我都常都會回測10年，至少3-5年，看看數據與可能的策略優化，但如您所說的，不要過度優化；因為我們都無法預知市場，只能用正確的邏輯研發交易策略，很多人透過修改參數來修正，但當行情來時，我們怎麼可以預知呢？一起交流吧 @sharesteemit

I usually run backtest for 10 years, at least 3 to 5 years for the algorithmic trading, but as you said, do not over-optimize; No one can predict the market. You can only try to use the right logic for the trading strategy even if it has losses on the way. Instead of adjusting the parameters for best performance in the past. You never how the market will behave in the future. Follow me @sharesteemit