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417 results on '"Dias, Zanoni"'

2. P-NOC: adversarial training of CAM generating networks for robust weakly supervised semantic segmentation priors

Author

David, Lucas, Pedrini, Helio, and Dias, Zanoni

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning
Abstract

Weakly Supervised Semantic Segmentation (WSSS) techniques explore individual regularization strategies to refine Class Activation Maps (CAMs). In this work, we first analyze complementary WSSS techniques in the literature, their segmentation properties, and the conditions in which they are most effective. Based on these findings, we devise two new techniques: P-NOC and CCAM-H. In the first, we promote the conjoint training of two adversarial CAM generating networks: the generator, which progressively learns to erase regions containing class-specific features, and a discriminator, which is refined to gradually shift its attention to new class discriminant features. In the latter, we employ the high quality pseudo-segmentation priors produced by P-NOC to guide the learning to saliency information in a weakly supervised fashion. Finally, we employ both pseudo-segmentation priors and pseudo-saliency proposals in the random walk procedure, resulting in higher quality pseudo-semantic segmentation masks, and competitive results with the state of the art., Comment: 19 pages, 10 figures

Published
2023

3. Maximum Alternating Balanced Cycle Decomposition and Applications in Sorting by Intergenic Operations Problems

Author

Brito, Klairton Lima, Alexandrino, Alexsandro Oliveira, Siqueira, Gabriel, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Scornavacca, Celine, editor, and Hernández-Rosales, Maribel, editor

Published
2024
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5. Algorithms for the Maximum Eulerian Cycle Decomposition Problem

Author

Pinheiro, Pedro O., Alexandrino, Alexsandro Oliveira, Oliveira, Andre R., de Souza, Cid C., and Dias, Zanoni

Subjects
Computer Science - Data Structures and Algorithms
Abstract

Given an Eulerian graph G, in the Maximum Eulerian Cycle Decomposition problem, we are interested in finding a collection of edge-disjoint cycles {E_1, E_2, ..., E_k} in G such that all edges of G are in exactly one cycle and k is maximum. We present an algorithm to solve the pricing problem of a column generation Integer Linear Programming (ILP) model introduced by Lancia and Serafini (2016). Furthermore, we propose a greedy heuristic, which searches for minimum size cycles starting from a random vertex, and a heuristic based on partially solving the ILP model. We performed tests comparing the three approaches in relation to the quality of solutions and execution time, using distinct sets of Eulerian graphs, each set grouping graphs with different numbers of vertices and edges. Our experimental results show that the ILP based heuristic outperforms the other methods.

Published
2022

6. On the Complexity of Some Variations of Sorting by Transpositions

Author

Alexandrino, Alexsandro Oliveira, Oliveira, Andre Rodrigues, Dias, Ulisses, and Dias, Zanoni

Subjects
Computer Science - Computational Complexity, F.2.0, G.2.1
Abstract

One of the main challenges in Computational Biology is to find the evolutionary distance between two organisms. In the field of comparative genomics, one way to estimate such distance is to find a minimum cost sequence of rearrangements (large scale mutations) needed to transform one genome into another, which is called the rearrangement distance. In the past decades, these problems were studied considering many types of rearrangements (such as reversals, transpositions, transreversals, and revrevs) and considering the same weight for all rearrangements, or different weights depending on the types of rearrangements. The complexity of the problems involving reversals, transpositions, and both rearrangements is known, even though the hardness proof for the problem combining reversals and transpositions was recently given. In this paper, we enhance the knowledge for these problems by proving that models involving transpositions alongside reversals, transreversals, and revrevs are NP-hard, considering weights w1 for reversals and w2 for the other rearrangements such that w2/w1 is less than or equal to 1.5. In addition, we address a cost function related to the number of fragmentations caused by a rearrangement, proving that the problem of finding a minimum cost sorting sequence, considering the fragmentation cost function with some restrictions, is NP-hard for transpositions and the combination of reversals and transpositions.

