Book for education

Hi guys, in this days i have a question in my mind. What books should I buy for myself culture of genetics evolution? 
I want use strategyquant with scientifc metod, i want calculate, those data are used to a certain type of strategy? And things like that, but calculated analytically, and not empirical.
Someone, or Mark himself, knows of good books to read on the subject?

Personally I don’t use the genetic evolution part of SQ much.  I find the random approach finds the best strategies, then improve parts again random. 

To me the genetic building just finds many clones that are all very similar and highly correlated.  I use it, but only for a short time to avoid clone making….

Just my 2 cents on the approach.

ok, but even if you use the random approach, how you calculate the data range? haphazard? empirical?

ok, but even if you use the random approach, how you calculate the data range? haphazard? empirical?

I’m not sure I understand what you mean by data range?  Period of in sample to out of sample data?

the total period of data, is+oos

Well, if you choose a very short period of data, for example 1 yr, you get better results, since the strategy is only “seeing” a limited range of market conditions and will adapted to these recent .  If you use a very long period of data, say 10 years, you cover most market conditions, but you get less relevant results (the market was quite different 10+ years ago) but a more robust strategy since it would show profitability over different conditions.

What is a scientific way to choose this?  I don’t know. It’s a compromise between creating strategies that are more intune with recent market conditions vs ones that are more flexible but are likely on average to be less profitable.