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https://scholar.google.com/citations?user=O3hhdFQAAAAJ&hl=es

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Scopus Author ID: 57194649304

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Employment (2)

De Montfort University: Leicester, Leicestershire, GB

Employment
Source: Self-asserted source
Saul Calderon Ramirez

Tecnológico de Costa Rica: Cartago, Cartago, CR

2016-01-01 to present | Professor/Researcher (Computer Engineering School)
Employment
Source: Self-asserted source
Saul Calderon Ramirez

Education and qualifications (1)

De Montfort University: Leicester, GB

2022-03-01 | Ph. D. Computer Science
Education
Source: Self-asserted source
Saul Calderon Ramirez

Works (38)

Out-of-Distribution Detection with Memory-Augmented Variational Autoencoder

Mathematics
2024-10-09 | Journal article
DOI: 10.3390/math12193153
Contributors: Faezeh Ataeiasad; David Elizondo; Saúl Calderón Ramírez; Sarah Greenfield; Lipika Deka
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Estimación de incertidumbre para un sistema de reconocimiento de voz

Revista Tecnología en Marcha
2024-09-09 | Journal article
DOI: 10.18845/tm.v37i7.7305
Contributors: Walter Morales-Muñoz; Saúl Calderón-Ramírez
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Crossref

Exploration and selection of LLM models for financial text simplification

Revista Tecnología en Marcha
2024-09-09 | Journal article
DOI: 10.18845/tm.v37i7.7297
Contributors: Bertha C Brenes-Brenes; Saul Calderón-Ramírez
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An uncertainty estimator method based on the application of feature density to classify mammograms for breast cancer detection

Neural Computing and Applications
2023 | Journal article
DOI: 10.1007/s00521-023-08904-3
EID:

2-s2.0-85168566306

Part of ISSN: 14333058 09410643
Contributors: Fuentes-Fino, R.; Calderón-Ramírez, S.; Domínguez, E.; López-Rubio, E.; Elizondo, D.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Uncertainty Estimation for Complex Text Detection in Spanish

5th IEEE International Conference on BioInspired Processing, BIP 2023
2023 | Conference paper
DOI: 10.1109/BIP60195.2023.10379278
EID:

2-s2.0-85184351690

ISBN: 9798350330052
Contributors: Abreu-Cardenas, M.; Calderon-Ramirez, S.; Solis, M.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Dataset Similarity to Assess Semisupervised Learning Under Distribution Mismatch Between the Labeled and Unlabeled Datasets

IEEE Transactions on Artificial Intelligence
2023-04 | Journal article
DOI: 10.1109/TAI.2022.3168804
Contributors: Saul Calderon-Ramirez; Luis Oala; Jordina Torrents-Barrena; Shengxiang Yang; David Elizondo; Armaghan Moemeni; Simon Colreavy-Donnelly; Wojciech Samek; Miguel A. Molina-Cabello; Ezequiel López-Rubio
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Feature Density as an Uncertainty Estimator Method in the Binary Classification Mammography Images Task for a Supervised Deep Learning Model

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2022 | Conference paper
DOI: 10.1007/978-3-031-07802-6_32
EID:

2-s2.0-85133175017

ISBN: 9783031078019
Part of ISSN: 16113349 03029743
Contributors: Fuentes-Fino, R.J.; Calderón-Ramírez, S.; Domínguez, E.; López-Rubio, E.; Hernandez-Vasquez, M.A.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Improving Semi-supervised Deep Learning by using Automatic Thresholding to Deal with Out of Distribution Data for COVID-19 Detection using Chest X-ray Images

arXiv
2022 | Other
DOI: 10.48550/arXiv.2211.02142
EID:

2-s2.0-85142154035

Part of ISSN: 23318422
Contributors: Benavides-Mata, I.; Calderon-Ramirez, S.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Semi-supervised Deep Learning for Image Classification with Distribution Mismatch: A Survey

arXiv
2022 | Other
DOI: 10.48550/arxiv.2203.00190
EID:

2-s2.0-85170470023

Part of ISSN: 23318422
Contributors: Calderon-Ramirez, S.; Yang, S.; Elizondo, D.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Towards Text Simplification in Spanish: A Brief Overview of Deep Learning Approaches for Text Simplification

2022 IEEE 4th International Conference on BioInspired Processing, BIP 2022
2022 | Conference paper
DOI: 10.1109/BIP56202.2022.10032482
EID:

