Eleftherios Kofidis

2 papers indexed

arxivstat.MLcs.LGeess.SP2026-07-19

Kernel Regression with Tensor Trains and Hadamard Overparameterization

Duc Thien Nguyen, Konstantinos Slavakis, Eleftherios Kofidis, Dimitris Pados

Kernel regression with tensor trains and Hadamard overparameterization (KReTTaH) is introduced as a training-data-free, interpretable, and nonparametric framework for multi-way data imputation. The imputation problem is reformulated as regression in reproducing kernel Hilbert spa…

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arxivstat.MEeess.SP2026-07-05

Beyond Tensor Probabilistic Independent Component Analysis -- Putting Block-Term Decomposition and Independent Vector Analysis Together

Eleftherios Kofidis

Tensor probabilistic independent component analysis (TPICA) is a popular approach to analyzing functional magnetic resonance imaging (fMRI) data, which draws its popularity from its ability to enrich the advantages of the statistics-based ICA with the awareness of the multi-way n…

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