pm: DI question

[pm]

Actually, this example might be more useful. I tried to reproduce some BJRM results (optimal calcs) and I had the same problem with the DI:

 

SETUP 



 

4.5/6 S17 DAS LS 

I18 Fab4 

100 hands/hr 

5 players

 

Wong in +1, wong out 0, enter shoe multiple times 

1-12 (ramp: 1/2/3/5/6/7/9/10/12) 

$41 unit 

$10,000 bank 

Round TCs & decks, 1/2 deck resolution

 



 

RESULTS

 

BJRM:	Win/100:	$60.24	(1.47 units) 

	SD/100:		$776	(18.93 units) 

	ROR:		13.49% 

	DI:		7.77 



 

CVData:	Win/hr:		$60.33	(1.47 units) 

	SD/100:		$852	(20.78 units) 

	ROR:		18.78% 

	DI:		4.01 

/


The SD & RoR were a little higher and the DI was much lower. I ran a similar sim except it was play-all, and the DI's matched up pretty closely in that one. Seems like I tend to get strange DI values with wonging sims. Any idea?

pm

http://www.freeloadmp3.com/

[pm]

By the way, my previous post has a strange link at the bottom; I think I had some malware on my machine that snuck that in there somehow.

[Don Schlesinger]

I went to both softwares (BJRM and CVCX) and was able to get results that were very similar (including the DIs) with both.

So, I'm afraid I can't help, because I can't reproduce your error.

Don

[pm]

I was actually comparing CVData results to BJRM results. Also, I think I might see what's going on; it looks like a possible bug in CVData. If you could take a quick glance..

In CVData, when "skipped hands" are included, these are the results:
Win/100 = 1.4714
SD/100 = 20.7767

When "skipped hands" are NOT included, these are the results:
Win/100 = 4.5955
SD/100 = 36.718

If you calculate (1.4714/36.718 * 100), you get an incorrect DI of 4.01, which is the exact value that I'm seeing in the summary screen. It looks like CVData is using the win/100 that includes "skipped hands" and the SD/100 that does NOT include skipped hands to calculate the DI. This would also explain why the DI is calculated correctly in a play-all sim, since there is only one set of values in those sims.

1.4714/20.7767 * 100 = 7.08; I'm assuming that would be the correct DI.

??

pm

[Don Schlesinger]

Everything that you've written is correct. I hope Norm will see this. You have to be careful with the DI for back-counting.

Don