I have been a VectorVest subscriber for 8 years and have waited patiently for VectorVest to fix this problem
The surviorship bias is extremely important to getting accurate backtest results. My backtests yield significantly different results each time I run them because of this issue.
In fact, I doubt that the confirmed up and confirmed down calls could be accurately reproduced with the current database.
This database is at the core of every product that the company produces and it would be in their best interst to fix it.
I learned the lesson on the first day of the first computer science class I took over 40 years ago: GIGO (Garbage In; Garbage Out)
VectorVest-It's time to fix this once and for all.
Howard Feldman
supported this idea
·
I have been a VectorVest subscriber for 8 years and have waited patiently for VectorVest to fix this problem
The surviorship bias is extremely important to getting accurate backtest results. My backtests yield significantly different results each time I run them because of this issue.
In fact, I doubt that the confirmed up and confirmed down calls could be accurately reproduced with the current database.
This database is at the core of every product that the company produces and it would be in their best interst to fix it.
I learned the lesson on the first day of the first computer science class I took over 40 years ago: GIGO (Garbage In; Garbage Out)
VectorVest-It's time to fix this once and for all.