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#1239980 - Mon Aug 12 2019 10:00 PM Re: Tweaking Knockout Selection
gracious1 Offline
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Registered: Tue May 01 2012
Posts: 1750
Loc: New York USA
Originally Posted By: Terry
Knockout fixed. Was a side-effect issue stemming from my ranking alteration.


Ah! So this week we will see maybe a shake-up in the make-up of the tournaments? grin
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#1240010 - Tue Aug 13 2019 09:18 AM Re: Tweaking Knockout Selection
Terry Offline
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Registered: Wed Dec 31 1969
Posts: 21449
Loc: USA
Yes, the new algorithm went into effect for this week. Most people probably won't notice a difference because it was okay for them in the first place. A few outliers may see slightly different competition. As always there's a random element so you will on occasion be placed higher or lower than you should.

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#1240011 - Tue Aug 13 2019 09:30 AM Re: Tweaking Knockout Selection
lonely-lady Offline
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Registered: Thu Jun 19 2014
Posts: 6795
Loc: England UK
I noticed. The gaps between players' KO points are enormous now.
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#1240018 - Tue Aug 13 2019 11:08 AM Re: Tweaking Knockout Selection
CmdrK Offline
Multiloquent

Registered: Sun Jan 17 2010
Posts: 2223
Loc: Nevada USA
I know it's just getting started and we'll see how it plays out over time, but in my tournament, at least, GOAT is not going to stand for Greatest Of All Time but Sacrificial. tongue
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#1241731 - Mon Sep 02 2019 09:24 AM Re: Tweaking Knockout Selection
sr71lives Offline
Participant

Registered: Sat Jan 30 2010
Posts: 25
Loc: Virginia USA
I enjoy playing KO. I've got 509 KO points with 53 wins. If I didn't like challenges, I still wouldn't be playing either KO or FT after 9 years, and over 9mil points. I have no issues with the way KO was set up (before the recent tweaks). I realize that it will get tougher as I move into the higher brackets. currently, I've been playing among the divisions #21 through #15. I always agreed with the adage, "If you don't play against tougher competition, you won't improve." I, personally, like challenges, obviously.

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#1241755 - Mon Sep 02 2019 01:29 PM Re: Tweaking Knockout Selection
gracious1 Offline
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Registered: Tue May 01 2012
Posts: 1750
Loc: New York USA
Originally Posted By: Terry
Yes, the new algorithm went into effect for this week. Most people probably won't notice a difference because it was okay for them in the first place. A few outliers may see slightly different competition. As always there's a random element so you will on occasion be placed higher or lower than you should.


I'm seeing tougher competition, and getting wiped out in the first week. How about everyone else? Are you doing better, worse, or the same? confused


Edited by gracious1 (Mon Sep 02 2019 01:35 PM)
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#1241772 - Mon Sep 02 2019 03:55 PM Re: Tweaking Knockout Selection
CmdrK Offline
Multiloquent

Registered: Sun Jan 17 2010
Posts: 2223
Loc: Nevada USA
So far, I'm seeing a lot of familiar names with the same results - good days, bad days.
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#1241778 - Mon Sep 02 2019 04:51 PM Re: Tweaking Knockout Selection
flopsymopsy Online   content

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Registered: Sat May 17 2008
Posts: 5470
Loc: Northampton England UK
I started playing again a couple of weeks ago - still got wiped out but at least I didn't get pulled into Set 1 as my reward, which is what used to happen. laugh
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#1241791 - Tue Sep 03 2019 12:21 AM Re: Tweaking Knockout Selection
rossian Offline
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Registered: Sat Jun 10 2006
Posts: 3908
Loc: Merseyside UK
It's working better for me. I'm not permanently in Set 1 anymore. And I've avoided the rabbit, too.
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#1241836 - Tue Sep 03 2019 11:30 AM Re: Tweaking Knockout Selection
JanIQ Offline
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Registered: Thu Jul 09 2009
Posts: 911
Loc: Antwerp
Belgium
Originally Posted By: rossian
And I've avoided the rabbit, too.


