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SI231: The Perfect Fit for Trend Following ft. Richard Brennan

Top Traders Unplugged

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How to Separate Good Luck From Real Signal

An over fit trading system is where we extract both signal and noise from that price series as it responds to those price patterns that simply lead to profitable outcomes. An under fit model is one in which the trading system fails to optimally extract the signal from a price series, leaving a lot of the signal unexploited. So this is still a problem that exists. It's very hard to when we come to the terms over fit, under fit etc. How do we separate good luck from real signal? This is a real issue here. We want to lean towards especially arranged to outliers which are anomalies, they're exotic, they're unique in nature.

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