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Data analysis on 8 million games - Page 6

Forum Index > BW General
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earob84
Profile Joined October 2017
Germany175 Posts
October 17 2023 15:43 GMT
#101
Thanks Kraekkling for your work! I really appreciate it.
Darkwhite
Profile Joined June 2007
Norway348 Posts
Last Edited: 2023-10-17 17:16:05
October 17 2023 17:03 GMT
#102
On October 16 2023 07:07 TMNT wrote:
You know what, one thing that has been bugging me is the 60-70% win rate around 2-3 minutes in PvT at all mmr range. Because it makes little sense.

I can understand that win rate in all the Zerg matchups because of 4 pool. But for PvT, if you do proxy gate, the first zealot arrives at Terran's base around 2:30-2:40, so the Terrans just leave the game immediately without a fight? But if that is the case, the win rate must be close to 100% for Protoss. So I guess the 30-40% Terran wins at that minute mark is due to Protoss leaving the game immediately after BBS. So no one bothers to pull probes and SCVs to micro?


It only shows the win-rates for the given duration. Longer games probably mostly end in a normal way. When filtering for games that are shorter than what is reasonable, the data is likely dominated by abnormal stuff. It's hard to guess what fractions of the super short games are actual decisive results and what is basically ragequits, from losing a worker, from not wanting to play vs gas steal or proxy or from accidentally cancelling a supply depot.

Also, note that analysing the win-by-duration graphs does not actually show what you might expect it to show. Matchmaking sort-of guarantees that the win-rate over all possible game lengths will be close to 50%, so a strong early timing cannot change the overall balance of the matchup (because matchmaking controls for it), but must instead "move" or "borrow" win percentage from other game durations to the timing window.

An easy way of understanding this is imagining a player who learns a great PvT DT build an suddenly wins a lot more games around 8 minutes. If he still plays exactly the same as before in all his non-DT games, his win rate at other durations will still drop because his MMR adjusts and his opponents are better.
Darker than the sun's light; much stiller than the storm - slower than the lightning; just like the winter warm.
TentativePanda
Profile Joined August 2014
United States800 Posts
October 18 2023 18:05 GMT
#103
On October 17 2023 01:20 Kraekkling wrote:
Show nested quote +
On October 16 2023 07:07 TMNT wrote:
You know what, one thing that has been bugging me is the 60-70% win rate around 2-3 minutes in PvT at all mmr range. Because it makes little sense.

I can understand that win rate in all the Zerg matchups because of 4 pool. But for PvT, if you do proxy gate, the first zealot arrives at Terran's base around 2:30-2:40, so the Terrans just leave the game immediately without a fight? But if that is the case, the win rate must be close to 100% for Protoss. So I guess the 30-40% Terran wins at that minute mark is due to Protoss leaving the game immediately after BBS. So no one bothers to pull probes and SCVs to micro?


You could try and go to repmastered.app and examine this type of games, maybe you'll be able to find some pattern?

Other than that, we're looking at a small numer of games overall.

There also is some baseline probabilty of players just randomly quitting games or disconnecting, which results in a number of games within this period with a win rate of 50% for both races.

This effect could be quantified by looking at the win rate at the 0-1 minute period, where we expect basically no player interaction at all.

This information is not available to us, because games shorter than 2 minute were filtered out in the pre-selection of data. The only useful estimate which I can provide here is that the overall rate of disconnects is somewhere around 2% of all games.

The win rate in PvT around 2-3 minutes is 58% for all players combined. In the MMR-bracket plot all data points except the one with the biggest error bar are close to 60%.

Some speculative thoughts: + Show Spoiler +
Scenarios that might make a Terran quit around 2-3 minutes:

- scouting probe enters before depot finishes
- barracks delayed due to scouting probe
- scouting probe kills scv
- gas stolen
- manner pylon
- Terran scouts proxy gate(s)
- zealot enters

Scenarios that might make a Protoss quit around 2-3 minutes:

- something involving 12nex?
- ???


I'm not even joking when I say this, I think there is an effect from protoss players who leave when they don't scout the Terran first. I have definitely went back into replay to see why a protoss left and it was when they reach first empty base with scouting probe. They are sick people LOL
Physician *
Profile Blog Joined January 2004
United States4146 Posts
October 19 2023 02:59 GMT
#104
physician aka entropy very humbly bows down in silent respect and then discreetly withdraws again into fog..
"I have beheld the births of negative-suns and borne witness to the entropy of entire realities...."
ajmbek
Profile Joined November 2008
Italy460 Posts
October 19 2023 21:50 GMT
#105
As this work looks good and meticulous I would like to point at just one small detail. There is no such a thing as a 7:00 - 8:00 1 minute interval. It can be 7:00 - 7:59 or 7:01 8:00. I believe that does not change the data in any way, but can make you count twice all the games a good amount of games, precisely 1 every 30.
Sic iter ad astra
Dakota_Fanning *
Profile Joined January 2008
Hungary2349 Posts
October 20 2023 06:12 GMT
#106
On October 20 2023 06:50 ajmbek wrote:
As this work looks good and meticulous I would like to point at just one small detail. There is no such a thing as a 7:00 - 8:00 1 minute interval. It can be 7:00 - 7:59 or 7:01 8:00. I believe that does not change the data in any way, but can make you count twice all the games a good amount of games, precisely 1 every 30.

