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Abandono de Neuronas en el Flujo de Atención: Explicación Visual de la Dinámica Dentro de los Modelos CNN
IEEE transactions on pattern analysis and machine intelligence
|January 12, 2026
Resumen
Introducimos el Flujo de Abandono de Neuronas (NAFlow) para visualizar cómo las Redes Neuronales Convolucionales (CNN) evolucionan la atención durante la clasificación. Este método identifica y excluye con precisión las neuronas no utilizadas, ofreciendo nuevas perspectivas sobre la toma de decisiones de las CNN.
Área de la Ciencia:
- Visión por Computadora
- Inteligencia Artificial
- Aprendizaje Automático
Sus antecedentes:
- Explicar el proceso de toma de decisiones de las Redes Neuronales Convolucionales (CNN) sigue siendo un desafío importante.
- Visualizar la dinámica de atención dentro de las CNN es crucial para comprender su comportamiento de clasificación.
Objetivo del estudio:
- Introducir un método novedoso, el Flujo de Abandono de Neuronas (NAFlow), para explicar visualmente la evolución de la atención en las CNN.
- Abordar el problema no resuelto de comprender las contribuciones de las neuronas de capas intermedias a las decisiones de clasificación de las CNN.
Principales métodos:
- Desarrollado un algoritmo de retropropagación en cascada para abandonar neuronas y excluir neuronas no utilizadas en capas intermedias de CNN.
- Propuesto un módulo de retropropagación para abandonar neuronas para generar Mapas de Características de Retropropagación (BPFM) invirtiendo capas de CNN.
- Introducido un módulo de pesos de contribución de canal utilizando la Matriz Jacobiana para modelos de CNN basados en métricas de similitud.
Principales resultados:
- NAFlow visualiza eficazmente la dinámica del flujo de atención dentro de las CNN.
- El método excluye con precisión las neuronas que no contribuyen a las decisiones de clasificación.
- Eficacia demostrada en once modelos de CNN para tareas diversas, incluyendo clasificación general de imágenes, aprendizaje contrastivo, aprendizaje few-shot y recuperación de imágenes.
Conclusiones:
- NAFlow proporciona una herramienta poderosa para interpretar los mecanismos de atención de las CNN.
- El método propuesto mejora la explicabilidad de los modelos de aprendizaje profundo en visión por computadora.
- Este trabajo ofrece avances significativos en la comprensión y depuración de las CNN.
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