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Browsing by Author "Atienza Martínez, María Nieves"
Now showing items 1-20 of 21
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Article
A new condition for identifiability of finite mixture distributions
Atienza Martínez, María Nieves; García Heras, Joaquín; Muñoz Pichardo, Juan Manuel (Springer, 2006)In this paper a sufficient condition for the identifiability of finite mixtures is given. This condition is less restrictive ...
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Article
A new entropy based summary function for topological data analysis
Atienza Martínez, María Nieves; González Díaz, Rocío; Soriano Trigueros, Manuel (Elsevier, 2018)Topological data analysis (TDA) aims to obtain useful information from data sets using topological concepts. In particular, ...
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Article
A new topological entropy-based approach for measuring similarities among piecewise linear functions
Rucco, Matteo; González Díaz, Rocío; Jiménez Rodríguez, María José; Atienza Martínez, María Nieves; Cristalli, Cristina; Concettoni, Enrico; Ferrante, Andrea; Merelli, Emanuela (Elsevier, 2017)In this paper we present a novel methodology based on a topological entropy, the so-called persistent entropy, for ...
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Article
An application of mixture distributions in modelization of length of hospital stay
Atienza Martínez, María Nieves; García Heras, Joaquín; Muñoz Pichardo, Juan Manuel; Villa Caro, Rafael (Wiley, 2008)Length of hospital stay (LOS) is an important indicator of the hospital activity and management of health care. The ...
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Final Degree Project
Análisis topológico de las matrices de ocurrencias en la red de Bitcoin
Villalonga Álvaro, Joan (2023)Tras el nacimiento de Bitcoin, se ha producido una profunda transformación en los mercados digitales y la bolsa, dando ...
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Final Degree Project
Análisis y estudio del grafo de transacciones de Bitcoin
Claros Barrero, Fernando (2022)Durante los últimos años, el mundo del Bitcoin y las criptomonedas ha revolucionado por completo el concepto de pago y ...
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Article
Balanced Islands in Two Colored Point Sets in the Plane
Aichholzer, Oswin; Atienza Martínez, María Nieves; Díaz Báñez, José Miguel; Fabila Monroy, Ruy; Flores Peñaloza, David; Pérez Lantero, Pablo; Vogtenhuber, Birgit; Urrutia, Jorge (Elsevier, 2018) -
Presentation
Characterising epithelial tissues using persistent entropy
Atienza Martínez, María Nieves; Escudero Cuadrado, Luis María; Jiménez Rodríguez, María José; Soriano Trigueros, Manuel (Springer, 2019)In this paper, we apply persistent entropy, a novel topological statis- tic, for characterization of images of epithelial ...
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Final Degree Project
La conjetura de Sheehan en teoría de grafos
Fortes Lorenzo, Sabrina (2023)La conjetura de Sheehan en teoría de grafos afirma la inexistencia de grafos hamiltonianos 4-regulares con un único ciclo ...
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Article
Consistency of Maximum Likelihood Estimators in Finite Mixture Models of the Union of the Union of W-Type Families
Atienza Martínez, María Nieves; García Heras, Joaquín; Muñoz Pichardo, Juan Manuel (Taylor and Francis, 2005)In finite mixture models, maximum likelihood estimators have good properties, such as efficiency, consistency, and asymptotic ...
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Article
Cover Contact Graphs
Atienza Martínez, María Nieves; Castro Ochoa, Natalia de; Cortés Parejo, María del Carmen; Garrido Vizuete, María de los Angeles; Grima Ruiz, Clara Isabel; Hernández, Gregorio; Márquez Pérez, Alberto; Moreno, Auxiliadora; Nöllenburg, Martin; Portillo Fernández, José Ramón; Reyes Colume, Pedro; Valenzuela Muñoz, Jesús; Villar Liñán, María Trinidad; Wolff, Alexander (2007)We study problems that arise in the context of covering certain geometric objects (so-called seeds, e.g., points or disks) ...
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Article
Cover contact graphs
Atienza Martínez, María Nieves; Castro Ochoa, Natalia de; Cortés Parejo, María del Carmen; Garrido Vizuete, María de los Angeles; Grima Ruiz, Clara Isabel; Hernández, Gregorio; Márquez Pérez, Alberto; Moreno González, Auxiliadora; Nöllenburg, Martin; Portillo Fernández, José Ramón; Reyes Colume, Pedro; Valenzuela Muñoz, Jesús; Villar Liñán, María Trinidad; Wolff, Alexander (2012)We study problems that arise in the context of covering certain geometric objects called seeds (e.g., points or disks) ...
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Presentation
K-Factores en nubes bicromáticas
Grima Ruiz, Clara Isabel; Atienza Martínez, María Nieves; Cortés Parejo, María del Carmen; Garijo Royo, Delia; Valenzuela Muñoz, Jesús; Villar Liñán, María Trinidad (2007)Consideramos una colección de puntos bicromática y nos preguntamos cuántos puntos adicionales son necesarios considerar ...
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Article
Liaison-psychiatry: Reasons for consultation, diagnosis, and differences between medical and surgical patients
Ruiz Doblado, S.; Atienza Martínez, María Nieves; Lacalle Remigio, Juan Ramón (Cambridge University Press, 1999) -
PhD Thesis
Mixturas de distribuciones: Modelización de experiencias con asimetría en los datos
Atienza Martínez, María Nieves (2003-04-24)Una de las estrategias de la Estadística para describir y explicar una realidad compleja es la representación de la misma ...
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Article
On the consistency of MLE in finite mixture models of exponential families
Atienza Martínez, María Nieves; García Heras, Joaquín; Muñoz Pichardo, Juan Manuel; Villa Caro, Rafael (Elsevier, 2007)Finite mixtures of densities from an exponential family are frequently used in the statistical analysis of data. Modelling ...
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Article
On the stability of persistent entropy and new summary functions for Topological Data Analysis
Atienza Martínez, María Nieves; González Díaz, Rocío; Soriano Trigueros, Manuel (Cornell University, 2018)Persistent entropy of persistence barcodes, which is based on the Shannon entropy, has been recently defined and successfully ...
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Article
Persistent entropy for separating topological features from noise in vietoris-rips complexes
Atienza Martínez, María Nieves; González Díaz, Rocío; Rucco, Matteo (Springer, 2019)Persistent homology studies the evolution of k-dimensional holes along a nested sequence of simplicial complexes (called ...
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Article
Persistent entropy: a scale-invariant topological statistic for analyzing cell arrangements
Atienza Martínez, María Nieves; Escudero Cuadrado, Luis María; Jiménez Rodríguez, María José; Soriano Trigueros, Manuel (Cornell University, 2019)In this work, we develop a method for detecting differences in the topological distribution of cells forming epithelial ...
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Presentation
Separating Topological Noise from Features Using Persistent Entropy
Atienza Martínez, María Nieves; González Díaz, Rocío; Rucco, Matteo (Springer, 2016)Topology is the branch of mathematics that studies shapes and maps among them. From the algebraic definition of topology ...