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Random Race Test

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01-26-2008, 04:54 AM

post #1 (permalink)

Titan

Confused

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Random Race Test

So I've been running the Starcraft random algorithm for choosing a race (when a user selects "Random" in the game lobby). After about 1 1/2 hours I have some interesting results.

Code:

Race            Times Picked        Probability
--------        ------------        -----------
Zerg:           10,941,256          0.333217035
Terran:         10,941,658          0.333229278
Protoss:        10,952,310          0.333553686
--------        ------------        -----------
Total:          32,835,224

It looks like Protoss is in the lead right now. I'm going to run the test all night and see what happens. No, there is no grand purpose to this. I was just looking for something interesting to do. It will probably just continue to converge to 1/3 each, but we'll see.

After 331,975,848 tests, Protoss lost a lot of ground, but the probabilities are still converging to 1/3.

Code:

Race            Times Picked        Probability
--------        ------------        -----------
Zerg:           110,668,607         0.333363429
Terran:         110,669,002         0.333364619
Protoss:        110,638,239         0.333271952
--------        ------------        -----------
Total:          331,975,848

Last edited by Titan : 01-26-2008 at 04:53 PM.

$Titan 15 0FF11|\|3$

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01-26-2008, 10:53 AM

post #2 (permalink)

hure Deviant Join Date: Jul 2007 Posts: 159	its more interessting if you have more randoms. if you play racewar with 6 players, it will never have more than 3 players of the same type. did you also analyze streak lengths?
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01-26-2008, 04:55 PM

post #3 (permalink)

Titan

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Quote:

Originally Posted by hure

its more interessting if you have more randoms.

if you play racewar with 6 players, it will never have more than 3 players of the same type.

did you also analyze streak lengths?

This is just testing a scenario where one player goes random. I haven't done any deep analysis... I was just bored last night.

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01-26-2008, 05:38 PM

post #4 (permalink)

John

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John is an unknown quantity at this point

I would be bored to doing that. What's the point?

Quote:

Being gay is your own choice. Just don't bother me with your gay sh*t and I won't punch you in the face.

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01-26-2008, 05:47 PM

post #5 (permalink)

Otaku I'm in ur user profile changing ur name back Senior Member Gold Member Messiah Join Date: Mar 2005 Location: Austin, TX Posts: 9,165	Curiosity?
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01-26-2008, 05:53 PM

post #6 (permalink)

John

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Hell yes!

Quote:

Being gay is your own choice. Just don't bother me with your gay sh*t and I won't punch you in the face.

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01-26-2008, 06:02 PM

post #7 (permalink)

Polie13

The Future

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That's pretty neat, any chance of running it against multiple race selections?

Quote:

Originally Posted by DSG on AIM

dsg (12:34:34 AM): i gave my ups driver
dsg (12:34:37 AM): a popsicle
dsg (12:34:39 AM): when it was hot out
dsg (12:34:43 AM): and i had pissed in it
dsg (12:34:47 AM): the popsicle fluid
dsg (12:34:50 AM): that i used to make
dsg (12:34:51 AM): em
dsg (12:34:53 AM): i planned it out
dsg (12:34:54 AM): LOL
dsg (12:34:59 AM): ordered a package
dsg (12:35:01 AM): stayed home all day
dsg (12:35:09 AM): and gave him a popsicle i had prepared
polie13 (12:35:15 AM): ..thats pretty ****ed up

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01-26-2008, 06:13 PM

post #8 (permalink)

Titan Confused Senior Member Retired Staff Member Blessed Join Date: May 2004 Posts: 2,162	Here is something interesting if you weren't amazed by those results. It seems that... If you play a game with 8 people, 7 of them choose Protoss as their race, and you go random... you will still have a 1/3 chance of getting Protoss. Multiple randoms is a different story though.
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01-26-2008, 06:17 PM

post #9 (permalink)

John

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Join Date: Mar 2006

Location: USA

Posts: 535

Dude that owns!

Quote:

Being gay is your own choice. Just don't bother me with your gay sh*t and I won't punch you in the face.

$John 15 0FF11|\|3$

01-26-2008, 06:34 PM

post #10 (permalink)

BD-ICY Blessed Join Date: Dec 2005 Location: Detroit, Michigan USA Posts: 1,977	I've played a game where all 8 of us went random, and 4 of us were terran, 3 were toss and only 1 zerg(he got pwned by the toss lol) BD-ICY Seems that way. > Successfully injected Heroin.dll < Found my old account. ston3rpimp69: my mother told me id have my own personal ball-washer some day. im glad all that hard work paid off.
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01-26-2008, 10:15 PM

post #11 (permalink)

MiCrOz

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Location: Cherry Hill, NJ

Posts: 3,156

Quote:

Originally Posted by John

I would be bored to doing that. What's the point?

He's not doing it physically.

The results are interesting, but expected.

Quote:

Originally Posted by DarthSlyGuy

Your opinion DOES NOT count for anything on these forums. This isn't a democracy on these forums its a 'dt'ocracy/dictatorship and us staff are his officers.

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01-26-2008, 10:29 PM

post #12 (permalink)

Administrator

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Join Date: Jul 2004

Location: Germany

Posts: 4,768

This gets interesting in case of multiple random players. It's not entirely random any more, the following rules apply:

2 players: the probability of a mirror matchup (same race twice) is only 1/8, as opposed to 1/3 as you would expect from a random distribution. All other matchups are equally likely.

More players: All matchups are equally likely, however only the following ratios are possible:
3: 1-1-1 or 2-1-0
4: 2-1-1
5: 2-2-1
6: 2-2-2 or 3-2-1
7: 3-2-2
8: 3-3-2

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