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Your search keyword '"Veloz, Alejandro"' showing total 43 results
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43 results on '"Veloz, Alejandro"'

2. Efficient Methodology Based on Convolutional Neural Networks with Augmented Penalization on Hard-to-Classify Boundary Voxels on the Task of Brain Lesion Segmentation

Author

Ulloa, Gustavo, Veloz, Alejandro, Allende-Cid, Héctor, Monge, Raúl, Allende, Héctor, 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, Vergara-Villegas, Osslan Osiris, editor, Cruz-Sánchez, Vianey Guadalupe, editor, Sossa-Azuela, Juan Humberto, editor, Carrasco-Ochoa, Jesús Ariel, editor, Martínez-Trinidad, José Francisco, editor, and Olvera-López, José Arturo, editor

Published
2022
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4. Improving Multiple Sclerosis Lesion Boundaries Segmentation by Convolutional Neural Networks with Focal Learning

Author

Ulloa, Gustavo, Veloz, Alejandro, Allende-Cid, Héctor, Allende, Héctor, 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, Campilho, Aurélio, editor, Karray, Fakhri, editor, and Wang, Zhou, editor

Published
2020
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5. An Out of Sample Version of the EM Algorithm for Imputing Missing Values in Classification

Author

Campos, Sergio, Veloz, Alejandro, Allende, Hector, 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, Vera-Rodriguez, Ruben, editor, Fierrez, Julian, editor, and Morales, Aythami, editor

Published
2019
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6. Correction to: Study protocol and rationale of the “Cogniaction project” a cross-sectional and randomized controlled trial about physical activity, brain health, cognition, and educational achievement in schoolchildren

Author

Solis-Urra, Patricio, Olivares-Arancibia, Jorge, Suarez-Cadenas, Ernesto, Sanchez-Martinez, Javier, Rodríguez-Rodríguez, Fernando, Ortega, Francisco B., Esteban-Cornejo, Irene, Cadenas-Sanchez, Cristina, Castro-Piñero, Jose, Veloz, Alejandro, Chabert, Steren, Sadarangani, Kabir P., Zavala-Crichton, Juan Pablo, Migueles, Jairo H., Mora-Gonzalez, Jose, Quiroz-Escobar, Milton, Almonte-Espinoza, Diego, Urzúa, Alfonso, Dragicevic, Constantino D., Astudillo, Aland, Méndez-Gassibe, Eduardo, Riquelme-Uribe, Daniel, Azagra, Marcela Jarpa, and Cristi-Montero, Carlos

Published
2021
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9. Study protocol and rationale of the “Cogni-action project” a cross-sectional and randomized controlled trial about physical activity, brain health, cognition, and educational achievement in schoolchildren

Author

Solis-Urra, Patricio, Olivares-Arancibia, Jorge, Suarez-Cadenas, Ernesto, Sanchez-Martinez, Javier, Rodríguez-Rodríguez, Fernando, Ortega, Francisco B., Esteban-Cornejo, Irene, Cadenas-Sanchez, Cristina, Castro-Piñero, Jose, Veloz, Alejandro, Chabert, Steren, Sadarangani, Kabir P., Zavala-Crichton, Juan Pablo, Migueles, Jairo H., Mora-Gonzalez, Jose, Quiroz-Escobar, Milton, Almonte-Espinoza, Diego, Urzúa, Alfonso, Dragicevic, Constantino D., Astudillo, Aland, Méndez-Gassibe, Eduardo, Riquelme-Uribe, Daniel, Azagra, Marcela Jarpa, and Cristi-Montero, Carlos

Published
2019
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12. A named entity recognition framework using transformers to identify relevant clinical findings from mammographic radiological reports

Author

Godoy, Eduardo, primary, Chabert, Steren, additional, Querales, Marvin, additional, Sotelo, Julio, additional, Parra, Denis, additional, Fernández, Carlos, additional, Mellado, Diego, additional, Veloz, Alejandro, additional, Lever, Scarlett, additional, Pardo, Favian, additional, Bertini, Ayleen, additional, Molina, Yomar, additional, Díaz, Claudia, additional, Ferreira, Rodrigo, additional, and Salas, Rodrigo, additional

Published
2023
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15. Modified Expectation Maximization Algorithm for MRI Segmentation

Author

Donoso, Ramiro, Veloz, Alejandro, Allende, Héctor, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Bloch, Isabelle, editor, and Cesar, Roberto M., Jr., editor

Published
2010
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16. A Flexible Neuro-Fuzzy Autoregressive Technique for Non-linear Time Series Forecasting

Author

Veloz, Alejandro, Allende-Cid, Héctor, Allende, Héctor, Moraga, Claudio, Salas, Rodrigo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Velásquez, Juan D., editor, Ríos, Sebastián A., editor, Howlett, Robert J., editor, and Jain, Lakhmi C., editor

Published
2009
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17. Self-Organizing Neuro-Fuzzy Inference System

