Why we employ walk-forward testing to avoid curve-fitting
How we backtest our trading strategies, how we avoid overfitting by using walk-forward testing and why we adapt our strategies from time to time. One of the main questions we get is this: Why do we change the set of parameters from time to time? Is this not just curve-fitting to improve the system performance? Some think, that once you developed a strategy, you should never change it. They argue this is the only way to … Read more