Backtesting Frameworks skill: what it does and how to install it

What it does. Structures trading backtests around training, validation and test sets, with walk-forward analysis for repeated train-and-test windows. It covers point-in-time data, delisted securities, realistic transaction costs, Monte Carlo analysis and market capacity.

When to use it. For developing or validating trading algorithms, comparing strategies, or building backtesting infrastructure while limiting overfitting and other sources of biased performance estimates.