of social networks is continuously growing, collected data about online
social activities is becoming an important asset enabling many applications such as target …
social activities is becoming an important asset enabling many applications such as target …
[图书][B] Revisiting aggregation techniques for data intensive applications
J Wen - 2013 - search.proquest.com
Aggregation has been an important operation since the early days of relational databases.
Today's Big Data applications bring further challenges when processing aggregation …
Today's Big Data applications bring further challenges when processing aggregation …
On continuously monitoring the top-k moving objects with relational group and score functions
J Wen, VJ Tsotras, D Zhang - SIGSPATIAL Special, 2009 - dl.acm.org
With the wide usage of location tracking system, continuously mining relationships among
moving objects over their location changes is possible and also important to many real …
moving objects over their location changes is possible and also important to many real …
On continuous monitoring top-k unsafe moving objects
J Wen, VJ Tsotras - Proceedings of the 18th SIGSPATIAL International …, 2010 - dl.acm.org
With the wide usage of location tracking systems, continuously tracking relationships among
moving objects over their location changes is possible and important to many real …
moving objects over their location changes is possible and important to many real …