Works matching AU Leiva, Victor

Results: 199

Improving the Modeling of Binary Response Regression Based on New Proposals for Statistical Diagnostics With Applications to Medical Data.

Published in:

Statistics in Medicine, 2025, v. 44, n. 13/14, p. 1, doi. 10.1002/sim.70073

By:

Galea, Manuel;
Catalán, Mónica;
Tapia, Alejandra;
Giampaoli, Viviana;
Leiva, Víctor

Publication type:

Article

Confidence Intervals for the Reliability of Dependent Systems: Integrating Frailty Models and Copula-Based Methods.

Published in:

Computer Modeling in Engineering & Sciences (CMES), 2025, v. 143, n. 2, p. 1401, doi. 10.32604/cmes.2025.064487

By:

Bru-Cordero, Osnamir E.;
Castro, Cecilia;
Leiva, Víctor;
Jaramillo-Elorza, Mario C.

Publication type:

Article

Abordando la psoriasis desde la Medicina Interna y Dermatología: Estrategias Actuales para un Tratamiento Integral.

Published in:

Tesla Revista Científica, 2023, v. 3, n. 2, p. 1, doi. 10.55204/trc.v3i2.e277

By:

Piedra Bravo, Samantha Vanessa;
Cushpa Quinapanta, Erik Manuel;
Clavijo Quizhpilema, María José;
León Ruiz, Liliana Katherine;
Cruz Andrade, Ana Verónica;
Mendoza Ocampo, Gregorio Alexander;
Gómez Leiva, Victor Andres

Publication type:

Article

STATIS multivariate three-way method for evaluating quality of life after corneal surgery: Methodology and case study in Costa Rica.

Published in:

Mathematical Biosciences & Engineering, 2023, v. 20, n. 4, p. 6110, doi. 10.3934/mbe.2023264

By:

Perdomo-Argüello, Francisco J.;
Ortega-Gómez, Estelina;
Galindo-Villard'on, Purificación;
Leiva, Víctor;
Vicente-Galindo, Purificación

Publication type:

Article

Modeling lot-size with time-dependent demand based on stochastic programming and case study of drug supply in Chile.

Published in:

PLoS ONE, 2019, v. 14, n. 3, p. 1, doi. 10.1371/journal.pone.0212768

By:

Rojas, Fernando;
Leiva, Víctor;
Wanke, Peter;
Lillo, Camilo;
Pascual, Jimena

Publication type:

Article

Robust beta regression modeling with errors-in-variables: a Bayesian approach and numerical applications.

Published in:

Statistical Papers, 2022, v. 63, n. 3, p. 919, doi. 10.1007/s00362-021-01260-1

By:

Figueroa-Zúñiga, Jorge I.;
Bayes, Cristian L.;
Leiva, Víctor;
Liu, Shuangzhe

Publication type:

Article

Birnbaum–Saunders autoregressive conditional duration models applied to high-frequency financial data.

Published in:

Statistical Papers, 2019, v. 60, n. 5, p. 1605, doi. 10.1007/s00362-017-0888-6

By:

Saulo, Helton;
Leão, Jeremias;
Leiva, Víctor;
Aykroyd, Robert G.

Publication type:

Article

An extended Birnbaum–Saunders model and its application in the study of environmental quality in Santiago, Chile.

Published in:

Stochastic Environmental Research & Risk Assessment, 2010, v. 24, n. 5, p. 771, doi. 10.1007/s00477-009-0363-6

By:

Vilca, Filidor;
Sanhueza, Antonio;
Leiva, Víctor;
Christakos, George

Publication type:

Article

A length-biased version of the Birnbaum-Saunders distribution with application in water quality.

Published in:

Stochastic Environmental Research & Risk Assessment, 2009, v. 23, n. 4, p. 299, doi. 10.1007/s00477-008-0215-9

By:

Leiva, Víctor;
Sanhueza, Antonio;
Angulo, José M.

