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SIGGRAPH
1999
ACM
13 years 11 months ago
Direct Illumination with Lazy Visibility Evaluation
In this paper we present a technique for computing the direct lighting in a three-dimensional scene containing area light sources. Our method correctly handles partial visibility ...
David Hart, Philip Dutré, Donald P. Greenbe...
DLOG
2006
13 years 8 months ago
Tableau Caching for Description Logics with Inverse and Transitive Roles
Abstract. Modern description logic (DL) reasoners are known to be less efficient for DLs with inverse roles. The current loss of performance is largely due to the missing applicabi...
Yu Ding, Volker Haarslev
ICDE
2008
IEEE
124views Database» more  ICDE 2008»
14 years 8 months ago
Mining Approximate Order Preserving Clusters in the Presence of Noise
Subspace clustering has attracted great attention due to its capability of finding salient patterns in high dimensional data. Order preserving subspace clusters have been proven to...
Mengsheng Zhang, Wei Wang 0010, Jinze Liu
TVLSI
2008
126views more  TVLSI 2008»
13 years 6 months ago
Body Bias Voltage Computations for Process and Temperature Compensation
With continued scaling into the sub-90nm regime, the role of process, voltage and temperature (PVT) variations on the performance of VLSI circuits has become extremely important. T...
Sanjay V. Kumar, Chris H. Kim, Sachin S. Sapatneka...
ICDE
2004
IEEE
137views Database» more  ICDE 2004»
14 years 8 months ago
Selectivity Estimation for XML Twigs
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
Neoklis Polyzotis, Minos N. Garofalakis, Yannis E....