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CVPR
2008
IEEE
15 years 11 months ago
Normalized tree partitioning for image segmentation
In this paper, we propose a novel graph based clustering approach with satisfactory clustering performance and low computational cost. It consists of two main steps: tree fitting...
Jingdong Wang, Yangqing Jia, Xian-Sheng Hua, Chang...
TCOM
2010
112views more  TCOM 2010»
15 years 2 months ago
On further reduction of complexity in tree pruning based sphere search
Abstract—In this letter, we propose an extension of the probabilistic tree pruning sphere decoding (PTP-SD) algorithm that provides further improvement of the computational compl...
Byonghyo Shim, Insung Kang
SIGCSE
2008
ACM
365views Education» more  SIGCSE 2008»
15 years 4 months ago
Computer science olympiad: exploring computer science through competition
Generating interest in specialized areas of Computer Science (CS) is one of the goals of the department of Computer and Information Science at Spelman College as with most departm...
Iretta B. C. Kearse, Charles Hardnett
133
Voted
FOCS
2000
IEEE
15 years 9 months ago
On the Hardness of Graph Isomorphism
We show that the graph isomorphism problem is hard under DLOGTIME uniform AC0 many-one reductions for the complexity classes NL, PL (probabilistic logarithmic space) for every loga...
Jacobo Torán
FOCS
1992
IEEE
15 years 8 months ago
Proof Verification and Hardness of Approximation Problems
The class PCP(f(n), g(n)) consists of all languages L for which there exists a polynomial-time probabilistic oracle machine that uses O(f(n)) random bits, queries O(g(n)) bits of ...
Sanjeev Arora, Carsten Lund, Rajeev Motwani, Madhu...