2-s2.0-85148476856

ISBN: 9781665470483
Contributors: Romero, M.; Calderon-Ramirez, S.; Solis, M.; Perez-Rojas, N.; Chacon-Rivas, M.; Saggion, H.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Semisupervised Deep Learning for Image Classification With Distribution Mismatch: A Survey

IEEE Transactions on Artificial Intelligence
2022-12 | Journal article
DOI: 10.1109/TAI.2022.3196326
Contributors: Saul Calderon-Ramirez; Shengxiang Yang; David Elizondo
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Dealing with distribution mismatch in semi-supervised deep learning for COVID-19 detection using chest X-ray images: A novel approach using feature densities

Applied Soft Computing
2022-07 | Journal article
DOI: 10.1016/j.asoc.2022.108983
Contributors: Saul Calderon-Ramirez; Shengxiang Yang; David Elizondo; Armaghan Moemeni
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A real use case of semi-supervised learning for mammogram classification in a local clinic of Costa Rica

Medical & Biological Engineering & Computing
2022-04 | Journal article
DOI: 10.1007/s11517-021-02497-6
Contributors: Saul Calderon-Ramirez; Diego Murillo-Hernandez; Kevin Rojas-Salazar; David Elizondo; Shengxiang Yang; Armaghan Moemeni; Miguel Molina-Cabello
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A real use case of semi-supervised learning for mammogram classification in a local clinic of Costa Rica

arXiv
2021 | Other
DOI: 10.48550/arxiv.2107.11696
EID:

2-s2.0-85171065371

Part of ISSN: 23318422
Contributors: Calderón-Ramírez, S.; Murillo-Hernández, D.; Rojas-Salazar, K.; Elizondo, D.; Yang, S.; Moemeni, A.; Molina-Cabello, M.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Correcting data imbalance for semi-supervised COVID-19 detection using X-ray chest images

Applied Soft Computing
2021 | Journal article
DOI: 10.1016/j.asoc.2021.107692
EID:

2-s2.0-85111056484

Part of ISSN: 15684946
Contributors: Calderon-Ramirez, S.; Yang, S.; Moemeni, A.; Elizondo, D.; Colreavy-Donnelly, S.; Chavarría-Estrada, L.F.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Dealing with distribution mismatch in semi-supervised deep learning for Covid-19 detection using chest X-ray images: A novel approach using feature densities

arXiv
2021 | Other
DOI: 10.48550/arxiv.2109.00889
EID:

2-s2.0-85170895931

Part of ISSN: 23318422
Contributors: Calderon-Ramirez, S.; Yang, S.; Elizondo, D.; Moemeni, A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Enforcing morphological information in fully convolutional networks to improve cell instance segmentation in fluorescence microscopy images

arXiv
2021 | Other
DOI: 10.48550/arxiv.2106.05843
EID:

2-s2.0-85170613075

Part of ISSN: 23318422
Contributors: Zamora-Cárdenas, W.; Mendez, M.; Calderon-Ramirez, S.; Vargas, M.; Monge, G.; Quiros, S.; Elizondo, D.; Torrents-Barrena, J.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Enforcing Morphological Information in Fully Convolutional Networks to Improve Cell Instance Segmentation in Fluorescence Microscopy Images

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2021 | Conference paper
DOI: 10.1007/978-3-030-85030-2_4
EID:

2-s2.0-85115148155

ISBN: 9783030850296
Part of ISSN: 16113349 03029743
Contributors: Zamora-Cárdenas, W.; Mendez, M.; Calderon-Ramirez, S.; Vargas, M.; Monge, G.; Quiros, S.; Elizondo, D.; Torrents-Barrena, J.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Improving Uncertainty Estimation With Semi-Supervised Deep Learning for COVID-19 Detection Using Chest X-Ray Images

IEEE Access
2021 | Journal article
DOI: 10.1109/ACCESS.2021.3085418
Contributors: Saul Calderon-Ramirez; Shengxiang Yang; Armaghan Moemeni; Simon Colreavy-Donnelly; David A. Elizondo; Luis Oala; Jorge Rodriguez-Capitan; Manuel Jimenez-Navarro; Ezequiel Lopez-Rubio; Miguel A. Molina-Cabello
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Improving Uncertainty Estimations for Mammogram Classification using Semi-Supervised Learning

Proceedings of the International Joint Conference on Neural Networks
2021 | Conference paper
DOI: 10.1109/IJCNN52387.2021.9533719
EID:

