no code implementations • 17 Jun 2022 • Jonathan de Matos, Luiz Eduardo Soares de Oliveira, Alceu de Souza Britto Junior, Alessandro Lameiras Koerich
The core of such an approach is a loss function that computes the distances between instances of interest and support vectors.
no code implementations • 21 Apr 2022 • Steve T. M. Ataky, Diego Saqui, Jonathan de Matos, Alceu S. Britto Jr., Alessandro L. Koerich
Image pyramid multiresolution representations are a useful data structure for image analysis and manipulation over a spectrum of spatial scales.
no code implementations • 7 Feb 2021 • Jonathan de Matos, Steve Tsham Mpinda Ataky, Alceu de Souza Britto Jr., Luiz Eduardo Soares de Oliveira, Alessandro Lameiras Koerich
Histopathological images (HIs) are the gold standard for evaluating some types of tumors for cancer diagnosis.
no code implementations • 31 Jan 2020 • Steve Tsham Mpinda Ataky, Jonathan de Matos, Alceu de S. Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich
Such a problem is troublesome because most of the ML algorithms attempt to optimize a loss function that does not take into account the data imbalance.
no code implementations • 28 May 2019 • Jonathan de Matos, Alceu de S. Britto Jr., Luiz E. S. de Oliveira, Alessandro L. Koerich
Biopsies are the gold standard for breast cancer diagnosis.
no code implementations • 26 Apr 2019 • Alexandre Reeberg Mello, Jonathan de Matos, Marcelo R. Stemmer, Alceu de Souza Britto Jr., Alessandro Lameiras Koerich
In this paper, we propose the use of a black-box optimization method called deterministic Mesh Adaptive Direct Search (MADS) algorithm with orthogonal directions (Ortho-MADS) for the selection of hyperparameters of Support Vector Machines with a Gaussian kernel.
no code implementations • 16 Apr 2019 • Jonathan de Matos, Alceu de S. Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich
This work proposes a classification approach for breast cancer histopathologic images (HI) that uses transfer learning to extract features from HI using an Inception-v3 CNN pre-trained with ImageNet dataset.
no code implementations • 16 Apr 2019 • Jonathan de Matos, Alceu de Souza Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich
In this work we present a literature review about the computing techniques to process HI, including shallow and deep methods.