Publications related to Computation

MATHICSE Technical Report : Fast computation of the matrix exponential for a Toeplitz matrix

Daniel Kressner, Robert Gerhard Jérôme Luce

The computation of the matrix exponential is a ubiquitous operation in numerical mathematics, and for a general, unstructured n×n matrix it can be computed in O(n3) operations. An interesting problem arises if the input matrix is a Toeplitz matrix, for exa ...

MATHICSE2016

Accelerated Spectral Clustering Using Graph Filtering of Random Signals

Pierre Vandergheynst, Rémi Gribonval, Gilles Puy, Nicolas Tremblay

We build upon recent advances in graph signal processing to propose a faster spectral clustering algorithm. Indeed, classical spectral clustering is based on the computation of the first

k

eigenvectors of the similarity matrix' Laplacian, whose computati ...

Ieee2016

Compressive Spectral Clustering

Pierre Vandergheynst, Rémi Gribonval, Gilles Puy, Nicolas Tremblay

Spectral clustering has become a popular technique due to its high performance in many contexts. It comprises three main steps: create a similarity graph between N objects to cluster, compute the first k eigenvectors of its Laplacian matrix to define a fea ...

2016

Human computation for data, information, and knowledge management

Thành Tâm Nguyên

The paradigm of Human Computation has grown rapidly in recent years and has thus sparked great interest in both the industry and the research community. In this survey, we give an overview of the state-of-the-art of human computation in the context of data ...

2016

MATHICSE Technical Report : A reduced basis approach to large-scale pseudospectra computation

Petar Sirkovic

For studying spectral properties of a non-normal matrix A ∈ Cn×n, information about its spectrum σ(A) alone is usually not enough. Effects of perturbations on σ(A) can be studied by computing ε-pseudospectra, that is the level-sets of the resolvent norm fu ...

MATHICSE2016

Optimized Distributed Hyperparameter Search and Simulation for Lung Texture Classification in CT Using Hadoop

Adrien Raphaël Depeursinge

Many medical image analysis tasks require complex learning strategies to reach a quality of image-based decision support that is sufficient in clinical practice. The analysis of medical texture in tomographic images, for example of lung tissue, is no excep ...

2016

Subdomain and Access Pattern Privacy Trading off Confidentiality and Performance

Bin Lu, Thomas Locher, Matus Harvan

Homomorphic encryption and secure multi-party computation enable computations on encrypted data. However, both techniques suffer from a large performance overhead. While advances in algorithms might reduce the overhead, we show that achieving perfect (or e ...

Scitepress2016

Distributed Policy Evaluation Under Multiple Behavior Strategies

Ali H. Sayed

We apply diffusion strategies to develop a fully-distributed cooperative reinforcement learning algorithm in which agents in a network communicate only with their immediate neighbors to improve predictions about their environment. The algorithm can also be ...

IEEE2015

Mechanism of the Cassie-Wenzel transition via the atomistic and continuum string methods

Simone Meloni

The string method is a general and flexible strategy to compute the most probable transition path for an activated process (rare event). We apply here the atomistic string method in the density field to the Cassie-Wenzel transition, a central problem in th ...

Amer Inst Physics2015

RANS computations of tip vortex cavitation

Mohamed Farhat, Matthieu Dreyer

The present study is related to the development of the tip vortex cavitation in Kaplan turbines. The investigation is carried out on a simplified test case consisting of a NACA0009 blade with a gap between the blade tip and the side wall. Computations with ...

Iop Publishing Ltd2015

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MATHICSE Technical Report : Fast computation of the matrix exponential for a Toeplitz matrix

Accelerated Spectral Clustering Using Graph Filtering of Random Signals

Compressive Spectral Clustering

Human computation for data, information, and knowledge management

MATHICSE Technical Report : A reduced basis approach to large-scale pseudospectra computation

Optimized Distributed Hyperparameter Search and Simulation for Lung Texture Classification in CT Using Hadoop

Subdomain and Access Pattern Privacy Trading off Confidentiality and Performance

Distributed Policy Evaluation Under Multiple Behavior Strategies

Mechanism of the Cassie-Wenzel transition via the atomistic and continuum string methods

RANS computations of tip vortex cavitation

Compressive Spectral Clustering

MATHICSE Technical Report : A reduced basis approach to large-scale pseudospectra computation

MATHICSE Technical Report : Fast computation of the matrix exponential for a Toeplitz matrix

Optimized Distributed Hyperparameter Search and Simulation for Lung Texture Classification in CT Using Hadoop

Mechanism of the Cassie-Wenzel transition via the atomistic and continuum string methods

RANS computations of tip vortex cavitation

Human computation for data, information, and knowledge management

Subdomain and Access Pattern Privacy Trading off Confidentiality and Performance

Distributed Policy Evaluation Under Multiple Behavior Strategies

Accelerated Spectral Clustering Using Graph Filtering of Random Signals