Search Results for author: Aina Ferrà

Found 4 papers, 1 papers with code

A topological classifier to characterize brain states: When shape matters more than variance

no code implementations7 Mar 2023 Aina Ferrà, Gloria Cecchini, Fritz-Pere Nobbe Fisas, Carles Casacuberta, Ignasi Cos

Despite the remarkable accuracies attained by machine learning classifiers to separate complex datasets in a supervised fashion, most of their operation falls short to provide an informed intuition about the structure of data, and, what is more important, about the phenomena being characterized by the given datasets.

Decision Making Dimensionality Reduction +3

Importance attribution in neural networks by means of persistence landscapes of time series

no code implementations6 Feb 2023 Aina Ferrà, Carles Casacuberta, Oriol Pujol

We propose and implement a method to analyze time series with a neural network using a matrix of area-normalized persistence landscapes obtained through topological data analysis.

Time Series Time Series Analysis +1

Reconstruction of univariate functions from directional persistence diagrams

no code implementations3 Mar 2022 Aina Ferrà, Carles Casacuberta, Oriol Pujol

We describe a method for approximating a single-variable function $f$ using persistence diagrams of sublevel sets of $f$ from height functions in different directions.

Food Ingredients Recognition through Multi-label Learning

2 code implementations27 Jul 2017 Marc Bolaños, Aina Ferrà, Petia Radeva

Automatically constructing a food diary that tracks the ingredients consumed can help people follow a healthy diet.

Multi-Label Classification Multi-Label Learning

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