TY - GEN
T1 - CkNN query processing over moving objects with uncertain speeds in road networks
AU - Li, Guohui
AU - Li, Yanhong
AU - Shu, Lihchyun
AU - Fan, Ping
PY - 2011
Y1 - 2011
N2 - This paper focuses on processing continuous k nearest neighbor queries over objects moving at uncertain speeds (CUkNN) in road networks. We present a novel model to estimate the distances between objects and a query, both of which move at variable speeds in the road network. Based on the proposed distance model, we present a CUkNN query monitoring method to continuously find the objects that could potentially be the k-nearest neighbors (kNN) of the query. We propose an efficient method to calculate the probability of each object being a kNN of a query. The key thing about the method is that the probability of an object being a kNN of query q is shown to be equivalent to the probability of a special line segment being one of the k-nearest lines from q, which greatly simplifies the probability calculation.
AB - This paper focuses on processing continuous k nearest neighbor queries over objects moving at uncertain speeds (CUkNN) in road networks. We present a novel model to estimate the distances between objects and a query, both of which move at variable speeds in the road network. Based on the proposed distance model, we present a CUkNN query monitoring method to continuously find the objects that could potentially be the k-nearest neighbors (kNN) of the query. We propose an efficient method to calculate the probability of each object being a kNN of a query. The key thing about the method is that the probability of an object being a kNN of query q is shown to be equivalent to the probability of a special line segment being one of the k-nearest lines from q, which greatly simplifies the probability calculation.
UR - http://www.scopus.com/inward/record.url?scp=79955087000&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955087000&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-20291-9_9
DO - 10.1007/978-3-642-20291-9_9
M3 - Conference contribution
AN - SCOPUS:79955087000
SN - 9783642202902
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 65
EP - 76
BT - Web Technologies and Applications - 13th Asia-Pacific Web Conference, APWeb 2011, Proceedings
T2 - 13th Asia-Pacific Conference on Web Technology, APWeb 2011
Y2 - 18 April 2011 through 20 April 2011
ER -