72 search results - page 5 / 15 » Approximate distributed top- k queries |
GIS
2005
ACM
14 years 12 months ago
2005
ACM
Group nearest neighbor (GNN) queries are a relatively new type of operations in spatial database applications. Different from a traditional kNN query which specifies a single quer...
SIGIR
2009
ACM
14 years 5 months ago
2009
ACM
Pseudo relevance feedback (PRF), which has been widely applied in IR, aims to derive a distribution from the top n pseudo relevant documents D. However, these documents are often ...
CORR
2012
Springer
12 years 6 months ago
2012
Springer
A distance oracle is a compact representation of the shortest distance matrix of a graph. It can be queried to retrieve approximate distances and corresponding paths between any p...
BIBE
2003
IEEE
14 years 4 months ago
2003
IEEE
We present a multi-dimensional indexing approach for fast sequence similarity search in DNA and protein databases. In particular, we propose effective transformations of subsequen...
ICDE
2007
IEEE
15 years 6 days ago
2007
IEEE
Linear optimization queries retrieve the top-K tuples in a sliding window of a data stream that maximize/minimize the linearly weighted sums of certain attribute values. To effici...