So what are you going to do ? Duck the rabbit?!
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#1241837 - Tue Sep 03 2019 11:43 AM Re: Tweaking Knockout Selection
flopsymopsy Online   content

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Registered: Sat May 17 2008
Posts: 5470
Loc: Northampton England UK
She's more likely to deck the rabbit - don't ask me how I know!
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#1245026 - Tue Oct 08 2019 12:25 PM Re: Tweaking Knockout Selection
nasty_liar Offline
Mainstay

Registered: Sun Oct 05 2008
Posts: 507
Loc: Sheffield
Yorkshire UK
There is a player in featured tournament 73 with 407 KO points and 63 weekly wins this week. That seems a little unusual doesn't it? Most of the other players in that bracket have around 100 KO points and some have yet to even win a weekly KO! Seems like a mismatch....

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#1245027 - Tue Oct 08 2019 12:58 PM Re: Tweaking Knockout Selection
CmdrK Offline
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Registered: Sun Jan 17 2010
Posts: 2223
Loc: Nevada USA
Hey Nas, I think that might be called the 'fox in the henhouse' gambit!
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#1245061 - Tue Oct 08 2019 06:34 PM Re: Tweaking Knockout Selection
nasty_liar Offline
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Registered: Sun Oct 05 2008
Posts: 507
Loc: Sheffield
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Absolutely!

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#1245079 - Tue Oct 08 2019 10:18 PM Re: Tweaking Knockout Selection
TriviaFan22 Offline
Enthusiast

Registered: Sat Apr 27 2013
Posts: 357
Loc: Texas USA
Originally Posted By: nasty_liar
There is a player in featured tournament 73 with 407 KO points and 63 weekly wins this week. That seems a little unusual doesn't it? Most of the other players in that bracket have around 100 KO points and some have yet to even win a weekly KO! Seems like a mismatch....


I was just coming to post this but you beat me to it.

Terry has some splainin' to do!

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#1245248 - Thu Oct 10 2019 02:31 PM Re: Tweaking Knockout Selection
CoachLamb Offline
Participant

Registered: Fri Jun 01 2018
Posts: 42
Loc: DC USA
Originally Posted By: nasty_liar
There is a player in featured tournament 73 with 407 KO points and 63 weekly wins this week. That seems a little unusual doesn't it? Most of the other players in that bracket have around 100 KO points and some have yet to even win a weekly KO! Seems like a mismatch....


Is there a reason that player was placed into that tournament? I'm more curious than anything else but I do feel kinda bad for the other players in that tourney.

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#1245252 - Thu Oct 10 2019 04:56 PM Re: Tweaking Knockout Selection
windrush Offline
Enthusiast

Registered: Sat Apr 28 2012
Posts: 479
Loc: South Australia
Originally Posted By: CmdrK
Hey Nas, I think that might be called the 'fox in the henhouse' gambit!


Perhaps Whodat's the cat among the pigeons? Not his/her fault for being in that round, but rather a "fowl" play for the others in the tourney.

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#1245506 - Sat Oct 12 2019 08:20 AM Re: Tweaking Knockout Selection
nasty_liar Offline
Mainstay

Registered: Sun Oct 05 2008
Posts: 507
Loc: Sheffield
Yorkshire UK
Any ideas then?

The mentioned player not only won tourney 73 but comfortably had the four highest scores in that tourney bracket. It goes without saying that the player carries no blame for being there, we don't choose where the system puts us!

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#1245514 - Sat Oct 12 2019 09:39 AM Re: Tweaking Knockout Selection
namrewsna Offline
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Registered: Wed Jul 16 2014
Posts: 777
Loc: Utah USA
I need to read back about the changes. I wasnt aware they had occured as I have stepped away from Knockout a bit. Even in the "old way" you would see cases like that every now and then with a player dropping well below their expected placement range for tourney numbers. In those cases affecting my tourney I have been both the fox in the henhouse and one of the 15 chickens being brutalized wink


I always assumed it worked something along the lines of a random selector that drew players from the top 48 or so names one at a time to fill brackets, starting with #1 and working down the list. So someone among the top 48 in the registered pool of players would be expected to pop up somewhere in the top 3 tourneys but there is a chance they could slip lower, with decreasing likelyhood as you move further and further from their natural range..and that pattern would persist all the way from top to bottom.


