Core Concepts
Balancing stability and plasticity is crucial for effective continual self-supervised learning.
Abstract
The content discusses the challenges of continual self-supervised learning (SSL) in balancing stability and plasticity when adapting to new information. It introduces the concept of Branch-tuning, a method that achieves this balance efficiently. The paper analyzes the stability and plasticity of models in continual SSL, highlighting the roles of Batch Normalization (BN) layers and convolutional layers. Branch-tuning consists of Branch Expansion and Branch Compression, offering a straightforward approach to continual SSL without the need for retaining old models or data. Experimental results on various benchmark datasets demonstrate the effectiveness of Branch-tuning in real-world scenarios.
Introduction to Self-Supervised Learning (SSL)
Challenges of continual SSL in balancing stability and plasticity
Introduction of Branch-tuning method
Analysis of stability and plasticity in models
Branch-tuning process and its effectiveness in experiments
Stats
The joint-trained model achieves optimal stability and plasticity.
Stability (S) and plasticity (P) metrics are defined at each stage in the continual SSL process.
Layer-wise stability and plasticity curves are visualized for different methods.
Fixing BN layers significantly improves model stability.
Conv layers play a more prominent role in model plasticity.
Quotes
"Fine-tuning a model often leads to insufficient stability and forgetting, while enforcing stability limits the model’s adaptability to new data."
"Our method eliminates the need to preserve old models and data, reducing storage overhead as the number of incremental tasks grows."