Alexandre L. M. Levada

64 papers B 6C 6Misc 3Journal 28Unranked 21

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	GEO-NLM: Non-Local Single Image Denoising With Geodesic Distances in Weighted Graphs. IEEE Access Adriano dos Reis Carvalho, Alexandre L. M. Levada
2025	—	`conf`	Deep Learning for Protoplanetary Disk Classification from Hubble Images: A Comparative Study on Imbalanced Data. SIBGRAPI Marília M. Fernandez, Alexandre L. M. Levada, Pedro Henrique Bugatti
2025	J	`jnl`	Entropic Semi-Supervised Dimensionality Reduction for Distance Metric Learning. Int. J. Uncertain. Fuzziness Knowl. Based Syst. Alexandre L. M. Levada
2025	J	`jnl`	Minimum Information Trees for High Dimensional Data Visualization in Clustering. IEEE Access Alexandre L. M. Levada
2024	J	`jnl`	An information-geometric approach for network decomposition using the q-state Potts model. CoRR Alexandre L. M. Levada
2024	J	`jnl`	Dual Non-Local Means: a two-stage information-theoretic filter for image denoising. Multim. Tools Appl. André R. de Brito, Alexandre L. M. Levada
2024	J	`jnl`	Information theory divergences in principal component analysis. Pattern Anal. Appl. Eduardo K. Nakao, Alexandre L. M. Levada
2024	J	`jnl`	Probabilistic Nearest Neighbors Based Locality Preserving Projections for Unsupervised Metric Learning. J. Univers. Comput. Sci. Alaor Cervati Neto, Alexandre L. M. Levada
2024	J	`jnl`	The geodesic dispersion phenomenon in random fields dynamics. CoRR Alexandre L. M. Levada
2023	J	`jnl`	Entropic principal component analysis using Cauchy-Schwarz divergence. Knowl. Inf. Syst. Eduardo K. Nakao, Alexandre L. M. Levada
2022	B	`conf`	A Curvature based Isometric Feature Mapping. ICPR Alexandre L. M. Levada
2022	J	`jnl`	On the Kullback-Leibler divergence between pairwise isotropic Gaussian-Markov random fields. CoRR Alexandre L. M. Levada
2022	J	`jnl`	On the numerical computation of Fisher-Rao based distances and KL-divergences between Gaussian random fields. J. Comput. Sci. Alexandre L. M. Levada
2022	J	`jnl`	The Curvature Effect in Gaussian Random Fields. CoRR Alexandre L. M. Levada
2021	—	`conf`	A Kullback-Leibler Divergence-Based Locally Linear Embedding Method: A Novel Parametric Approach for Cluster Analysis. BRACIS (1) Alexandre L. M. Levada, Michel Ferreira Cardia Haddad
2021	J	`jnl`	Closed-form Bayesian image denoising: improving the adaptive Wiener filter through pairwise Gaussian-Markov random fields. Commun. Stat. Simul. Comput. Alexandre L. M. Levada
2021	J	`jnl`	Geodesic curves in Gaussian random field manifolds. CoRR Alexandre L. M. Levada
2021	—	`conf`	Improving Parametric PCA Using KL-divergence Between Gaussian-Markov Random Field Models. ICCSA (2) Alexandre L. M. Levada
2021	—	`conf`	Non-local medians filter for joint Gaussian and impulsive image denoising. SIBGRAPI Alexandre L. M. Levada
2021	J	`jnl`	On the curvatures of Gaussian random field manifolds. CoRR Alexandre L. M. Levada
2021	J	`jnl`	PCA-KL: a parametric dimensionality reduction approach for unsupervised metric learning. Adv. Data Anal. Classif. Alexandre L. M. Levada
2020	—	`conf`	Combining Deep and Manifold Learning For Nonlinear Feature Extraction in Texture Images. EUSIPCO Cédrick Bamba Nsimba, Alexandre L. M. Levada
2020	—	`conf`	Exploring Information Theory and Gaussian Markov Random Fields for Color Texture Classification. ICIAR (2) Cédrick Bamba Nsimba, Alexandre L. M. Levada
2020	—	`conf`	ISOMAP-KL: a parametric approach for unsupervised metric learning. SIBGRAPI Alaor Cervati Neto, Alexandre L. M. Levada
2020	J	`jnl`	Parametric PCA for unsupervised metric learning. Pattern Recognit. Lett. Alexandre L. M. Levada
2020	—	`conf`	Unsupervised Learning and Feature Extraction in Hyperspectral Imagery. ICCSA (1) Eduardo K. Nakao, Alexandre L. M. Levada
