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ICASSP
2011
IEEE
14 years 10 months ago
Prediction of discrete cosine transformed coefficients in resized pixel blocks
Abstract— A hybrid model was developed to predict the zeroquantized discrete cosine transform (ZQDCT) coefficients for intra blocks in our previous work. However, the complicated...
Jin Li, Weiwei Chen, Moncef Gabbouj, Jarmo Takala,...
ICASSP
2011
IEEE
14 years 10 months ago
Maximum marginal likelihood estimation for nonnegative dictionary learning
We describe an alternative to standard nonnegative matrix factorisation (NMF) for nonnegative dictionary learning. NMF with the Kullback-Leibler divergence can be seen as maximisa...
Onur Dikmen, Cédric Févotte
ICASSP
2011
IEEE
14 years 10 months ago
Online performance guarantees for sparse recovery
A K∗ -sparse vector x∗ ∈ RN produces measurements via linear dimensionality reduction as u = Φx∗ + n, where Φ ∈ RM×N (M < N), and n ∈ RM consists of independent ...
Raja Giryes, Volkan Cevher
ICASSP
2011
IEEE
14 years 10 months ago
Proportionate affine projection sign algorithms for sparse system identification in impulsive interference
Two proportionate af ne projection sign algorithms (APSAs) are proposed for system identi cation applications, such as network echo cancellation (NEC), where the impulse response ...
Zengli Yang, Yahong Rosa Zheng, Steven L. Grant
ICDE
2011
IEEE
274views Database» more  ICDE 2011»
14 years 10 months ago
SQPR: Stream query planning with reuse
—When users submit new queries to a distributed stream processing system (DSPS), a query planner must allocate physical resources, such as CPU cores, memory and network bandwidth...
Evangelia Kalyvianaki, Wolfram Wiesemann, Quang Hi...