It has to be something along those lines because the "out of bounds" players always seem to be lower than expected rather than higher.


Edited by namrewsna (Sat Oct 12 2019 09:40 AM)

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#1245542 - Sat Oct 12 2019 02:17 PM Re: Tweaking Knockout Selection
nasty_liar Offline
Mainstay

Registered: Sun Oct 05 2008
Posts: 507
Loc: Sheffield
Yorkshire UK
It's a long way down though Answerman.

The player in question has WAY more weekly wins than anyone featured even in tourney 31 and a similar number of KO points.

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#1245548 - Sat Oct 12 2019 03:58 PM Re: Tweaking Knockout Selection
namrewsna Offline
Mainstay

Registered: Wed Jul 16 2014
Posts: 777
Loc: Utah USA
Can you tell approximately where they should have been? I think the biggest one I have seen was roughly a 35-40 tourney drop..

that was me. I was in the very bottom tourney after I had been a knockout regular for at least a year or two. I felt ridiculous up aganst a bunch of new players with 0-5 wins.

then I got worried I would run into the next generation's superstar in their debut and suffer embarassing defeat to a false underdog...but no. It was as you describe here, lots of mismatches and an easy weekly win.

That felt worse to me than when it was the other way around and there was some heavyweight beating up on me and/or my peer group.

Terry made it sound like he was adjusting the coding for it to make this less likely or impossible. I can get behind that as long as variation is maintained and we dont see too much of the xact same group from week to week.


Edited by namrewsna (Sat Oct 12 2019 03:59 PM)

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#1245590 - Sun Oct 13 2019 06:28 AM Re: Tweaking Knockout Selection
windrush Offline
Enthusiast

Registered: Sat Apr 28 2012
Posts: 479
Loc: South Australia
It's as Nasty Liar reports, namrewsna, Whodat has roughly the same number of KO points as those in #31. There is only one other player in Tourney 73 with more than 100 KO points (142) and the rest average considerably below 100. Lowest man on the totem pole had 72. Must have wondered what hit him!

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#1245591 - Sun Oct 13 2019 06:51 AM Re: Tweaking Knockout Selection
WesleyCrusher Offline

Administrator

Registered: Thu Sep 04 2008
Posts: 7583
Loc: Germany
I don't think the changes affected the chance of dropping down really far. Only the ranking criteria were changed. As far as I know, selection works as follows:

1) Rank all the players
2) Put the top X of them into a pool (X might be 16, but is probably more)
3) Randomly pick one player from the pool, put that player into tournament 1 slot 1
4) Fill up the free pool slot with the next player in ranking order
5) Randomly pick a player for the next tournament slot
6) Repeat until everyone is assigned.

The change would have affected only step 1.

The chance to "survive" (drop down) one set of X drawings is roughly 1/e = 36.79%. If X were 16, the chance to drop 10 tournaments would be a bit better than 1 in 100,000. 20 tournaments, 1 in 10 billion. 30 tournaments... probably not in this universe smile. If X is larger, the drop would be appropriately further - so for X=32, you could expect to drop down 20 tournaments with 1 in 100k plays. X=50, the 1 per 100k chance would give roughly 31 tournaments.

By the way, we could roughly determine X by observation if we knew the exact ranking formula and my selection algorithm conjecture is correct. Tournament 1 slot 1 must always be a player from the top X, so if we, for example, find the #42 ranked player in that slot, we'd know X is at least 42. If we were to find a player ranked 70 in tournament 2 slot 3 (19th drawn), we'd know X is at least 70-19+1 = 52.


Edited by WesleyCrusher (Sun Oct 13 2019 07:01 AM)
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#1245681 - Sun Oct 13 2019 09:33 PM Re: Tweaking Knockout Selection
CoachLamb Offline
Participant

Registered: Fri Jun 01 2018
Posts: 42
Loc: DC USA
I am curious to know the true algorithm and randomness that decides how players are ranked because it must be so real variable randomness for that to happen.

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