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Dimensionality-reduced subspace clustering

Heckel, Reinhard ; Tschannen, Michael ; Bölcskei, Helmut

In: Information and Inference: A Journal of the IMA, 2017, vol. 6, no. 3, p. 246-283

Scalable algorithms for high-dimensional graphical lasso and function approximation

Eftekhari, Aryan ; Schenk, Olaf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO008.

Fundamental tasks in multivariate and numerical analysis, such as sparse precision matrix estimation via graphical lasso and function approximation, are formulated in ever-increasing dimensions. Consequently, this results in a significant increase in the computational demand that quickly renders standard solution methods intractable. With this motivation, we present two scalable algorithms that...

High-Dimensional Adaptive Sparse Polynomial Interpolation and Applications to Parametric PDEs

Chkifa, Abdellah ; Cohen, Albert ; Schwab, Christoph

In: Foundations of Computational Mathematics, 2014, vol. 14, no. 4, p. 601-633

SCOOP: A Real-Time Sparsity Driven People Localization Algorithm

Golbabaee, Mohammad ; Alahi, Alexandre ; Vandergheynst, Pierre

In: Journal of Mathematical Imaging and Vision, 2014, vol. 48, no. 1, p. 160-175

High performance selected inversion methods for sparse matrices : direct and stochastic approaches to selected inversion

Verbosio, Fabio ; Schenk, Olaf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2019 ; 2019INFO002.

The explicit evaluation of selected entries of the inverse of a given sparse matrix is an important process in various application fields and is gaining visibility in recent years. While a standard inversion process would require the computation of the whole inverse who is, in general, a dense matrix, state-of-the-art solvers perform a selected inversion process instead. Such approach allows...

Sparsity Driven People Localization with a Heterogeneous Network of Cameras

Alahi, Alexandre ; Jacques, Laurent ; Boursier, Yannick ; Vandergheynst, Pierre

In: Journal of Mathematical Imaging and Vision, 2011, vol. 41, no. 1-2, p. 39-58

Unified simulation of transport and luminescence inoptoelectronic nanostructures

Steiger, Sebastian ; Veprek, Ratko ; Witzigmann, Bernd

In: Journal of Computational Electronics, 2008, vol. 7, no. 4, p. 509-520

Reliable k ⋅ p band structure calculation for nanostructures using finite elements

Veprek, Ratko ; Steiger, Sebastian ; Witzigmann, Bernd

In: Journal of Computational Electronics, 2008, vol. 7, no. 4, p. 521-529

Missing values: sparse inverse covariance estimation andanextension to sparse regression

Städler, Nicolas ; Bühlmann, Peter

In: Statistics and Computing, 2012, vol. 22, no. 1, p. 219-235

Experiences with applying a genetic algorithm to determine an information systems architecture = Anwendung eines Genetischen Algorithmus zur Bestimmung der Architektur von Informationssystemen

Knolmayer, G. ; Gerber, J.

In: Operations-Research-Spektrum, 1997, vol. 19, no. 1, p. 47-53