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» On the Spectrum of the Derangement Graph
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JMLR
2010
158views more  JMLR 2010»
13 years 2 months ago
Topology Selection in Graphical Models of Autoregressive Processes
An algorithm is presented for topology selection in graphical models of autoregressive Gaussian time series. The graph topology of the model represents the sparsity pattern of the...
Jitkomut Songsiri, Lieven Vandenberghe
ICC
2007
IEEE
150views Communications» more  ICC 2007»
13 years 11 months ago
ACE Spectrum of LDPC Codes and Generalized ACE Design
The construction of good, finite-length, LDPC codes is currently an attractive research area. Reducing attention to the Binary Erasure Channel (BEC), this problem translates into t...
Dejan Vukobratovic, Aleksandar Djurendic, Vojin Se...
CPC
2006
92views more  CPC 2006»
13 years 7 months ago
Waiting for a Bat to Fly By (in Polynomial Time)
We observe returns of a simple random walk on a finite graph to a fixed node, and would like to infer properties of the graph, in particular properties of the spectrum of the trans...
Itai Benjamini, Gady Kozma, László L...
VISUALIZATION
1997
IEEE
13 years 11 months ago
The contour spectrum
We introduce the contour spectrum, a user interface component that improves qualitative user interaction and provides real-time exact quanti cation in the visualization of isocont...
Chandrajit L. Bajaj, Valerio Pascucci, Daniel Schi...
SDM
2008
SIAM
164views Data Mining» more  SDM 2008»
13 years 9 months ago
Randomizing Social Networks: a Spectrum Preserving Approach
Understanding the general properties of real social networks has gained much attention due to the proliferation of networked data. The nodes in the network are the individuals and...
Xiaowei Ying, Xintao Wu