2-s2.0-85115147237

ISBN: 9780738133669
Contributors: Calderon-Ramirez, S.; Murillo-Hernandez, D.; Rojas-Salazar, K.; Calvo-Valverd, L.-A.; Yang, S.; Moemeni, A.; Elizondo, D.; Lopez-Rubio, E.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Machine Learning for Health: Algorithm Auditing & Quality Control

Journal of Medical Systems
2021 | Journal article
DOI: 10.1007/s10916-021-01783-y
EID:

2-s2.0-85118701534

Part of ISSN: 1573689X 01485598
Contributors: Oala, L.; Murchison, A.G.; Balachandran, P.; Choudhary, S.; Fehr, J.; Leite, A.W.; Goldschmidt, P.G.; Johner, C.; Schörverth, E.D.M.; Nakasi, R. et al.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

More than meets the eye: Semi-supervised learning under non-IID data

arXiv
2021 | Other
DOI: 10.48550/arxiv.2104.10223
EID:

2-s2.0-85171212046

Part of ISSN: 23318422
Contributors: Calderon-Ramirez, S.; Oala, L.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

A First Glance into Reversing Senescence on Herbarium Sample Images Through Conditional Generative Adversarial Networks

Communications in Computer and Information Science
2020 | Conference paper
DOI: 10.1007/978-3-030-41005-6_30
EID:

2-s2.0-85081180330

ISBN: 9783030410049
Part of ISSN: 18650937 18650929
Contributors: Villacis-Llobet, J.; Lucio-Troya, M.; Calvo-Navarro, M.; Calderon-Ramirez, S.; Mata-Montero, E.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

A First Glance to the Quality Assessment of Dental Photostimulable Phosphor Plates with Deep Learning

Proceedings of the International Joint Conference on Neural Networks
2020 | Conference paper
DOI: 10.1109/IJCNN48605.2020.9206779
EID:

2-s2.0-85093819746

ISBN: 9781728169262
Contributors: Bermudez, A.; Calderon-Ramirez, S.; Thang, T.; Tyrrell, P.; Moemeni, A.; Yang, S.; Torrents-Barrena, J.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Convolutional neural networks for segmenting xylem vessels in stained cross-sectional images

Neural Computing and Applications
2020 | Journal article
DOI: 10.1007/s00521-019-04546-6
EID:

2-s2.0-85074783141

Part of ISSN: 14333058 09410643
Contributors: Garcia-Pedrero, A.; García-Cervigón, A.I.; Olano, J.M.; García-Hidalgo, M.; Lillo-Saavedra, M.; Gonzalo-Martín, C.; Caetano, C.; Calderón-Ramírez, S.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Correcting data imbalance for semi-supervised Covid-19 detection using X-ray chest images

arXiv
2020 | Other
DOI: 10.48550/arxiv.2008.08496
EID:

2-s2.0-85170303773

Part of ISSN: 23318422
Contributors: Calderon-Ramirez, S.; Yang, S.; Moemeni, A.; Elizondo, D.; Colreavy-Donnelly, S.; Chavarría-Estrada, L.F.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Dealing with scarce labelled data: Semi-supervised deep learning with mix match for Covid-19 detection using chest X-ray images

Proceedings - International Conference on Pattern Recognition
2020 | Conference paper
DOI: 10.1109/ICPR48806.2021.9412946
EID:

2-s2.0-85110552708

ISBN: 9781728188089
Part of ISSN: 10514651
Contributors: Calderon-Ramirez, S.; Giri, R.; Yang, S.; Moemeni, A.; Umaña, M.; Elizondo, D.; Torrents-Barrena, J.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

MixMOOD: A systematic approach to class distribution mismatch in semi-supervised learning using deep dataset dissimilarity measures

arXiv
2020 | Other
DOI: 10.48550/arxiv.2006.07767
EID:

2-s2.0-85171030982

Part of ISSN: 23318422
Contributors: Calderon-Ramirez, S.; Torrents-Barrena, J.; Moemeni, A.; Oala, L.; Yang, S.; Samek, W.; Molina-Cabello, M.A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

ML4H Auditing: From Paper to Practice

Proceedings of Machine Learning Research
2020 | Conference paper
EID:

2-s2.0-85159455396

Part of ISSN: 26403498
Contributors: Oala, L.; Fehr, J.; Gilli, L.; Balachandran, P.; Leite, A.W.; Calderon-Ramirez, S.; Li, D.X.; Nobis, G.; Alvarado, E.A.M.; Jaramillo-Gutierrez, G. et al.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Unsharp masking layer: Injecting prior knowledge in convolutional networks for image classification

