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- Fernando Gama, Antonio Garcia Marques, Geert Leus, Alejandro R. Ribeiro
- IEEE Transactions on Signal Processing
- 2019

Two architectures that generalize convolutional neural networks (CNNs) for the processing of signals supported on graphs are introduced. We start with the selection graph neural network (GNN), which… (More)

- Fernando Gama, Alejandro R. Ribeiro, Joan Bruna
- ICLR
- 2019

Stability is a key aspect of data analysis. In many applications, the natural notion of stability is geometric, as illustrated for example in computer vision. Scattering transforms construct deep… (More)

- Bruno Cernuschi-Frías, Fernando Gama, Daniel Casaglia
- IEEE Transactions on Signal Processing
- 2014

A new strategy called the Deepest Minimum Criterion (DMC) is presented for optimally obtaining an affine transformation of a given unbiased estimator, when a-priori information on the parameters is… (More)

- Fernando Gama, Geert Leus, Antonio Garcia Marques, Alejandro R. Ribeiro
- IEEE Data Science Workshop (DSW)
- 2018

Convolutional neural networks (CNNs) are being applied to an increasing number of problems and fields due to their superior performance in classification and regression tasks. Since two of the key… (More)

Graph neural networks (GNNs) have been shown to replicate convolutional neural networks’ (CNNs) superior performance in many problems involving graphs. By replacing regular convolutions with linear… (More)

- Fernando Gama, Antonio Garcia Marques, Alejandro R. Ribeiro, Geert Leus
- IEEE 19th International Workshop on Signal…
- 2018

Superior performance and ease of implementation have fostered the adoption of Convolutional Neural Networks (CNN s) for a wide array of inference and reconstruction tasks. CNNs implement three basic… (More)

Universit .2013.01. Abstract Banana is a fruit produced in most tropical countries. According to the literature, the post-harvest loss is about 40% of the production. To reduce the losses, an… (More)

In order to determine the energy needed to artificially dry a product, the latent heat of vaporization of moisture in the product, hfg, must be known. Generally, the expressions for hfg reported in… (More)

- Fernando Gama, Alejandro R. Ribeiro
- IEEE International Conference on Acoustics…
- 2017

The ability to obtain accurate estimators from a set of measurements is a key factor in science and engineering. Typically, there is an inherent assumption that the measurements were taken in a… (More)

Sampling of bandlimited graph signals has welldocumented merits for dimensionality reduction, affordable storage, and online processing of streaming network data. Most existing sampling methods are… (More)