Population-based methods
Population-based training (PBT) is a powerful technique that combines parallel search with adaptive hyperparameter tuning during the training process. PBT is particularly effective for problems where training can be paused and resumed efficiently. This is because PBT periodically evaluates and updates hyperparameters and model weights across a population, requiring seamless pause-and-resume capabilities. This adaptability ensures optimal use of computational resources and makes PBT ideal for tasks such as neural architecture search, reinforcement learning, and hyperparameter tuning, where iterative optimization is computationally intensive.
Here, we’ll implement a simplified version of PBT to illustrate its core concepts and functionality.
We’ll start by creating a SimplePBT
class that encapsulates the core functionality of the PBT algorithm. Let’s break down the implementation:
- First, initialize the class:
import random import...