Publication type:

Article

Optimization of Contribution Margins in Food Services by Modeling Independent Component Demand.

Published in:

Colombian Journal of Statistics / Revista Colombiana de Estadística, 2015, v. 38, n. 1, p. 1, doi. 10.15446/rce.v38n1.48799

By:

ROJAS, FERNANDO;
LEIVA, VÍCTOR;
WANKE, PETER;
MARCHANT, CAROLINA

Publication type:

Article

A Methodology for Biplots Based on Bootstrapping with R.

Published in:

Colombian Journal of Statistics / Revista Colombiana de Estadística, 2014, v. 37, n. 2, p. 367, doi. 10.15446/rce.v37n2spe.47944

By:

NIETO, ANA B.;
GALINDO, M. PURIFICACIÓN;
VICENTE-GALINDO, PURIFICACIÓN;
LEIVA, VÍCTOR

Publication type:

Article

Graphical Tools to Assess Goodness-of-Fit in Non-Location-Scale Distributions.

Published in:

Colombian Journal of Statistics / Revista Colombiana de Estadística, 2014, v. 37, n. 2, p. 341, doi. 10.15446/rce.v37n2spe.47941

By:

CASTRO-KURISS, CLAUDIA;
LEIVA, VÍCTOR;
ATHAYDE, EMILIA

Publication type:

Article

Two New Mixture Models Related to the Inverse Gaussian Distribution.

Published in:

Methodology & Computing in Applied Probability, 2010, v. 12, n. 1, p. 199, doi. 10.1007/s11009-008-9112-4

By:

Kotz, Samuel;
Leiva, Víctor;
Sanhueza, Antonio

Publication type:

Article

A Statistical Methodology for Evaluating Asymmetry after Normalization with Application to Genomic Data.

Published in:

Stats, 2024, v. 7, n. 3, p. 967, doi. 10.3390/stats7030059

By:

Leiva, Víctor;
Corzo, Jimmy;
Vergara, Myrian E.;
Ospina, Raydonal;
Castro, Cecilia

Publication type:

Article

Statistical Inference on a Stochastic Epidemic Model.

Published in:

Communications in Statistics: Simulation & Computation, 2015, v. 44, n. 9, p. 2297, doi. 10.1080/03610918.2013.835409

By:

Fierro, Raúl;
Leiva, Víctor;
Balakrishnan, N.

Publication type:

Article

A New Goodness-of-Fit Test for Censored Data with an Application in Monitoring Processes.

Published in:

Communications in Statistics: Simulation & Computation, 2009, v. 38, n. 6, p. 1161, doi. 10.1080/03610910902833488

By:

Castro-Kuriss, Claudia;
Kelmansky, DianaM.;
Leiva, Víctor;
Martínez, ElenaJ.

Publication type:

Article

Acceptance Sampling Plans from Truncated Life Tests Based on the Generalized Birnbaum-Saunders Distribution.

Published in:

Communications in Statistics: Simulation & Computation, 2007, v. 36, n. 3, p. 643, doi. 10.1080/03610910701207819

By:

Balakrishnan, N.;
Leiva, Víctor;
López, Jorge

Publication type:

Article

Successful aminolevulinic acid photodynamic therapy for recalcitrant severe hidradenitis suppurativa.

Published in:

2010

By:

Guglielmetti, Antonio;
Bedoya, Juliana;
Acuna, Maribel;
Leiva, Victor;
Gonzalez, Sergio

Publication type:

Letter

A Hybrid Fuzzy Mathematical Programming Approach for Manufacturing Inventory Models with Partial Trade Credit Policy and Reliability.

Published in:

Axioms (2075-1680), 2024, v. 13, n. 11, p. 743, doi. 10.3390/axioms13110743

By:

Dhandapani, Prasantha Bharathi;
Kalaichelvan, Kalaiarasi;
Leiva, Víctor;
Castro, Cecilia;
Ramalingam, Soundaria

Publication type:

Article

Archery Algorithm: A Novel Stochastic Optimization Algorithm for Solving Optimization Problems.

