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An incomplete guide to bnet 2.0 ranking system - Page 2

Forum Index > SC2 General
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Sejong
Profile Joined March 2010
Korea (South)153 Posts
March 14 2010 19:24 GMT
#21
I guess the only thing I am worried about is being locked into silver/gold and unable to get platinum because of early performance while learning. Is this a concern? Is it possible to get yourself locked out of the high levels because of early performance and limited re-ranking opportunities? That would be a big discouragement imo.

Will early low-performance make it extremely difficult (and so better to 're-roll') somehow, or is it possible to improve and reach the highest of the top level
Solomoth
Profile Joined February 2010
United States55 Posts
March 14 2010 19:32 GMT
#22
I've gotten 38 - 42pts for a wins frequently when I was still in silver league.... I'm in Platinum now.
Friend, "Do it for the Zorg!" Me, "It's Zerg not Zorg!" My friend trying to psyche me out in a game of beer pong.
TheTester
Profile Joined March 2010
United States172 Posts
March 14 2010 19:48 GMT
#23
Do rested points take a whole 24 hours to start going?
I've been sitting on bonus pool 294 and rested points 0 for more than a day I believe in 1v1, and I remember reading rested points accumulated at the rate of 1 per 4 hours independent of whether you played or not (which was true for when I actually had rested points). Is this a display bug or not?
G-Dy
Profile Joined April 2008
Germany91 Posts
March 15 2010 00:08 GMT
#24
What I really would like to know... How many players actually have been demoted? All I hear is that players get promoted from gold or even silver/bronze into platinum - but is the reverse possible, too ? For example that a platinum players get back to silver or bronze?
TheTester
Profile Joined March 2010
United States172 Posts
March 15 2010 01:32 GMT
#25
OK, I just tested this, and here's the results:

- I had 294 bonus pool 0 rested, didn't play for about 4 days.
- I played twice and lost twice, but the bonus pool jumped up to 345 after the first loss, rested points stayed 0.
- I won and it gave me +15 bonus points on the win, I now have 331 bonus pool. Note that I played a few hours later so the +1 point to bonus pool is ~consistent.

However, before my rested points hit 0, it would slowly regenerate and I wasn't paying attention to my bonus pool.

My hypothesis based on this:
a) The bonus pool is awarded on getting into a division.
b) Your rested pool works fine until you hit 0, at which point it appears to be bugged, and your bonus pool starts increasing instead of your rested points.
c) The 1 rested point/4 hours thing seems to be true.
daywiss
Profile Joined March 2010
United States83 Posts
March 15 2010 03:34 GMT
#26
sharing an account. placed into bronze, upgraded to gold, then fell into silver. i wasnt paying attention to the games played though. right now still in silver, so you can move both ways.
DarkChrono
Profile Joined March 2010
United States16 Posts
Last Edited: 2010-03-15 08:48:19
March 15 2010 08:46 GMT
#27
Like the WC3 ladder, you probably have an estimated skill level, which is hidden. This ranking is absolute across leagues, and changes much more quickly than your actual ranking. It determines who is favoured in a matchup, and determines who you play. Like WC3, the estimated skill level would be hidden, because it changes much more quickly than your visible ranking. (Blizzard doesn't want players with few games played to be ranked highly.) This is why people in bronze can play platinum players, and the fake-ELO (your visible ranking) correlates so poorly to the division you are currently in.

I don't imagine the internal ladder system has actually changed much from WC3. What has changed is the ranking they actually show you. There is fake-ELO instead of experience points, and they introduced divisions.

If all this is accurate, this means that the fake-ELO is not dependent at all on the division you are in. Another observation is that you apparently lose ELO when you increase divisions.

edit: hi Tamerlane
ForTheSwarm
Profile Blog Joined April 2009
United States556 Posts
March 15 2010 08:50 GMT
#28
Dude, this is awesome! I love math posts...
Whenever I see a dropship, my asshole tingles, because it knows whats coming... - TheAntZ
link0
Profile Joined March 2010
United States1071 Posts
March 15 2010 09:05 GMT
#29
On March 15 2010 01:54 bOOgyWC wrote:
Was anyone promoted twice yet? If so - after how many games?!

PS: I got promoted after exactly 30 games,too.


I was.

