V 1.0

[AlfredCYL]

Version 2024-08-20

Code Optimization

• Removed Unnecessary Code:

  • Eliminated unused components such as classifier and regressor.
  • Removed the show_program function.

• Enhanced Function Handling:

  • Implemented checks to avoid scenarios where func(x, y, z) accepts the same variable multiple times.

New Features

• Factor Depth Statistics:
  • Added functionality to perform in-depth statistical analysis of factors.

Mutation Probability Mechanism Improvements

• Revised Mutation Probability Mechanism:
  • Refined the understanding and definition of various mutation probabilities.
  • Previous Version: The point_replace controlled the likelihood of a point mutation for each point. The probability of no change was implicitly defined as 1 - (sum of four mutation probabilities).
  • Upgrade: Explicitly defined the probability of no change, allowing the total probability to potentially exceed 1, emphasizing the relative importance of each probability.
  • This upgrade facilitates dynamic adjustment of the mutation probabilities.

BaseIC and Factor Correlation Adjustment

• BaseIC Optimization:
  • Integrated satisfied_factors into a DataFrame for the final day and computed the correlation of each candidate factor with the factor set.
  • If the maximum correlation exceeds 0.8, the parsimony-adjusted fitness is scaled by (1 - corr + 0.6) before participating in the next generation's competition.

Dynamic Mutation Probability Adjustment

• Adaptive Mutation Probability:
  • Dynamically adjusted the probabilities of the four mutation types based on the structure of _program.program.
  • Point Mutation Probability: Increased if the same terminal appears excessively.
  • Hoist Mutation Probability: Increased if the depth is too large.
  • Point and Hoist Mutation Probability: Increased if the program length is too long.