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» Polynomial-time theory of matrix groups
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TCS
2002
13 years 5 months ago
Binary (generalized) Post Correspondence Problem
An instance of the (Generalized) Post Correspondence Problem is during the decision process typically reduced to one or more other instances, called its successors. In this paper ...
Vesa Halava, Tero Harju, Mika Hirvensalo
SIGMOD
2009
ACM
171views Database» more  SIGMOD 2009»
14 years 6 months ago
GAMPS: compressing multi sensor data by grouping and amplitude scaling
We consider the problem of collectively approximating a set of sensor signals using the least amount of space so that any individual signal can be efficiently reconstructed within...
Sorabh Gandhi, Suman Nath, Subhash Suri, Jie Liu
ICC
2008
IEEE
110views Communications» more  ICC 2008»
14 years 12 days ago
On the Eigenvalue Distribution of Ricean MIMO Channels by Character Expansion of Groups
Abstract— Joint eigenvalue distribution of the noncentral complex Wishart matrix, i.e. HH∗ where H is the nonzero-mean complex Gaussian random channel matrix of a multiple-inpu...
Alireza Ghaderipoor, Chintha Tellambura
COMPGEOM
2011
ACM
12 years 9 months ago
Zigzag persistent homology in matrix multiplication time
We present a new algorithm for computing zigzag persistent homology, an algebraic structure which encodes changes to homology groups of a simplicial complex over a sequence of sim...
Nikola Milosavljevic, Dmitriy Morozov, Primoz Skra...
APPROX
2009
Springer
112views Algorithms» more  APPROX 2009»
14 years 16 days ago
Deterministic Approximation Algorithms for the Nearest Codeword Problem
The Nearest Codeword Problem (NCP) is a basic algorithmic question in the theory of error-correcting codes. Given a point v ∈ Fn 2 and a linear space L ⊆ Fn 2 of dimension k NC...
Noga Alon, Rina Panigrahy, Sergey Yekhanin