Published in:

Computers, Materials & Continua, 2022, v. 72, n. 1, p. 399, doi. 10.32604/cmc.2022.024736

By:

Ahmadi Zeidabadi, Fatemeh;
Dehghani, Mohammad;
Trojovský, Pavel;
Hubálovský, Štěpán;
Leiva, Victor;
Dhiman, Gaurav

Publication type:

Article

A new variance stabilizing transformation for gene expression data analysis.

Published in:

Statistical Applications in Genetics & Molecular Biology, 2013, v. 12, n. 6, p. 653, doi. 10.1515/sagmb-2012-0030

By:

Kelmansky, Diana M.;
Martínez, Elena J.;
Leiva, Víctor

Publication type:

Article

Systems of quaternionic linear matrix equations: solution, computation, algorithm, and applications.

Published in:

AIMS Mathematics, 2024, v. 9, n. 10, p. 1, doi. 10.3934/math.20241284

By:

Rehman, Abdur;
Rahman, Muhammad Zia Ur;
Ghaffar, Asim;
Martin-Barreiro, Carlos;
Castro, Cecilia;
Leiva, Víctor;
Cabezas, Xavier

Publication type:

Article

Solvability and algorithm for Sylvester-type quaternion matrix equations with potential applications.

Published in:

AIMS Mathematics, 2024, v. 9, n. 8, p. 19967, doi. 10.3934/math.2024974

By:

Rehman, Abdur;
Kyrchei, Ivan;
Ur Rahman, Muhammad Zia;
Leiva, Víctor;
Castro, Cecilia

Publication type:

Article

Statistical characterization of vaccinated cases and deaths due to COVID-19: methodology and case study in South America.

Published in:

AIMS Mathematics, 2023, v. 8, n. 10, p. 22693, doi. 10.3934/math.20231155

By:

Martin-Barreiro, Carlos;
Cabezas, Xavier;
Leiva, Víctor;
Santis, Pedro Ramos-De;
Ramirez-Figueroa, John A.;
Delgado, Erwin J.

Publication type:

Article

Influence Diagnostics for Elliptical Multivariate Linear Regression Models.

Published in:

Communications in Statistics: Theory & Methods, 2003, v. 32, n. 3, p. 625, doi. 10.1081/STA-120018555

By:

Díaz-García, José A.;
Galea Rojas, Manuel;
Leiva-Sánchez, Víctor

Publication type:

Article

Doubly Non-central t and Distributions Obtained Under Singular and Non-singular Elliptic Distributions.

Published in:

Communications in Statistics: Theory & Methods, 2003, v. 32, n. 1, p. 11, doi. 10.1081/STA-120017797

By:

Díaz-García, José A.;
Leiva-Sánchez, Víctor

Publication type:

Article

SINGULAR ELLIPTICAL DISTRIBUTION: DENSITY AND APPLICATIONS.

Published in:

Communications in Statistics: Theory & Methods, 2002, v. 31, n. 5, p. 665, doi. 10.1081/STA-120003646

By:

Díaz-García, José A.;
Leiva-Sánchez, Víctor;
Galea, Manuel

Publication type:

Article

New Statistical Residuals for Regression Models in the Exponential Family: Characterization, Simulation, Computation, and Applications.

Published in:

Mathematics (2227-7390), 2024, v. 12, n. 20, p. 3196, doi. 10.3390/math12203196

By:

Ospina, Raydonal;
Espinheira, Patrícia L.;
Arias, Leilo A.;
Xavier, Cleber M.;
Leiva, Víctor;
Castro, Cecilia

Publication type:

Article

Skew-Normal Inflated Models: Mathematical Characterization and Applications to Medical Data with Excess of Zeros and Ones.