Published
2022
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9. MinMax-CAM: Increasing Precision of Explaining Maps by Contrasting Gradient Signals and Regularizing Kernel Usage

Author

David, Lucas, Pedrini, Helio, Dias, Zanoni, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, de Sousa, A. Augusto, editor, Debattista, Kurt, editor, Paljic, Alexis, editor, Ziat, Mounia, editor, Hurter, Christophe, editor, Purchase, Helen, editor, Farinella, Giovanni Maria, editor, Radeva, Petia, editor, and Bouatouch, Kadi, editor

Published
2023
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10. The Multi-attribute Fairer Cover Problem

Author

Dantas, Ana Paula S., de Oliveira, Gabriel Bianchin, Pedrini, Helio, de Souza, Cid C., Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Naldi, Murilo C., editor, and Bianchi, Reinaldo A. C., editor

Published
2023
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11. Approximating Rearrangement Distances with Replicas and Flexible Intergenic Regions

Author

Siqueira, Gabriel, Oliveira Alexandrino, Alexsandro, Rodrigues Oliveira, Andre, Jean, Géraldine, Fertin, Guillaume, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Guo, Xuan, editor, Mangul, Serghei, editor, Patterson, Murray, editor, and Zelikovsky, Alexander, editor

Published
2023
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12. Block Interchange and Reversal Distance on Unbalanced Genomes

Author

Alexandrino, Alexsandro Oliveira, Siqueira, Gabriel, Brito, Klairton Lima, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Reis, Marcelo S., editor, and de Melo-Minardi, Raquel C., editor

Published
2023
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13. Prediction of Protein Molecular Functions Using Transformers

Author

de Mello, Felipe Lopes, de Oliveira, Gabriel Bianchin, Pedrini, Helio, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Rutkowski, Leszek, editor, Scherer, Rafał, editor, Korytkowski, Marcin, editor, Pedrycz, Witold, editor, Tadeusiewicz, Ryszard, editor, and Zurada, Jacek M., editor

Published
2023
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17. Transposition Distance Considering Intergenic Regions for Unbalanced Genomes

Author

Oliveira Alexandrino, Alexsandro, Rodrigues Oliveira, Andre, Jean, Géraldine, Fertin, Guillaume, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Bansal, Mukul S., editor, Cai, Zhipeng, editor, and Mangul, Serghei, editor

Published
2022
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18. A 1.375-Approximation Algorithm for Sorting by Transpositions with Faster Running Time

Author

Alexandrino, Alexsandro Oliveira, Brito, Klairton Lima, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Scherer, Nicole M., editor, and de Melo-Minardi, Raquel C., editor

Published
2022
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19. Protein Molecular Function Annotation Based on Transformer Embeddings

Author

de Oliveira, Gabriel Bianchin, Pedrini, Helio, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Xavier-Junior, João Carlos, editor, and Rios, Ricardo Araújo, editor

Published
2022
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20. Sorting by k-Cuts on Signed Permutations

Author

Rodrigues Oliveira, Andre, Oliveira Alexandrino, Alexsandro, Jean, Géraldine, Fertin, Guillaume, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Jin, Lingling, editor, and Durand, Dannie, editor

Published
2022
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21. A New Approach for the Reversal Distance with Indels and Moves in Intergenic Regions

Author

Lima Brito, Klairton, Rodrigues Oliveira, Andre, Oliveira Alexandrino, Alexsandro, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Jin, Lingling, editor, and Durand, Dannie, editor

Published
2022
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24. Data-Augmented Emoji Approach to Sentiment Classification of Tweets

Author

de Barros, Tiago Martinho, Pedrini, Helio, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Tavares, João Manuel R. S., editor, Papa, João Paulo, editor, and González Hidalgo, Manuel, editor

Published
2021
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25. Heuristics for Cycle Packing of Adjacency Graphs for Genomes with Repeated Genes

Author

Siqueira, Gabriel, Oliveira, Andre Rodrigues, Alexandrino, Alexsandro Oliveira, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Stadler, Peter F., editor, Walter, Maria Emilia M. T., editor, Hernandez-Rosales, Maribel, editor, and Brigido, Marcelo M., editor

Published
2021
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26. Deep Learning-Based COVID-19 Diagnostics of Low-Quality CT Images

Author

Ferber, Daniel, Vieira, Felipe, Dalben, João, Ferraz, Mariana, Sato, Nicholas, Oliveira, Gabriel, Padilha, Rafael, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Stadler, Peter F., editor, Walter, Maria Emilia M. T., editor, Hernandez-Rosales, Maribel, editor, and Brigido, Marcelo M., editor

Published
2021
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27. Authentication of Vincent van Gogh’s Work

Author

David, Lucas Oliveira, Pedrini, Helio, Dias, Zanoni, Rocha, Anderson, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Tsapatsoulis, Nicolas, editor, Panayides, Andreas, editor, Theocharides, Theo, editor, Lanitis, Andreas, editor, Pattichis, Constantinos, editor, and Vento, Mario, editor

