Binning categorical variavle

[Ksharp]

Open dataset "group" or "fmt_purpose".

[Ronein]

Hello,

In your code what is the meaning of symbol #?

woe[i]=(Bad_Dist-Good_Dist)#log(Bad_Dist/Good_Dist);

[Ronein]

I think that in your code 

instead of 

woe[i]=(Bad_Dist-Good_Dist)#log(Bad_Dist/Good_Dist);

it should be 
woe[i]=log(Bad_Dist/Good_Dist);

[Ksharp]

Nope.
That is really not a WOE. I wrote that is just for calculating IV .
You could see the following code:
if countmiss(woe)=0 then iv=sum(woe) ;

Here IV is a really IV value. Since I only care about IV is the biggest or not .

[Ksharp]

it stands for multiply. Like:
a b a#b
1 2 2
2 3 6
4 5 20