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CompleMatch: Mejora de la Clasificación Semi-Supervisada de Series Temporales con Complementariedad
IEEE transactions on pattern analysis and machine intelligence
|December 15, 2025
Resumen
CompleMatch mejora la clasificación semi-supervisada (SSC) de series temporales combinando datos temporales y de frecuencia. Este novedoso enfoque mejora la precisión del modelo con datos etiquetados limitados, superando a los métodos existentes.
Área de la Ciencia:
- Aprendizaje Automático
- Ciencia de Datos
- Procesamiento de Señales
Sus antecedentes:
- La Clasificación Semi-Supervisada (SSC) aprovecha los datos no etiquetados para mejorar el rendimiento del modelo cuando las muestras etiquetadas son escasas.
- Los métodos existentes de SSC de series temporales se basan principalmente en dependencias temporales, que pueden ser sensibles al ruido y pueden pasar por alto la periodicidad de las características globales.
Objetivo del estudio:
- Introducir CompleMatch, un novedoso marco de SSC de series temporales que utiliza información complementaria de los dominios temporal y de frecuencia.
- Mejorar el aprendizaje a partir de datos no etiquetados integrando diversas representaciones de datos.
Principales métodos:
- CompleMatch emplea un paradigma de co-entrenamiento con dos redes neuronales profundas entrenadas simultáneamente, una para vistas del dominio temporal y otra para el dominio de frecuencia.
- Las pseudo-etiquetas generadas mediante la propagación de etiquetas guían el entrenamiento de cada red, explotando la naturaleza complementaria de las representaciones temporal-frecuencial.
- Un módulo de aprendizaje contrastivo temporal-frecuencial integra señales supervisadas y auto-supervisadas para mejorar la calidad de las pseudo-etiquetas y la discriminabilidad de la representación.
Principales resultados:
- CompleMatch supera significativamente los métodos de vanguardia en tareas de SSC de series temporales.
- Los estudios de ablación y las visualizaciones confirman la efectividad de la estrategia propuesta de aprendizaje complementario temporal-frecuencial.
- El marco demuestra una robustez y un rendimiento mejorados, particularmente en condiciones de datos etiquetados limitados.
Conclusiones:
- El marco propuesto CompleMatch aprovecha eficazmente la información temporal y de frecuencia complementaria para una SSC robusta de series temporales.
- La integración de diversas representaciones de datos y el aprendizaje contrastivo mejoran el rendimiento del modelo y el poder discriminatorio.
- CompleMatch ofrece un avance prometedor para el aprendizaje semi-supervisado en el análisis de series temporales.
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