2019	—	`conf`	A Sparse Filtering-Based Approach for Non-blind Deep Image Denoising. ICANN (Workshop) Rafael Goncalves Pires, Daniel Felipe Silva Santos, Gustavo Botelho de Souza, Alexandre L. M. Levada, João Paulo Papa
2019	J	`jnl`	An information-theoretic wavelet-based texture descriptor using Gaussian Markov random field models. Multim. Tools Appl. Cédrick Bamba Nsimba, Alexandre L. M. Levada
2019	—	`conf`	Nonlinear Dimensionality Reduction in Texture Classification: Is Manifold Learning Better Than PCA? ICCS (5) Cédrick Bamba Nsimba, Alexandre L. M. Levada
2017	C	`conf`	A Deep Boltzmann Machine-Based Approach for Robust Image Denoising. CIARP Rafael Goncalves Pires, Daniel F. S. Santos, Gustavo Botelho de Souza, Aparecido Nilceu Marana, Alexandre L. M. Levada, João Paulo Papa
2017	J	`jnl`	Information geometry, simulation and complexity in Gaussian random fields. CoRR Alexandre L. M. Levada
2016	—	`conf`	A Graph-Based Approach for Contextual Image Segmentation. SIBGRAPI Gustavo Botelho de Souza, Gabriel M. Alves, Alexandre L. M. Levada, Paulo Estevão Cruvinel, Aparecido Nilceu Marana
2016	C	`conf`	A block-based Markov random field model estimation for contextual classification using Optimum-Path Forest. ISCAS Daniel Osaku, Alexandre L. M. Levada, João Paulo Papa
2016	J	`jnl`	Fine-Tuning Contextual-Based Optimum-Path Forest for Land-Cover Classification. IEEE Geosci. Remote. Sens. Lett. Daniel Osaku, Danillo Roberto Pereira, Alexandre L. M. Levada, João Paulo Papa
2016	J	`jnl`	Information geometry, simulation and complexity in Gaussian random fields. Monte Carlo Methods Appl. Alexandre L. M. Levada
2016	J	`jnl`	Nonlocal Markovian models for image denoising. J. Electronic Imaging Denis H. P. Salvadeo, Nelson D. A. Mascarenhas, Alexandre L. M. Levada
2015	—	`conf`	Double Noise Filtering in CT: Pre- and Post-Reconstruction. SIBGRAPI Vinicius C. Assis, Denis H. P. Salvadeo, Nelson D. A. Mascarenhas, Alexandre L. M. Levada
2015	J	`jnl`	Improving land cover classification through contextual-based optimum-path forest. Inf. Sci. Daniel Osaku, Rodrigo Y. M. Nakamura, Luís A. M. Pereira, Rodrigo Jose Pisani, Alexandre L. M. Levada, Fabio A. M. Cappabianco, Alexandre X. Falcão, João Paulo Papa
2014	B	`conf`	Denoising based on non local means for ultrasound images with simultaneous multiple noise distributions. ICIP Denis H. P. Salvadeo, Isabelle Bloch, Florence Tupin, Nelson D. A. Mascarenhas, Alexandre L. M. Levada, Charles-Alban Deledalle, Sonia Dahdouh
2014	J	`jnl`	Learning from Complex Systems: On the Roles of Entropy and Fisher Information in Pairwise Isotropic Gaussian Markov Random Fields. Entropy Alexandre L. M. Levada
2014	C	`conf`	On the Influence of Markovian Models for Contextual-Based Optimum-Path Forest Classification. CIARP Daniel Osaku, Alexandre L. M. Levada, João P. Papa
2013	—	`conf`	OPF-MRF: Optimum-Path Forest and Markov Random Fields for Contextual-Based Image Classification. CAIP (2) Rodrigo Nakamura, Daniel Osaku, Alexandre L. M. Levada, Fabio Augusto Cappabianco, Alexandre X. Falcão, João Paulo Papa
2013	B	`conf`	Optimizing Contextual-Based Optimum-Forest Classification through Swarm Intelligence. ACIVS Daniel Osaku, Rodrigo Nakamura, João Paulo Papa, Alexandre L. M. Levada, Fabio A. M. Cappabianco, Alexandre X. Falcão
2012	—	`conf`	Contextual Filtering of CT Images Using Markovian Wiener Filters with a Non Local Means Approach for Statistical Estimation. SIBGRAPI Denis H. P. Salvadeo, Nelson D. A. Mascarenhas, Alexandre L. M. Levada
2011	C	`conf`	A Markov Random Field Model for Combining Optimum-Path Forest Classifiers Using Decision Graphs and Game Strategy Approach. CIARP Moacir P. Ponti Jr., João Paulo Papa, Alexandre L. M. Levada
