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The quickest way I know would be be to use "BATMAN" to run a batch exploration:
1. find beta and alpha. run first exploration and use Addsummaryrows() to find min and max for each factor. save table (1 pass)
2. load table ,normalize and save (could do this a few different ways)
--- In amibroker@xxxxxxxxxxxxxxx, "ta" <tagroups@xxx> wrote:
>
> I am calculating certain characteristics for every stock than I have in my
> EOD database (approximately 3000). For the sake of clarity let's use alpha
> and Beta as characteristics. I want to :
>
> 1. calculate the min and max value of alpha & beta in my data base.
>
> 2. Then normalize the values to values between 0 and 1
>
> 3. Then calculate the sum of normalized alpha and beta and store them
> in atc file to be used in backtests
>
>
>
> I was thinking of using the following procedure:
>
> 1. Calculate alpha and beta and store the values for each stock in an
> atc file (first pass thu database)
>
> 2. Run thru the atc files and find the min and max values for alpha
> and beta and store is in one new atc file (2nd pass thru database)
>
> 3. Normalize alpha & beta for each stock using the stock's atc file
> and minmax atc file that I created during the previous step (3rd pass thru
> database)
>
>
>
>
>
> Is there a better/faster approach? Any help or suggestions is much
> appreciated. TIA
>
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