I went about 5-5 in my placement games and ended up in bronze. 30 ladder games later, I was promoted to silver.

About 200 games after that (and staying #1 in my silver div for a while), I went from silver to Platinum.
http://www.justin.tv/link0 - Gosu.Linko - http://www.facebook.com/link0
Half
Profile Joined March 2010
United States2554 Posts
March 15 2010 09:16 GMT
#30
My guess is that your given a hidden rating that changes very quickly. After x games, should your hidden rating be sufficiently deviant from your expected rating, the game reassigns you to a more suitable ladder.

Usually, I normally fight Silver opponents. Once, I played drunk, and the next day I fought straight bronze for like seven games. Now, I'm starting to fight lower gold/silver.

(I'm silver #12 so far)
Too Busy to Troll!
Icks
Profile Joined July 2009
France186 Posts
March 15 2010 12:43 GMT
#31
About the "favored player"...
On March 14 2010 19:54 Steve496 wrote:

What's been puzzling me lately is how they decide who's "favored" and by how much, and/or whether ratings can be compared across divisions of the same tier. That is: a couple days ago, while rated ~1500 (platinum), I played a player from another Platinum division who was rated somewhat lower (~1450, as I recall), yet he showed as slightly favored. Which implies either that:

a) Being "favored" includes factors other than simply your rating - it might, for instance, include your performance in various matchups (or whatever), or

b) Ratings aren't directly comparable between different divisions, even if both are (for instance) Platinum.

Anyone have any ideas about which might be the case?

b) Ratings aren't comparable, and the ranking within the division is relevant.

While i was ranked mid-bronze, after the second big wave, new divisions appeared, with very few players. I played against a player who had just finished his placement matches. So, he was a total newbie in bronze league, but still, n°3 of his division (because his div counted like 10 players), so he was favored. And i won many points.
Read to learn.
LaLuSh
Profile Blog Joined April 2003
Sweden2358 Posts
March 15 2010 13:18 GMT
#32
Smaller divisions might be awarded smaller bonus pools. There's certainly some sort of discrepancy between divisions when it comes to size.
Tamerlane
Profile Joined July 2009
Canada424 Posts
March 15 2010 16:24 GMT
#33
On March 15 2010 10:32 TheTester wrote:
OK, I just tested this, and here's the results:

- I had 294 bonus pool 0 rested, didn't play for about 4 days.
- I played twice and lost twice, but the bonus pool jumped up to 345 after the first loss, rested points stayed 0.
- I won and it gave me +15 bonus points on the win, I now have 331 bonus pool. Note that I played a few hours later so the +1 point to bonus pool is ~consistent.

However, before my rested points hit 0, it would slowly regenerate and I wasn't paying attention to my bonus pool.

My hypothesis based on this:
a) The bonus pool is awarded on getting into a division.
b) Your rested pool works fine until you hit 0, at which point it appears to be bugged, and your bonus pool starts increasing instead of your rested points.
c) The 1 rested point/4 hours thing seems to be true.


You dug something I didn't look at in details, so tyvm for the info you provided and your observations. I did try a couple things out myself and here's what I concluded (other than what is in the OP) :

- Your observation about the rested pool being bugged is correct, those points are added to the bonus pool after a defeat
- The bonus pool includes your rested points, regardless if you hit 0 or not
- Rested points are used before the rest of the bonus pool

On March 15 2010 21:43 Icks wrote:While i was ranked mid-bronze, after the second big wave, new divisions appeared, with very few players. I played against a player who had just finished his placement matches. So, he was a total newbie in bronze league, but still, n°3 of his division (because his div counted like 10 players), so he was favored. And i won many points.


It's not because he was #3 of his division that he was favored, I can't believe that Blizzard's bnet designers would be stupid enough to determine who is favored based on the player's rank in their division. That would be like them saying "ok guys, we got the best system we've ever done, but it's flawed so bad that Warcraft 2 ladder was better, lol." No, that was not a hyperbole.

Anyways, I will try to have a look at if there is any correlation between ranking/rating and "favored" status.

