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A Comprehensive Survey of Federated Transfer Learning: Challenges, Methods, and Applications

Core Concepts
The author explores the challenges and solutions in federated transfer learning by integrating transfer learning into federated learning. They address issues such as data heterogeneity, system heterogeneity, incremental data, labeled data scarcity, and model heterogeneity.
The content delves into the complexities of federated transfer learning, highlighting challenges like prior shift, covariate shift, feature concept shift, label concept shift, quantity shift, feature space heterogeneity, label space heterogeneity, system heterogeneity, incremental data, model adaptive FTL, semi-supervised FTL, and unsupervised FTL. Strategies for addressing these challenges are discussed through both data-based and model-based approaches.
"In practice...eliminating the requirement of local data sharing." "To solve this problem...has attracted the attention of numerous researchers." "However...challenges that are not present in TL." "Existing surveys in the FL field mainly focus on traditional FL..." "Despite some studies focus on not identically and independently distributed (Non-IID) or other heterogeneous scenarios..." "To fill this gap...and future prospects."
"In recent years...certain tasks." "Driven by high-quality training certain tasks." "Federated learning (FL)...without sharing local private data Xi." "To address the aforementioned challenges...FTL as follows."

Key Insights Distilled From

by Wei Guo,Fuzh... at 03-05-2024
A Comprehensive Survey of Federated Transfer Learning

Deeper Inquiries

How can federated transfer learning be applied to real-world scenarios beyond machine learning

Federated transfer learning (FTL) can be applied to real-world scenarios beyond machine learning in various fields such as healthcare, finance, and cybersecurity. In healthcare, FTL can enable different hospitals or medical institutions to collaborate on training models without sharing sensitive patient data, improving diagnostic accuracy and treatment outcomes. In finance, FTL can help financial institutions analyze customer behavior across different regions while maintaining data privacy. This collaboration can lead to better risk assessment and fraud detection. Additionally, in cybersecurity, FTL can enhance threat detection by allowing multiple organizations to share insights on emerging cyber threats without compromising individual security protocols.

What counterarguments exist against the integration of transfer learning into federated learning

Counterarguments against the integration of transfer learning into federated learning may include concerns about model performance degradation due to the complexity introduced by transferring knowledge between participants with varying data distributions. The integration of transfer learning could also raise issues related to privacy and security since sharing model parameters or features among participants may increase the risk of exposing sensitive information. Furthermore, there might be challenges in ensuring the fairness and transparency of the collaborative model training process when incorporating transfer learning techniques.

How can advancements in federated transfer learning impact other fields outside of artificial intelligence

Advancements in federated transfer learning can have a significant impact on various fields outside of artificial intelligence. For example: Healthcare: Improved disease diagnosis through collaborative analysis of medical imaging data from different hospitals. Finance: Enhanced fraud detection capabilities by leveraging insights from diverse financial datasets while preserving data privacy. Supply Chain Management: Optimized inventory management and demand forecasting through shared analytics across multiple suppliers. Telecommunications: Better network optimization based on collective insights from diverse user behavior patterns. Environmental Monitoring: Collaborative analysis of sensor data for climate change research and natural disaster prediction. These advancements not only improve decision-making processes but also foster innovation and collaboration across industries that rely on decentralized data sources for insights and predictions.