Published in:

Mathematics (2227-7390), 2024, v. 12, n. 16, p. 2486, doi. 10.3390/math12162486

By:

Martínez-Flórez, Guillermo;
Tovar-Falón, Roger;
Leiva, Víctor;
Castro, Cecilia

Publication type:

Article

Modeling Residential Energy Consumption Patterns with Machine Learning Methods Based on a Case Study in Brazil.

Published in:

Mathematics (2227-7390), 2024, v. 12, n. 13, p. 1961, doi. 10.3390/math12131961

By:

Henriques, Lucas;
Castro, Cecilia;
Prata, Felipe;
Leiva, Víctor;
Venegas, René

Publication type:

Article

Optimizing the Economic Order Quantity Using Fuzzy Theory and Machine Learning Applied to a Pharmaceutical Framework.

Published in:

Mathematics (2227-7390), 2024, v. 12, n. 6, p. 819, doi. 10.3390/math12060819

By:

Kalaichelvan, Kalaiarasi;
Ramalingam, Soundaria;
Dhandapani, Prasantha Bharathi;
Leiva, Víctor;
Castro, Cecilia

Publication type:

Article

An Overview of Kriging and Cokriging Predictors for Functional Random Fields.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 15, p. 3425, doi. 10.3390/math11153425

By:

Giraldo, Ramón;
Leiva, Víctor;
Castro, Cecilia

Publication type:

Article

Biased Random-Key Genetic Algorithm with Local Search Applied to the Maximum Diversity Problem.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 14, p. 3072, doi. 10.3390/math11143072

By:

Silva, Geiza;
Leite, André;
Ospina, Raydonal;
Leiva, Víctor;
Figueroa-Zúñiga, Jorge;
Castro, Cecilia

Publication type:

Article

An Overview of Forecast Analysis with ARIMA Models during the COVID-19 Pandemic: Methodology and Case Study in Brazil.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 14, p. 3069, doi. 10.3390/math11143069

By:

Ospina, Raydonal;
Gondim, João A. M.;
Leiva, Víctor;
Castro, Cecilia

Publication type:

Article

Inference Based on the Stochastic Expectation Maximization Algorithm in a Kumaraswamy Model with an Application to COVID-19 Cases in Chile.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 13, p. 2894, doi. 10.3390/math11132894

By:

Figueroa-Zúñiga, Jorge;
Toledo, Juan G.;
Lagos-Alvarez, Bernardo;
Leiva, Víctor;
Navarrete, Jean P.

Publication type:

Article

Elliptical Capital Asset Pricing Models: Formulation, Diagnostics, Case Study with Chilean Data, and Economic Rationale.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 6, p. 1394, doi. 10.3390/math11061394

By:

Leal, Danilo;
Jiménez, Rodrigo;
Riquelme, Marco;
Leiva, Víctor

Publication type:

Article

Modeling Income Data via New Parametric Quantile Regressions: Formulation, Computational Statistics, and Application.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 2, p. 448, doi. 10.3390/math11020448

By:

Saulo, Helton;
Vila, Roberto;
Borges, Giovanna V.;
Bourguignon, Marcelo;
Leiva, Víctor;
Marchant, Carolina

Publication type:

Article

On the Use of Variability Measures to Analyze Source Coding Data Based on the Shannon Entropy.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 2, p. 293, doi. 10.3390/math11020293

By:

de Oliveira, Helio M.;
Ospina, Raydonal;
Martin-Barreiro, Carlos;
Leiva, Víctor;
Chesneau, Christophe

Publication type:

Article

Improvement of Furuta's Inequality with Applications to Numerical Radius.