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2019 | Conference paper
DOI: 10.1007/978-3-030-30508-6_1
EID:

2-s2.0-85072873365

ISBN: 9783030305079
Part of ISSN: 16113349 03029743
Contributors: Carranza-Rojas, J.; Calderon-Ramirez, S.; Mora-Fallas, A.; Granados-Menani, M.; Torrents-Barrena, J.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Assessing the Impact of the Deceived Non Local Means Filter as a Preprocessing Stage in a Convolutional Neural Network Based Approach for Age Estimation Using Digital Hand X-Ray Images

Proceedings - International Conference on Image Processing, ICIP
2018 | Conference paper
DOI: 10.1109/ICIP.2018.8451191
EID:

2-s2.0-85054553861

ISBN: 9781479970612
Part of ISSN: 15224880
Contributors: Calderon, S.; Fallas, F.; Zumbado, M.; Tyrrell, P.N.; Stark, H.; Emersic, Z.; Meden, B.; Solis, M.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Automatic Calibration of the Deceived Non Local Means Filter for Improving the Segmentation of Cells in Fluorescence Based Microscopy

2018 International Conference on Biomedical Engineering Applications, ICBEA 2018 - Proceedings
2018 | Conference paper
DOI: 10.1109/ICBEA.2018.8471735
EID:

2-s2.0-85055845766

ISBN: 9781538680582
Contributors: Calderón, S.; Barrantes, J.; Schuster, J.; Mendez, M.; Begera, J.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

DNLM-IIFFT: An implementation of the deceived non local means filter using integral images and the fast fourier transform for a reduced computational cost

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2018 | Conference paper
DOI: 10.1007/978-3-319-75193-1_16
EID:

2-s2.0-85042223955

ISBN: 9783319751924
Part of ISSN: 16113349 03029743
Contributors: Calderón Ramírez, S.; Zumbado Corrales, M.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

DNLM-MA-P: A Parallelization of the Deceived Non Local Means Filter with Moving Average and Symmetric Weighting

2018 IEEE International Work Conference on Bioinspired Intelligence, IWOBI 2018 - Proceedings
2018 | Conference paper
DOI: 10.1109/IWOBI.2018.8464180
EID:

2-s2.0-85054505888

ISBN: 9781538675069
Contributors: Calderon, S.; Castro, J.; Zurnbado, M.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

A first glance on the enhancement of digital cell activity videos from glioblastoma cells with nuclear staining

2016 IEEE 36th Central American and Panama Convention, CONCAPAN 2016
2016 | Conference paper
DOI: 10.1109/CONCAPAN.2016.7942344
EID:

2-s2.0-85021415326

ISBN: 9781467395786
Contributors: Calderon, S.; Moya, D.; Cruz, J.C.; Valverde, J.M.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Deceived bilateral filter for improving the automatic cell segmentation and tracking in the NF-kB pathway without nuclear staining

IFMBE Proceedings
2015 | Conference paper
DOI: 10.1007/978-3-319-13117-7_89
EID:

2-s2.0-84925233778

ISBN: 9783319131160
Part of ISSN: 16800737
Contributors: Sáenz, A.; Calderón, S.; Castro, J.; Mora, R.; Siles, F.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

DeWAFF: A novel image abstraction approach to improve the performance of a cell tracking system

IWOBI 2015 - 2015 International Work Conference on Bio-Inspired Intelligence: Intelligent Systems for Biodiversity Conservation, Proceedings
2015 | Conference paper
DOI: 10.1109/IWOBI.2015.7160148
EID:

2-s2.0-84943157190

ISBN: 9781479961740
Contributors: Calderon, S.; Saenz, A.; Mora, R.; Siles, F.; Orozco, I.; Buemi, M.E.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier

Aud-SWIPE-P: A parallelization of the Aud-SWIPE pitch estimation algorithm using multiple processes and threads

IASTED Multiconferences - Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Networks, PDCN 2013
2013 | Conference paper
DOI: 10.2316/P.2013.795-013
EID:

2-s2.0-84875543908

ISBN: 9780889869431
Contributors: Calderón, S.; Alvarado, G.; Camacho, A.
Source: Self-asserted source
Saul Calderon Ramirez via Scopus - Elsevier
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