Author

Allende-Cid, Héctor, Veloz, Alejandro, Salas, Rodrigo, Chabert, Steren, Allende, Héctor, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Ruiz-Shulcloper, José, editor, and Kropatsch, Walter G., editor

Published
2008
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18. Fuzzy Spatial Growing for Glioblastoma Multiforme Segmentation on Brain Magnetic Resonance Imaging

Author

Veloz, Alejandro, Chabert, Steren, Salas, Rodrigo, Orellana, Antonio, Vielma, Juan, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Rueda, Luis, editor, and Mery, Domingo, editor

Published
2007
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23. A named entity recognition framework using transformers to identify relevant clinical findings from mammographic radiological reports

Author

Brieva, Jorge, Guevara, Pamela, Lepore, Natasha, Linguraru, Marius G., Rittner, Letícia, Romero Castro, Eduardo, Godoy, Eduardo, Chabert, Steren, Querales, Marvin, Sotelo, Julio, Parra, Denis, Fernandez, Carlos, Mellado, Diego, Veloz, Alejandro, Lever, Scarlett, Pardo, Fabian, Bertini, Ayleen, Molina, Yomar, Díaz, Claudia, Ferreira, Rodrigo, and Salas, Rodrigo

Published
2023
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25. Additional file 1 of Study protocol and rationale of the 'Cogni-action project' a cross-sectional and randomized controlled trial about physical activity, brain health, cognition, and educational achievement in schoolchildren

Author

Solis-Urra, Patricio, Olivares-Arancibia, Jorge, Suarez-Cadenas, Ernesto, Sanchez-Martinez, Javier, Rodríguez-Rodríguez, Fernando, Ortega, Francisco B., Esteban-Cornejo, Irene, Cadenas-Sanchez, Cristina, Castro-Piñero, Jose, Veloz, Alejandro, Steren Chabert, Sadarangani, Kabir P., Zavala-Crichton, Juan Pablo, Migueles, Jairo H., Mora-Gonzalez, Jose, Quiroz-Escobar, Milton, Almonte-Espinoza, Diego, Urzúa, Alfonso, Dragicevic, Constantino D., Aland Astudillo, Méndez-Gassibe, Eduardo, Riquelme-Uribe, Daniel, Azagra, Marcela Jarpa, and Cristi-Montero, Carlos

Abstract

SPIRIT Checklist. (DOC 123 kb)

Published
2021
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41. SIFAR: Self-Identification of Lags of an Autoregressive TSK-based Model.

Author

Veloz, Alejandro, Salas, Rodrigo, Allende-Cid, Héctor, and Allende, Héctor

Abstract

In this work, a Takagi-Sugeno-Kang (TSK) model is used for time series analysis and some important questions about the identification of this kind of models are addressed: the identification of the model structure and the set of the most influential regressors or lags. The main idea behind of the proposed method resembles to those techniques that prioritize lags evaluating the proximity of nearby samples in the input space in relation to the closeness of the corresponding target values. Clusters of samples are generated and the consistence of the mapping between the predicted variable and the set of candidate past values is evaluated. Afterwards, a TSK model is established and the redundancies in the rule base are avoided. Simulation experiments were conducted for 2 synthetic nonlinear autoregressive processes and for 4 benchmark time series. Results show a promising performance in terms of forecasting error and in terms of ability to find a proper set of lags of a given autoregressive process. [ABSTRACT FROM PUBLISHER]

Published
2012
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42. Fuzzy Spatial Growing for Glioblastoma Multiforme Segmentation on Brain Magnetic Resonance Imaging.

Author

Hutchison, David, Kanade, Takeo, Kleinberg, Jon M., Mattern, Friedemann, Mitchell, John C., Naor, Moni, Nierstrasz, Oscar, Pandu Rangan, C., Steffen, Bernhard, Sudan, Madhu, Terzopoulos, Demetri, Tygar, Doug, Vardi, Moshe Y., Weikum, Gerhard, Rueda, Luis, Mery, Domingo, Kittler, Josef, Veloz, Alejandro, Chabert, Steren, and Salas, Rodrigo

Abstract

Image segmentation is a fundamental technique in medical applications. For example, the extraction of biometrical parameter of tumors is of paramount importance both for clinical practice and for clinical studies that evaluate new brain tumor therapies. Tumor segmentation from brain Magnetic Resonance Images (MRI) is a difficult task due to strong signal heterogeneities and weak contrast at the boundary delimitation. In this work we propose a new framework to segment the Glioblastoma Multiforme (GBM) from brain MRI. The proposed algorithm was constructed based on two well known techniques: Region Growing and Fuzzy C-Means. Furthermore, it considers the intricate nature of the GBM in MRI and incorporates a fuzzy formulation of Region Growing with an automatic initialization of the seed points. We report the performance results of our segmentation framework on brain MRI obtained from patients of the chilean Carlos Van Buren Hospital and we compare the results with Region Growing and the classic Fuzzy C-Means approaches. [ABSTRACT FROM AUTHOR]

Published
2008
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