Search Results for author: Martha Dais Ferreira

Found 5 papers, 1 papers with code

A semi-supervised methodology for fishing activity detection using the geometry behind the trajectory of multiple vessels

1 code implementation12 Jul 2022 Martha Dais Ferreira, Gabriel Spadon, Amilcar Soares, Stan Matwin

To this end, we leverage the unsupervised nature of cluster analysis to label the trajectory geometry highlighting the changes in the vessel's moving pattern which tends to indicate fishing activity.

Action Detection Activity Detection +2

SGORNN: Combining Scalar Gates and Orthogonal Constraints in Recurrent Networks

no code implementations29 Sep 2021 William Keith Taylor-Melanson, Martha Dais Ferreira, Stan Matwin

Our experimental results on the addition problem confirm that our combination of orthogonal and scalar gated RNNs are able to outperform both predecessor models on long sequences using only a single RNN cell.

Language Modelling

Active learning for medical code assignment

no code implementations12 Apr 2021 Martha Dais Ferreira, Michal Malyska, Nicola Sahar, Riccardo Miotto, Fernando Paulovich, Evangelos Milios

Machine Learning (ML) is widely used to automatically extract meaningful information from Electronic Health Records (EHR) to support operational, clinical, and financial decision-making.

Active Learning Decision Making +4

Providing theoretical learning guarantees to Deep Learning Networks

no code implementations28 Nov 2017 Rodrigo Fernandes de Mello, Martha Dais Ferreira, Moacir Antonelli Ponti

Deep Learning (DL) is one of the most common subjects when Machine Learning and Data Science approaches are considered.

Learning Theory

Acoustic Modeling Using a Shallow CNN-HTSVM Architecture

no code implementations27 Jun 2017 Christopher Dane Shulby, Martha Dais Ferreira, Rodrigo F. de Mello, Sandra Maria Aluisio

More importantly we isolate the performance of the acoustic model and provide results on both the frame and phoneme level considering the true robustness of the model.

speech-recognition Speech Recognition

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