Published in:

Mathematics (2227-7390), 2023, v. 11, n. 1, p. 36, doi. 10.3390/math11010036

By:

Alomari, Mohammad W.;
Bakherad, Mojtaba;
Hajmohamadi, Monire;
Chesneau, Christophe;
Leiva, Víctor;
Martin-Barreiro, Carlos

Publication type:

Article

A Fuzzy Design for a Sliding Mode Observer-Based Control Scheme of Takagi-Sugeno Markov Jump Systems under Imperfect Premise Matching with Bio-Economic and Industrial Applications.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 18, p. 3309, doi. 10.3390/math10183309

By:

Alshammari, Obaid;
Kchaou, Mourad;
Jerbi, Houssem;
Ben Aoun, Sondess;
Leiva, Víctor

Publication type:

Article

Modeling Inventory Cost Savings and Supply Chain Success Factors: A Hybrid Robust Compromise Multi-Criteria Approach.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 16, p. 2911, doi. 10.3390/math10162911

By:

Rojas, Fernando;
Wanke, Peter;
Leiva, Víctor;
Huerta, Mauricio;
Martin-Barreiro, Carlos

Publication type:

Article

Improvement of Some Hayashi–Ostrowski Type Inequalities with Applications in a Probability Setting.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 13, p. 2316, doi. 10.3390/math10132316

By:

Alomari, Mohammad W.;
Chesneau, Christophe;
Leiva, Víctor;
Martin-Barreiro, Carlos

Publication type:

Article

A Stochastic Optimization Algorithm to Enhance Controllers of Photovoltaic Systems.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 12, p. 2128, doi. 10.3390/math10122128

By:

Charfeddine, Samia;
Alharbi, Hadeel;
Jerbi, Houssem;
Kchaou, Mourad;
Abbassi, Rabeh;
Leiva, Víctor

Publication type:

Article

An Equity-Based Optimization Model to Solve the Location Problem for Healthcare Centers Applied to Hospital Beds and COVID-19 Vaccination.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 11, p. 1825, doi. 10.3390/math10111825

By:

Delgado, Erwin J.;
Cabezas, Xavier;
Martin-Barreiro, Carlos;
Leiva, Víctor;
Rojas, Fernando

Publication type:

Article

Grüss-Type Inequalities for Vector-Valued Functions.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 9, p. 1535, doi. 10.3390/math10091535

By:

Alomari, Mohammad W.;
Chesneau, Christophe;
Leiva, Víctor

Publication type:

Article

Vasicek Quantile and Mean Regression Models for Bounded Data: New Formulation, Mathematical Derivations, and Numerical Applications.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 9, p. 1389, doi. 10.3390/math10091389

By:

Mazucheli, Josmar;
Alves, Bruna;
Korkmaz, Mustafa Ç.;
Leiva, Víctor

Publication type:

Article

Multiscale Monitoring Using Machine Learning Methods: New Methodology and an Industrial Application to a Photovoltaic System.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 6, p. 890, doi. 10.3390/math10060890

By:

Chaouch, Hanen;
Charfeddine, Samia;
Ben Aoun, Sondess;
Jerbi, Houssem;
Leiva, Víctor

Publication type:

Article

Abnormality Detection and Failure Prediction Using Explainable Bayesian Deep Learning: Methodology and Case Study with Industrial Data.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 4, p. N.PAG, doi. 10.3390/math10040554

By:

Nor, Ahmad Kamal Mohd;
Pedapati, Srinivasa Rao;
Muhammad, Masdi;
Leiva, Víctor

Publication type:

Article

A Study on Computational Algorithms in the Estimation of Parameters for a Class of Beta Regression Models.

Published in:

Mathematics (2227-7390), 2022, v. 10, n. 3, p. 299, doi. 10.3390/math10030299

By:

Couri, Lucas;
Ospina, Raydonal;
Silva, Geiza da;
Leiva, Víctor;
Figueroa-Zúñiga, Jorge

Publication type:

Article

A New Quantile Regression Model and Its Diagnostic Analytics for a Weibull Distributed Response with Applications.

Published in:

Mathematics (2227-7390), 2021, v. 9, n. 21, p. 2768, doi. 10.3390/math9212768

By:

Sánchez, Luis;
Leiva, Víctor;
Saulo, Helton;
Marchant, Carolina;
Sarabia, José M.

Publication type:

Article