Sciweavers

2412 search results - page 254 / 483
» Which Problems Have Strongly Exponential Complexity
Sort
View
161
Voted
CCS
2007
ACM
15 years 7 months ago
Efficient policy analysis for administrative role based access control
Administrative RBAC (ARBAC) policies specify how Role-Based Access Control (RBAC) policies may be changed by each administrator. It is often difficult to fully understand the effe...
Scott D. Stoller, Ping Yang, C. R. Ramakrishnan, M...
138
Voted
CORR
2010
Springer
144views Education» more  CORR 2010»
15 years 3 months ago
A Parallel Framework for Multilayer Perceptron for Human Face Recognition
Artificial neural networks have already shown their success in face recognition and similar complex pattern recognition tasks. However, a major disadvantage of the technique is th...
Mrinal Kanti Bhowmik, Debotosh Bhattacharjee, Mita...
ACISP
2004
Springer
15 years 9 months ago
Single Database Private Information Retrieval with Logarithmic Communication
In this paper, we study the problem of single database private information retrieval, and present schemes with only logarithmic server-side communication complexity. Previously th...
Yan-Cheng Chang
IJON
2002
104views more  IJON 2002»
15 years 3 months ago
Power and the limits of reactive agents
In this paper I will show how reactive agents can solve relatively complex tasks without requiring any internal state and I will demonstrate that this is due to their ability to c...
Stefano Nolfi
165
Voted
TCOM
2008
146views more  TCOM 2008»
15 years 3 months ago
Noncoherent eigenbeamforming and interference suppression for outdoor OFDM systems
Abstract--We investigate a new approach to uplink communications in wideband outdoor cellular systems that can take advantage of multiple antennas at the base station in a scalable...
Noah Jacobsen, Gwen Barriac, Upamanyu Madhow