Panos P. Markopoulos

activity

20132020

L_{1}

-subspace Signal Processing

171 citations · 321 across the 4 of their papers we have counts for

collaborators

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3 papers · 1 filter

cs.DS2017★ 24 cited

The Exact Solution to Rank-1 L1-norm TUCKER2 Decomposition

Panos P. Markopoulos, Dimitris G. Chachlakis, Evangelos E. Papalexakis

We study rank-1 {L1-norm-based TUCKER2} (L1-TUCKER2) decomposition of 3-way tensors, treated as a collection of $N$ $D \times M$ matrices that are to be jointly decomposed. Our con…

cs.DS2016★ 126 cited

Efficient L1-Norm Principal-Component Analysis via Bit Flipping

Panos P. Markopoulos, Sandipan Kundu, Shubham Chamadia +1

It was shown recently that the $K$ L1-norm principal components (L1-PCs) of a real-valued data matrix $X \in R^{D \times N}$ ( $N$ data samples of $D$ dimensions) ca…

cs.DS2014★ 171 cited

Optimal Algorithms for $L_{1}$ -subspace Signal Processing

Panos P. Markopoulos, George N. Karystinos, Dimitris A. Pados

We describe ways to define and calculate $L_{1}$ -norm signal subspaces which are less sensitive to outlying data than $L_{2}$ -calculated subspaces. We start with the computation of the…

The Exact Solution to Rank-1 L1-norm TUCKER2 Decomposition

Efficient L1-Norm Principal-Component Analysis via Bit Flipping

Optimal Algorithms for L1​-subspace Signal Processing

Optimal Algorithms for $L_{1}$ -subspace Signal Processing