I'm sure the 7-8 minute phrase is just for easy comprehension. I'm sure the upper bound is exclusive and no game is counted twice in multiple periods. It's much easier to read and write "7-8 minute" than "7:00-7:59".
https://repmastered.icza.net
moktira *
Profile Blog Joined October 2010
Ireland1543 Posts
October 20 2023 07:36 GMT
#107
Have you thought about writing this up for an academic publication?
If in doubt, differentiate and set equal to zero
zimp
Profile Blog Joined November 2008
Hungary951 Posts
Last Edited: 2023-10-22 13:54:35
October 22 2023 13:43 GMT
#108
thank you! great!
I see that the majority of the games are new, but what was wrong with reps before 2018? do you consider the dataset too small before that?

[image loading]
agentzimp
TL+ Member
JieXian
Profile Blog Joined August 2008
Malaysia4677 Posts
October 23 2023 14:34 GMT
#109
wow this is amazing and fascinating. Thank you for your work!
Please send me a PM of any song you like that I most probably never heard of! I am looking for people to chat about writing and producing music | https://www.youtube.com/watch?v=noD-bsOcxuU |
Kraekkling
Profile Blog Joined June 2007
448 Posts
October 23 2023 16:07 GMT
#110
First, thanks to everyone who found this whole thing interesting.

If you really enjoyed the insights, consider donating a small amount to repmastered, which made this possible. Many more working hours were needed for that project and there are recurring costs to host all those replays...

On October 17 2023 03:08 Cryoc wrote:
Very nice analysis. Could you maybe also add the cumulative distribution functions of your histograms? This would paint a better picture of how much a time frame with a very one-sided win rate actually matters for the overall win rate.


I thought about this but couldn't come up with a non-cluttered way to visualize this. In particular for the plots with multiple selections, you'd need cumulative distributions for each of them. Also when looking at mutlipe ones on the same plot they'd need to be normalized. And, one might need to adjust some of the selection criteria to deal with low statistics in the samples. That's where I mostly stopped thinking about it. If you have something specific in mind, I might look into it.

On October 22 2023 22:43 zimp wrote:
I see that the majority of the games are new, but what was wrong with reps before 2018? do you consider the dataset too small before that?


No particular reason for that, the cutoff is arbitrary. But yes, we're losing a negligible amount of data.
(*^^)(^*)
scroogec
Profile Joined October 2023
1 Post
October 23 2023 17:27 GMT
#111
--- Nuked ---
LUCKY_NOOB
Profile Blog Joined June 2013
Bulgaria1459 Posts
October 24 2023 18:15 GMT
#112
On October 22 2023 22:43 zimp wrote:
thank you! great!
I see that the majority of the games are new, but what was wrong with reps before 2018? do you consider the dataset too small before that?

[image loading]


I wouldn't say it's a small data set even before 2018 (just comparatively small).

I think the newer the data the better. As with time more things have been figured out.
ko-fi.com/luckynoob
tankgirl
Profile Blog Joined May 2016
Canada421 Posts
October 28 2023 10:56 GMT
#113
somewhat related question

is it possible to search the repmastered database for matching hotkeys between different playernames?

e.g. analyze hotkey usage from old FlaSh replays and then cross-check recent/new replays to see if he is active again...
https://tl.net/forum/brood-war/627255-progamer-settings
TL+ Member
Diggity
Profile Blog Joined September 2007
United States806 Posts
November 08 2023 21:32 GMT
#114
This is amazing work

I would love to see a comparison of race win percentages vs mmr which could then be correlated to the timings to see what players potentially need to work on in mmr brackets for a particular race. Ex) +1 timings seem effective in tvp up until this MMR range at which point terran need to incorporate new strategies

As an aside, is it possible to replace the yellow with another color? It is challenging to track visually.
AntiHack
Profile Joined January 2009
Switzerland553 Posts
November 13 2023 17:07 GMT
#115
On October 11 2023 12:21 TT1 wrote:
Is it possible to do this with progamer replays or 2500+ ladder games from cwal (the ladder games would prob be way better cus of sample size)? I know the sample size would be way less but the quality of games is way more important for this type of analysis. Thanks for this tho, great work.


There's already one with all the ASL/KSL games featured in a recent Tasteless video
"I am very tired of your grammar errors" - Zoler[MB]
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