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164
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COMPGEOM
2006
ACM
16 years 13 days ago
2006
ACM
We study the problem of minimum-distortion embedding of ultrametrics into the plane and higher dimensional spaces. Ultrametrics are a natural class of metrics that frequently occu...
171
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COMPGEOM
2006
ACM
16 years 13 days ago
2006
ACM
In a Batched Colored Intersection Searching Problem (CI), one is given a set of n geometric objects (of a certain class). Each object is colored by one of c colors, and the goal i...
168
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COMPGEOM
2006
ACM
16 years 13 days ago
2006
ACM
We construct a class of envelope surfaces in Rd , more precisely envelopes of balls. An envelope surface is a closed C1 (tangent continuous) manifold wrapping tightly around the u...
188
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CSCW
2006
ACM
16 years 13 days ago
2006
ACM
We evaluate response times, in N-user collaborations, of the popular centralized (client-server) and replicated (peer-to-peer) architectures, and a hybrid architecture in which ea...
222
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DIM
2006
ACM
16 years 13 days ago
2006
ACM
An emerging approach to the problem of reducing the identity theft is represented by the adoption of biometric authentication systems. Such systems however present however several...