2011	C	`conf`	An adaptive approach for contextual audio denoising using local Fisher information. ISCAS Alexandre L. M. Levada, Débora C. Corrêa
2011	—	`conf`	Finding Community Structure in Music Genres Networks. ISMIR Débora C. Corrêa, Alexandre L. M. Levada, Luciano da F. Costa
2011	J	`jnl`	Improving Face Recognition Performance Using RBPCA MaxLike and Information Fusion. Comput. Sci. Eng. Denis H. P. Salvadeo, Nelson D. A. Mascarenhas, Jander Moreira, Alexandre L. M. Levada, Débora C. Corrêa
2011	J	`jnl`	On the Spatial Dependence Structure of Isotropic Pairwise Gaussian-Markov Random Field Models CoRR Alexandre L. M. Levada
2010	J	`jnl`	A novel MAP-MRF approach for multispectral image contextual classification using combination of suboptimal iterative algorithms. Pattern Recognit. Lett. Alexandre L. M. Levada, Nelson D. A. Mascarenhas, Alberto Tannús
2009	—	`conf`	Fast and accurate holistic face recognition using Optimum-Path Forest. DPS João P. Papa, Alexandre X. Falcão, Alexandre L. M. Levada, Débora C. Corrêa, Denis H. P. Salvadeo, Nelson D. A. Mascarenhas
2009	—	`conf`	GSAShrink: A Novel Iterative Approach for Wavelet-Based Image Denoising. SIBGRAPI Alexandre L. M. Levada, Alberto Tannús, Nelson D. A. Mascarenhas
2009	B	`conf`	Map-MRF Super-Resolution Image Reconstruction using Maximum Pseudo-Likelihood parameter estimation. ICIP Ana Luísa Dine Martins, Alexandre L. M. Levada, Murillo R. P. Homem, Nelson D. A. Mascarenhas
2008	—	`conf`	A Novel Model for Combining Projection and Image Filtering Using Kalman and Discrete Wavelet Transform in Computerized Tomography. CSE Marcos Antonio de Matos Laia, Alexandre L. M. Levada, Leonardo C. Botega, Maurício Fernando Lima Pereira, Paulo Estevão Cruvinel, Álvaro Macedo
2008	B	`conf`	A novel pseudo-likelihood equation for Potts MRF model parameter estimation in image analysis. ICIP Alexandre L. M. Levada, Nelson D. A. Mascarenhas, Alberto Tannús
2008	—	`conf`	Improving Potts MRF Model Parameter Estimation in Image Analysis. CSE Alexandre L. M. Levada, Nelson D. A. Mascarenhas, Alberto Tannús
2008	—	`conf`	Improving the Learning Speed in 2-Layered LSTM Network by Estimating the Configuration of Hidden Units and Optimizing Weights Initialization. ICANN (1) Débora C. Corrêa, Alexandre L. M. Levada, José Hiroki Saito
2008	Misc	`conf`	Improving the neural meshes algorithm for 3D surface reconstruction with edge swap operations. SAC João F. Mari, José Hiroki Saito, Gustavo Poli, Marcelo R. Zorzan, Alexandre L. M. Levada
2008	Misc	`conf`	Neural network based systems for computer-aided musical composition: supervised x unsupervised learning. SAC Débora C. Corrêa, Alexandre L. M. Levada, José Hiroki Saito, João F. Mari
2008	B	`conf`	On the asymptotic variances of Gaussian Markov Random Field model hyperparameters in stochastic image modeling. ICPR Alexandre L. M. Levada, Nelson D. A. Mascarenhas, Alberto Tannús
2008	J	`jnl`	Pseudolikelihood Equations for Potts MRF Model Parameter Estimation on Higher Order Neighborhood Systems. IEEE Geosci. Remote. Sens. Lett. Alexandre L. M. Levada, Nelson D. A. Mascarenhas, Alberto Tannús
2008	Misc	`conf`	Spatially non-homogeneous potts model parameter estimation on higher-order neighborhood systems by maximum pseudo-likelihood. SAC Alexandre L. M. Levada, Nelson D. A. Mascarenhas, Alberto Tannús, Denis H. P. Salvadeo
2008	—	`conf`	Stabilizing and Improving the Learning Speed of 2-Layered LSTM Network. CSE Débora C. Corrêa, Alexandre L. M. Levada, José Hiroki Saito
2007	C	`conf`	Voice Command Recognition with Dynamic Time Warping (DTW) using Graphics Processing Units (GPU) with Compute Unified Device Architecture (CUDA). SBAC-PAD Gustavo Poli, João F. Mari, José Hiroki Saito, Alexandre L. M. Levada