92 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal de Minas GeraisBR12 papers
- Universidade Federal do ParanáBR6 papers
- Universidade Federal do Rio Grande do SulBR6 papers
- Universidade Federal da ParaíbaBR5 papers
- Universidade Federal de LavrasBR4 papers
- Alma Mater EuropaeaSI3 papers
- China Medical UniversityTW3 papers
- China Medical University HospitalTW3 papers
- Complexity Science HubAT3 papers
- Durham UniversityGB3 papers
- Universidade de São PauloBR3 papers
- Universidade Estadual de MaringáBR3 papers
28 papers
Minimizing Risk Through Minimizing Model-Data Interaction: A Protocol For Relying on Proxy Tasks When Designing Child Sexual Abuse Imagery Detection Models
Thamiris Coelho, Leo S. F. Ribeiro, João Macedo +2
The distribution of child sexual abuse imagery (CSAI) is an ever-growing concern of our modern world; children who suffered from this heinous crime are revictimized, and the growin…
Toward Advancing License Plate Super-Resolution in Real-World Scenarios: A Dataset and Benchmark
Valfride Nascimento, Gabriel E. Lima, Rafael O. Ribeiro +3
Recent advancements in super-resolution for License Plate Recognition (LPR) have sought to address challenges posed by low-resolution (LR) and degraded images in surveillance, traf…
Enhancing License Plate Super-Resolution: A Layout-Aware and Character-Driven Approach
Valfride Nascimento, Rayson Laroca, Rafael O. Ribeiro +2
Despite significant advancements in License Plate Recognition (LPR) through deep learning, most improvements rely on high-resolution images with clear characters. This scenario doe…
A Multilevel Strategy to Improve People Tracking in a Real-World Scenario
Cristiano B. de Oliveira, Joao C. Neves, Rafael O. Ribeiro +1
The Palácio do Planalto, office of the President of Brazil, was invaded by protesters on January 8, 2023. Surveillance videos taken from inside the building were subsequently relea…
Leveraging Self-Supervised Learning for Scene Classification in Child Sexual Abuse Imagery
Pedro H. V. Valois, João Macedo, Leo S. F. Ribeiro +2
Crime in the 21st century is split into a virtual and real world. However, the former has become a global menace to people's well-being and security in the latter. The challenges i…
Super-Resolution of License Plate Images Using Attention Modules and Sub-Pixel Convolution Layers
Valfride Nascimento, Rayson Laroca, Jorge de A. Lambert +2
Recent years have seen significant developments in the field of License Plate Recognition (LPR) through the integration of deep learning techniques and the increasing availability…
Embedding Aggregation for Forensic Facial Comparison
Rafael Oliveira Ribeiro, João C. R. Neves, Arnout C. C. Ruifrok +1
In forensic facial comparison, questioned-source images are usually captured in uncontrolled environments, with non-uniform lighting, and from non-cooperative subjects. The poor qu…
Deep Learning Criminal Networks
Haroldo V. Ribeiro, Diego D. Lopes, Arthur A. B. Pessa +6
Recent advances in deep learning methods have enabled researchers to develop and apply algorithms for the analysis and modeling of complex networks. These advances have sparked a s…
Combining Attention Module and Pixel Shuffle for License Plate Super-Resolution
Valfride Nascimento, Rayson Laroca, Jorge de A. Lambert +2
The License Plate Recognition (LPR) field has made impressive advances in the last decade due to novel deep learning approaches combined with the increased availability of training…
Face Super-Resolution Using Stochastic Differential Equations
Marcelo dos Santos, Rayson Laroca, Rafael O. Ribeiro +3
Diffusion models have proven effective for various applications such as images, audio and graph generation. Other important applications are image super-resolution and the solution…
Machine Learning Partners in Criminal Networks
Diego D. Lopes, Bruno R. da Cunha, Alvaro F. Martins +5
Recent research has shown that criminal networks have complex organizational structures, but whether this can be used to predict static and dynamic properties of criminal networks…
