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handle: 10902/23118
RESUMEN: Definimos una función de profundidad estadística bi-dimensional y estudiamos dos aspectos importantes de la misma: la robustez y la computabilidad. Comenzamos probando formalmente que la función es, de hecho, una función de profundidad estadística. Para conseguirlo, introducimos una nueva noción de simetría para distribuciones en Rp . Estudiamos la robustez a través del concepto de breakdown point. En cuanto a la computabilidad, proporcionamos un algoritmo implementable para calcular los contornos de profundidad con complejidad temporal Θ(n²) y complejidad espacial Θ(n), siendo n el tamaño del conjunto de datos. Como aplicación de la función de profundidad propuesta, proporcionamos un contraste de hipótesis para la independencia de dos variables absolutamente continuas.
ABSTRACT: We define a two-dimensional statistical depth function and study two important aspects of it: its robustness and computability. We begin by formally proving that the function is, indeed, a statistical depth function. To achieve this, we introduce a new notion of symmetry for distributions in Rp . We study the robustness through the concept of breakdown point. In terms of computability, we provide an implementable algorithm to calculate the depth contours with temporal complexity Θ(n²) and spatial complexity Θ(n), where n is the size of the data set. As an application of the proposed depth function, we provide a hypothesis test for the independence of two absolutely continuous variables
Grado en Matemáticas
Profundidad de la banda, Breakdown point, Median, Robustez, Statistical depth, Reflexiones, Computational geometry, Algorithm, Reflections, Mediana, Band depth, Algoritmo, Hyphotesis test, Geometría computacional, Profundidad estadística, Test de hipótesis, Robustness
Profundidad de la banda, Breakdown point, Median, Robustez, Statistical depth, Reflexiones, Computational geometry, Algorithm, Reflections, Mediana, Band depth, Algoritmo, Hyphotesis test, Geometría computacional, Profundidad estadística, Test de hipótesis, Robustness
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