Published
2021
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28. MMEC: Multi-Modal Ensemble Classifier for Protein Secondary Structure Prediction

Author

de Oliveira, Gabriel Bianchin, Pedrini, Helio, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Tsapatsoulis, Nicolas, editor, Panayides, Andreas, editor, Theocharides, Theo, editor, Lanitis, Andreas, editor, Pattichis, Constantinos, editor, and Vento, Mario, editor

Published
2021
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29. Reversal Distance on Genomes with Different Gene Content and Intergenic Regions Information

Author

Alexandrino, Alexsandro Oliveira, Brito, Klairton Lima, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Martín-Vide, Carlos, editor, Vega-Rodríguez, Miguel A., editor, and Wheeler, Travis, editor

Published
2021
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30. Reversals Distance Considering Flexible Intergenic Regions Sizes

Author

Brito, Klairton Lima, Alexandrino, Alexsandro Oliveira, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Martín-Vide, Carlos, editor, Vega-Rodríguez, Miguel A., editor, and Wheeler, Travis, editor

Published
2021
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36. Sorting by k-Cuts on Signed Permutations

Author

Rodrigues Oliveira, Andre, primary, Oliveira Alexandrino, Alexsandro, additional, Jean, Géraldine, additional, Fertin, Guillaume, additional, Dias, Ulisses, additional, and Dias, Zanoni, additional

Published
2022
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37. Classification of Musculoskeletal Abnormalities with Convolutional Neural Networks

Author

Sato, Guilherme Tiaki Sassai, da Silva Segundo, Leodécio Braz, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Setubal, João C., editor, and Silva, Waldeyr Mendes, editor

Published
2020
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38. COVID-19 X-ray Image Diagnostic with Deep Neural Networks

Author

Oliveira, Gabriel, Padilha, Rafael, Dorte, André, Cereda, Luis, Miyazaki, Luiz, Lopes, Maurício, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Setubal, João C., editor, and Silva, Waldeyr Mendes, editor

Published
2020
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39. ImTeNet: Image-Text Classification Network for Abnormality Detection and Automatic Reporting on Musculoskeletal Radiographs

Author

Braz, Leodécio, Teixeira, Vinicius, Pedrini, Helio, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Setubal, João C., editor, and Silva, Waldeyr Mendes, editor

Published
2020
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40. Sorting by Reversals and Transpositions with Proportion Restriction

Author

Brito, Klairton Lima, Alexandrino, Alexsandro Oliveira, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Setubal, João C., editor, and Silva, Waldeyr Mendes, editor

Published
2020
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41. Heuristics for Breakpoint Graph Decomposition with Applications in Genome Rearrangement Problems

Author

Pinheiro, Pedro Olímpio, Alexandrino, Alexsandro Oliveira, Oliveira, Andre Rodrigues, de Souza, Cid Carvalho, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Setubal, João C., editor, and Silva, Waldeyr Mendes, editor

Published
2020
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42. Block-Interchange Distance Considering Intergenic Regions

Author

Dias, Ulisses, Oliveira, Andre Rodrigues, Brito, Klairton Lima, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Kowada, Luis, editor, and de Oliveira, Daniel, editor

Published
2020
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43. Heuristics for Reversal Distance Between Genomes with Duplicated Genes

Author

Siqueira, Gabriel, Brito, Klairton Lima, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Martín-Vide, Carlos, editor, Vega-Rodríguez, Miguel A., editor, and Wheeler, Travis, editor

Published
2020
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44. A 3.5-Approximation Algorithm for Sorting by Intergenic Transpositions

Author

Oliveira, Andre Rodrigues, Jean, Géraldine, Fertin, Guillaume, Brito, Klairton Lima, Dias, Ulisses, Dias, Zanoni, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Martín-Vide, Carlos, editor, Vega-Rodríguez, Miguel A., editor, and Wheeler, Travis, editor

Published
2020
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48. Sorting by Reversals, Transpositions, and Indels on Both Gene Order and Intergenic Sizes

Author

Brito, Klairton Lima, Jean, Géraldine, Fertin, Guillaume, Oliveira, Andre Rodrigues, Dias, Ulisses, Dias, Zanoni, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Cai, Zhipeng, editor, Skums, Pavel, editor, and Li, Min, editor

Published
2019
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