On March 15 2010 22:18 LaLuSh wrote:
Smaller divisions might be awarded smaller bonus pools. There's certainly some sort of discrepancy between divisions when it comes to size.


possibly yes, the bonus pool is affected by division size, but that's not the case for the number of points earned with a victory

and actually, that would make sense with the fact that bonus points are added to the pool on an irregular basis, I have noted that you get bonus points soon after joining a division, but it stopped after a while (other than for rested points) which would indicate that you get points added to the bonus pool when your division increases in size
starcraft911
Profile Blog Joined July 2008
Korea (South)1263 Posts
March 15 2010 16:33 GMT
#34
=> Reranking (edit: being moved from a league to another), if required, is done after the 30th game, no matter how you performed in the last few games. What is actually uncertain is if you get reranked at any point after that 30th game, I believe not.


That would make sense.. I was just saying in another thread that i picked up a friends ID who went 8-2 and was in gold and I played games for 1 day and got moved into platinum. I'm thinking it might have been around 30ish games because i was putting down around 20 a day for the first couple days.
probu
Profile Joined June 2009
Canada36 Posts
March 15 2010 20:07 GMT
#35
I'm confident that APM is considered when placing you into leagues, and perhaps even when determining who is favoured. I believe this because all my spammer friends are in higher divisions than me, yet we seem evenly matched when playing against each other. Also, it makes sense to consider APM.

Anyone have an idea on this?
Doomgaze
Profile Joined March 2010
Sweden89 Posts
Last Edited: 2010-03-15 20:17:16
March 15 2010 20:16 GMT
#36
I got some comps in 2v2 platinum and both me and my ally are slower than a sloth taking a shit when it comes to the "spamming-useless-commands"-department, so no, I'm 101% sure APM has nothing to do with it.

And if it by some retarded reason does:
WTS SC2 beta account
Tamerlane
Profile Joined July 2009
Canada424 Posts
Last Edited: 2010-03-15 20:20:44
March 15 2010 20:20 GMT
#37
On March 16 2010 05:07 probu wrote:
I'm confident that APM is considered when placing you into leagues, and perhaps even when determining who is favoured. I believe this because all my spammer friends are in higher divisions than me, yet we seem evenly matched when playing against each other. Also, it makes sense to consider APM.

Anyone have an idea on this?


I have a shitty APM and just been promoted to platinum (more on this later, trying to figure a couple things out first).
edahl
Profile Joined February 2008
Norway483 Posts
March 15 2010 20:28 GMT
#38
You take the absolute value of the y and the x, which doesn't seem to make much sense. Other than that, it seems a pretty sensible analysis.
Tamerlane
Profile Joined July 2009
Canada424 Posts
March 15 2010 22:08 GMT
#39
On March 16 2010 05:28 edahl wrote:
You take the absolute value of the y and the x, which doesn't seem to make much sense. Other than that, it seems a pretty sensible analysis.


I was too lazy to write down 4 formulae for each situation, that's the only reason why
edahl
Profile Joined February 2008
Norway483 Posts
Last Edited: 2010-03-15 23:35:48
March 15 2010 22:21 GMT
#40
You just need one formula y=12+x+z. I do suggest a slightly better notation letting p mean points, b mean bonus points and f mean points of favour. You might also want to let c be your constant 12, just because that is also subject to change. For brevity (and readability) your formula formula then reads
p=c+b+f, with c=12, b in {0,...,k} (where k is your bonus pool), and f in {-12,...,12}. Slight favour in either direction means f in {-3,...,3}, strong favour means f in {-12,...,-4, 4,...12}.

Either way, good work and interesting. I found the proposition that there's a "checkpoint" every 200 games interesting. Made me want to play more matches!

EDIT: I conjecture something down the following line. Let K={k1 (practice), k2 (copper), ..., k7} be a set of constants with k1<...<k7 (this set might simply be K={1,...,7}). Let p,q be players of some match m with ratings r(p),r(q), and let k(p),k(q) in K be the values in K associated to the players p,q. Let w(m) be the winner of the match, and l(m) the loser. Let m(w(m))=1, m(l(m))=-1 (we may call this the outcome sign). Then there exists a function deciding f(x) with x in {p,q} (deciding the f of each player) given by SOMETHING LIKE f(x)=m(x)|r(p)-r(q)|/(|k(p)-k(q)|+1).

Now, my proposed f is not the correct one, but it might get some of you down the correct line of reasoning. The functions I have provided may not be sufficient, i.e., there may be more cases and factors and relations cropping up.
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