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» Query Evaluation on a Database Given by a Random Graph
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228
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GIS
2007
ACM
16 years 4 months ago
Proximity queries in large traffic networks
In this paper, we present an original network graph embedding to speed-up distance-range and k-nearest neighbor queries in (weighted) graphs. Our approach implements the paradigm ...
Hans-Peter Kriegel, Matthias Renz, Peer Kröge...
151
Voted
VLDB
2004
ACM
187views Database» more  VLDB 2004»
15 years 9 months ago
Voronoi-Based K Nearest Neighbor Search for Spatial Network Databases
A frequent type of query in spatial networks (e.g., road networks) is to find the K nearest neighbors (KNN) of a given query object. With these networks, the distances between ob...
Mohammad R. Kolahdouzan, Cyrus Shahabi
137
Voted
SIGMOD
2010
ACM
196views Database» more  SIGMOD 2010»
15 years 7 months ago
Connected substructure similarity search
Substructure similarity search is to retrieve graphs that approximately contain a given query graph. It has many applications, e.g., detecting similar functions among chemical com...
Haichuan Shang, Xuemin Lin, Ying Zhang, Jeffrey Xu...
120
Voted
PAKDD
2010
ACM
179views Data Mining» more  PAKDD 2010»
15 years 8 months ago
Answer Diversification for Complex Question Answering on the Web
We present a novel graph ranking model to extract a diverse set of answers for complex questions via random walks over a negative-edge graph. We assign a negative sign to edge weig...
Palakorn Achananuparp, Xiaohua Hu, Tingting He, Ch...
138
Voted
VLDB
2002
ACM
161views Database» more  VLDB 2002»
15 years 3 months ago
Distributed Search over the Hidden Web: Hierarchical Database Sampling and Selection
Many valuable text databases on the web have non-crawlable contents that are "hidden" behind search interfaces. Metasearchers are helpful tools for searching over many s...
Panagiotis G. Ipeirotis, Luis Gravano