Universality of political corruption networks
Alvaro F. Martins, Bruno R. da Cunha, Quentin S. Hanley +3
Corruption crimes demand highly coordinated actions among criminal agents to succeed. But research dedicated to corruption networks is still in its infancy and indeed little is kno…
Empirical determination of the optimum attack for fragmentation of modular networks
Carolina de Abreu, Bruno Requião da Cunha, Sebastián Gonçalves
All possible removals of nodes from networks of size are performed in order to find the optimal set of nodes which fragments the original network into the smallest la…
The web of federal crimes in Brazil: topology, weaknesses, and control
Bruno Requião da Cunha, Sebastian Gonçalves
Law enforcement and intelligence agencies worldwide struggle to find effective ways to fight and control organized crime. However, illegal networks operate outside the law and much…
Effective potential in Lorentz-breaking field theory models
A. P. Baeta Scarpelli, L. C. T. Brito, J. C. C. Felipe +2
We calculate explicitly the one-loop effective potential in different Lorentz-breaking field theory models. First, we consider a Yukawa-like theory and, then, some examples of Lore…
Tree-level equivalence between a Lorentz-violating extension of QED and its dual model in electron-electron scattering
Giuliano R. Toniolo, H. G. Fargnoli, L. C. T. Brito +1
S-matrix amplitudes for the electron-electron scattering are calculated in order to verify the quantum equivalence of dual models. We used an extended Quantum Electrodynamics with…
Remarks on a Lorentz-breaking 4D chiral gauge theory
A. P. Baêta Scarpelli, M. Gomes, A. Yu. Petrov +1
We investigate a Lorentz-violating chiral model composed by two fermions, a complex scalar field and a gauge field. We show that by convenientely adjusting the parameters of the mo…
Subtleties in the beta function calculation of N=1 supersymmetric gauge theories
A. L. Cherchiglia, Marcos Sampaio, B. Hiller +1
We investigate some peculiarities in the calculation of the two-loop beta-function of supersymmetric models which are intimately related to the so-called "Anomaly Puzzle". Th…
On the anomalies in Lorentz-breaking theories
A. P. Baeta Scarpelli, T. Mariz, J. R. Nascimento +1
In this paper, we discuss the chiral anomaly in a Lorentz-breaking extension of QED which, besides the common terms that are present in the Standard Model Extension, includes some…
Complex networks vulnerability to module-based attacks
Bruno Requião da Cunha, Juan Carlos González-Avella, Sebastián Gonçalves
In the multidisciplinary field of Network Science, optimization of procedures for efficiently breaking complex networks is attracting much attention from practical points of view.…
On the duality in CPT-even Lorentz-breaking theories
A. P. Baeta Scarpelli, J. R. Nascimento, A. Yu. Petrov +1
In this paper, we generalize the duality between self-dual and Maxwell-Chern-Simons theories for the case of a CPT-even Lorentz-breaking extension of these theories. The duality is…
Guises and Disguises of Quadratic Divergences
A. L. Cherchiglia, A. R. Vieira, Brigitte Hiller +2
In this contribution, we present a new perspective on the control of quadratic divergences in quantum field theory, in general, and in the Higgs naturalness problem, in particular.…
Dual embedding of extended models with a Lorentz-breaking mass term
H. G. Fargnoli, L. C. T. Brito, A. P. Baêta Scarpelli +1
In this paper, we investigate a CPT-even model with a Lorentz-violating mass term. Such kind of models may present very interesting features like superluminal modes of propagation…
Arbitrariness in the gravitational Chern-Simons-like term induced radiatively
J. C. C. Felipe, A. R. Vieira, A. L. Cherchiglia +2
Lorentz violation through a radiatively induced Chern-Simons-like term in a fermionic theory embedded in linearized quantum gravity with a Lorentz- and CPT-violating axial-vector t…