Search Results for author: Adriano L. I. Oliveira

Found 10 papers, 4 papers with code

An Investigation of Feature Selection and Transfer Learning for Writer-Independent Offline Handwritten Signature Verification

no code implementations19 Oct 2020 Victor L. F. Souza, Adriano L. I. Oliveira, Rafael M. O. Cruz, Robert Sabourin

We proposed a method based on a global validation strategy with an external archive to control overfitting during the search for the most discriminant representation.

feature selection Playing the Game of 2048 +1

KutralNet: A Portable Deep Learning Model for Fire Recognition

1 code implementation16 Aug 2020 Angel Ayala, Bruno Fernandes, Francisco Cruz, David Macêdo, Adriano L. I. Oliveira, Cleber Zanchettin

The experiments show that our model keeps high accuracy while substantially reducing the number of parameters and flops.

Entropic Out-of-Distribution Detection: Seamless Detection of Unknown Examples

2 code implementations7 Jun 2020 David Macêdo, Tsang Ing Ren, Cleber Zanchettin, Adriano L. I. Oliveira, Teresa Ludermir

In this paper, we argue that the unsatisfactory out-of-distribution (OOD) detection performance of neural networks is mainly due to the SoftMax loss anisotropy and propensity to produce low entropy probability distributions in disagreement with the principle of maximum entropy.

General Classification Metric Learning +2

Improving BPSO-based feature selection applied to offline WI handwritten signature verification through overfitting control

no code implementations7 Apr 2020 Victor L. F. Souza, Adriano L. I. Oliveira, Rafael M. O. Cruz, Robert Sabourin

This paper investigates the presence of overfitting when using Binary Particle Swarm Optimization (BPSO) to perform the feature selection in a context of Handwritten Signature Verification (HSV).

feature selection Playing the Game of 2048

A white-box analysis on the writer-independent dichotomy transformation applied to offline handwritten signature verification

no code implementations3 Apr 2020 Victor L. F. Souza, Adriano L. I. Oliveira, Rafael M. O. Cruz, Robert Sabourin

Among the advantages of this framework is its scalability to deal with some of these challenges and its ease in managing new writers, and hence of being used in a transfer learning context.

Transfer Learning

Squeezed Deep 6DoF Object Detection Using Knowledge Distillation

2 code implementations30 Mar 2020 Heitor Felix, Walber M. Rodrigues, David Macêdo, Francisco Simões, Adriano L. I. Oliveira, Veronica Teichrieb, Cleber Zanchettin

We used the LINEMOD dataset to evaluate the proposed method, and the experimental results show that the proposed method reduces the memory requirement by almost 99\% in comparison to the original architecture with the cost of reducing half the accuracy in one of the metrics.

Knowledge Distillation Object +2

Isotropy Maximization Loss and Entropic Score: Accurate, Fast, Efficient, Scalable, and Turnkey Neural Networks Out-of-Distribution Detection Based on The Principle of Maximum Entropy

1 code implementation15 Aug 2019 David Macêdo, Tsang Ing Ren, Cleber Zanchettin, Adriano L. I. Oliveira, Teresa Ludermir

Consequently, we propose IsoMax, a loss that is isotropic (distance-based) and produces high entropy (low confidence) posterior probability distributions despite still relying on cross-entropy minimization.

Data Augmentation Metric Learning +2

A writer-independent approach for offline signature verification using deep convolutional neural networks features

no code implementations26 Jul 2018 Victor L. F. Souza, Adriano L. I. Oliveira, Robert Sabourin

The use of features extracted using a deep convolutional neural network (CNN) combined with a writer-dependent (WD) SVM classifier resulted in significant improvement in performance of handwritten signature verification (HSV) when compared to the previous state-of-the-art methods.

Enhancing Batch Normalized Convolutional Networks using Displaced Rectifier Linear Units: A Systematic Comparative Study

no code implementations ICLR 2018 David Macêdo, Cleber Zanchettin, Adriano L. I. Oliveira, Teresa Ludermir

Besides, statistical significant performance assessments (p<0. 05) showed DReLU enhanced the test accuracy presented by ReLU in all scenarios.

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