Search Results for author: Luis C. S. Afonso

Found 4 papers, 0 papers with code

Hierarchical Learning Using Deep Optimum-Path Forest

no code implementations18 Feb 2021 Luis C. S. Afonso, Clayton R. Pereira, Silke A. T. Weber, Christian Hook, Alexandre X. Falcão, João P. Papa

Bag-of-Visual Words (BoVW) and deep learning techniques have been widely used in several domains, which include computer-assisted medical diagnoses.

BIG-bench Machine Learning

Information Ranking Using Optimum-Path Forest

no code implementations16 Feb 2021 Nathalia Q. Ascenção, Luis C. S. Afonso, Danilo Colombo, Luciano Oliveira, João P. Papa

The task of learning to rank has been widely studied by the machine learning community, mainly due to its use and great importance in information retrieval, data mining, and natural language processing.

BIG-bench Machine Learning Image Retrieval +3

Learning Visual Representations with Optimum-Path Forest and its Applications to Barrett's Esophagus and Adenocarcinoma Diagnosis

no code implementations18 Jan 2021 Luis A. de Souza Jr., Luis C. S. Afonso, Alanna Ebigbo, Andreas Probst, Helmut Messmann, Robert Mendel, Christoph Palm, João P. Papa

In this work, we introduce the unsupervised Optimum-Path Forest (OPF) classifier for learning visual dictionaries in the context of Barrett's esophagus (BE) and automatic adenocarcinoma diagnosis.

Data Augmentation

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