Hello, I started using the backtester some time ago, now I see that you added some option for preserving the state, and another version optimized for machine learning. Honestly I am a little bit confused, which version should I use? Is there a preferred choice?

]]>http://quantiacs.com/community/topic/66/backtester-versionsRSS for NodeTue, 15 Sep 2026 08:39:00 GMTFri, 14 May 2021 11:03:07 GMT60@jeppe_and Hi, there are 4 options for backtesting:

• processing all data in one pass. Very fast but you risk to overfit (by taking a global average for example);
• processing all data in many passes using the built-in backtester;
• same, but preserving the state at each iteration; for example, you can use the weights of yesterday to fix the weights today. In this case submission will take longer as parallelization is not possible;
• if yo use machine learning methods and you need to retrain your model periodically, you can use the ml extension for the call to the backtester.

]]>http://quantiacs.com/community/post/295http://quantiacs.com/community/post/295Thu, 20 May 2021 16:55:15 GMT