Search Results for author: Cristina Garcia-Cardona

Found 8 papers, 0 papers with code

Convolutional Dictionary Learning: A Comparative Review and New Algorithms

no code implementations9 Sep 2017 Cristina Garcia-Cardona, Brendt Wohlberg

Convolutional sparse representations are a form of sparse representation with a dictionary that has a structure that is equivalent to convolution with a set of linear filters.

Dictionary Learning

First and Second Order Methods for Online Convolutional Dictionary Learning

no code implementations31 Aug 2017 Jialin Liu, Cristina Garcia-Cardona, Brendt Wohlberg, Wotao Yin

Convolutional sparse representations are a form of sparse representation with a structured, translation invariant dictionary.

Dictionary Learning Second-order methods +1

Online Convolutional Dictionary Learning

no code implementations29 Jun 2017 Jialin Liu, Cristina Garcia-Cardona, Brendt Wohlberg, Wotao Yin

While a number of different algorithms have recently been proposed for convolutional dictionary learning, this remains an expensive problem.

Dictionary Learning

Multiclass Semi-Supervised Learning on Graphs using Ginzburg-Landau Functional Minimization

no code implementations6 Jun 2013 Cristina Garcia-Cardona, Arjuna Flenner, Allon G. Percus

We present a graph-based variational algorithm for classification of high-dimensional data, generalizing the binary diffuse interface model to the case of multiple classes.

Classification General Classification

Spectral Clustering with Epidemic Diffusion

no code implementations11 Mar 2013 Laura M. Smith, Kristina Lerman, Cristina Garcia-Cardona, Allon G. Percus, Rumi Ghosh

Existing methods for spectral clustering use the eigenvalues and eigenvectors of the graph Laplacian, an operator that is closely associated with random walks on graphs.

Clustering

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