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STOC
2003
ACM
130views Algorithms» more  STOC 2003»
16 years 4 months ago
A tight bound on approximating arbitrary metrics by tree metrics
In this paper, we show that any n point metric space can be embedded into a distribution over dominating tree metrics such that the expected stretch of any edge is O(log n). This ...
Jittat Fakcharoenphol, Satish Rao, Kunal Talwar
EDBT
2004
ACM
139views Database» more  EDBT 2004»
16 years 4 months ago
Efficient Distributed Skylining for Web Information Systems
Though skyline queries already have claimed their place in retrieval over central databases, their application in Web information systems up to now was impossible due to the distri...
Wolf-Tilo Balke, Ulrich Güntzer, Jason Xin Zh...
EDBT
2008
ACM
99views Database» more  EDBT 2008»
16 years 4 months ago
Querying time-series streams
Index trees created using distance based indexing are difficult to maintain online since the distance function involved is often costly to compute. This problem is intensified whe...
Vivekanand Gopalkrishnan
EWSN
2004
Springer
16 years 4 months ago
Context-Aware Sensors
Wireless sensor networks typically consist of a large number of sensor nodes embedded in a physical space. Such sensors are low-power devices that are primarily used for monitoring...
Eiman Elnahrawy, Badri Nath
WWW
2010
ACM
15 years 11 months ago
Scalable discovery of contradictions on the web
Our study addresses the problem of large-scale contradiction detection and management, from data extracted from the Web. We describe the first systematic solution to the problem,...
Mikalai Tsytsarau, Themis Palpanas, Kerstin Deneck...