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Aprendizaje federado semisupervisado con muestreo aleatorio uniforme y basado en redes de clientes
Entropy (Basel, Switzerland)
|August 28, 2025
Resumen
El aprendizaje federado semisupervisado (Fed-SSL) se beneficia de estrategias de muestreo estructuradas. El muestreo basado en enrejado en FedAvg-SSL mejora la estabilidad y el rendimiento del entrenamiento en no i.i.d. datos comparados con los métodos aleatorios.
Área de la Ciencia:
- Inteligencia artificial
- Aprendizaje automático
- Sistemas distribuidos
Sus antecedentes:
- El aprendizaje semi-supervisado federado (Fed-SSL) utiliza datos distribuidos etiquetados y sin etiqueta.
- La participación parcial del cliente es común en Fed-SSL para reducir los gastos generales de comunicación.
- No identificado Las distribuciones de datos plantean desafíos para las estrategias de muestreo de clientes en Fed-SSL.
Objetivo del estudio:
- Proponer un nuevo algoritmo de aprendizaje semisupervisado de promedio federado, FedAvg-SSL.
- Investigar el impacto de las diferentes estrategias de muestreo de clientes en el rendimiento de Fed-SSL.
- Analizar las propiedades de convergencia del algoritmo propuesto.
Principales métodos:
- Se introdujo FedAvg-SSL, que incorpora el muestreo aleatorio uniforme (Monte Carlo) y el muestreo basado en celosía (quasi-Monte Carlo).
- Los clientes alternan entre la actualización del modelo global y el refinamiento de un modelo de pseudoetiqueta utilizando datos locales.
- Proporcionó análisis teóricos de convergencia y realizó extensos experimentos.
Principales resultados:
- FedAvg-SSL logra una tasa de convergencia sublineal con aceleración lineal.
- El muestreo basado en la red demuestra ventajas sobre el muestreo aleatorio uniforme en el aprendizaje federado.
- Los resultados experimentales validan los hallazgos teóricos y resaltan el impacto de las estrategias de muestreo.
Conclusiones:
- FedAvg-SSL ofrece un enfoque eficaz para el aprendizaje federado semisupervisado.
- El muestreo basado en enrejado mejora la estabilidad del entrenamiento y el rendimiento del modelo, especialmente bajo no-i.i.d. las condiciones.
- El estudio proporciona información sobre la optimización de la participación y el muestreo de clientes para Fed-SSL.
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