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Imputación de valores faltantes en datos relacionales utilizando inferencia variacional

Simon Fontaine1, Jian Kang2, Ji Zhu3

  • 1Department of Statistics, Pennsylvania State University.

Journal of computational and graphical statistics : a joint publication of American Statistical Association, Institute of Mathematical Statistics, Interface Foundation of North America
|August 29, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio introduce un nuevo modelo de espacio latente conjunto para mejorar la imputación de atributos de nodos en redes. Al integrar la conectividad de red y los atributos de los nodos, el método mejora la precisión de la imputación, especialmente con datos observados limitados.

Palabras clave:
modelo de espacio latenteImputación del valor faltanteAnálisis de la redLas covariantes del nodotransmisión de mensajes variables

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Área de la Ciencia:

  • Ciencia de las redes
  • Ciencia de los datos
  • Aprendizaje automático

Sus antecedentes:

  • Los atributos de los nodos en las redes del mundo real a menudo son incompletos y requieren imputación para el análisis.
  • Los métodos de imputación existentes a menudo descuidan información valiosa de la conectividad de la red.

Objetivo del estudio:

  • Desarrollar un método mejorado de imputación de atributos aprovechando tanto los atributos del nodo como la estructura de la red.
  • Introducir un modelo de espacio latente conjunto que capte las interdependencias entre los atributos del nodo y la conectividad.

Principales métodos:

  • Se propone un modelo de espacio latente conjunto para aprender una representación de datos de baja dimensión.
  • La inferencia variacional se emplea para aproximar las distribuciones posteriores de las variables latentes.
  • El modelo agrupa información a través de variables latentes compartidas para la predicción de atributos.

Principales resultados:

  • El método propuesto utiliza efectivamente la información de estructura conjunta para la imputación de atributos.
  • Se observaron mejoras significativas en la precisión de la imputación, especialmente cuando los datos observados son escasos.
  • Los experimentos numéricos en redes simuladas y del mundo real validaron el enfoque.

Conclusiones:

  • El modelo de espacio latente conjunto ofrece un enfoque más eficaz para la imputación de atributos en redes.
  • La integración de la conectividad de red mejora la predicción de los atributos de los nodos faltantes.
  • El método es prometedor para aplicaciones que requieren una imputación robusta de datos de red.