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KDice Taxonomic Study Sample #1: Meet your Closest Relatives
Posted By: skrumgaer at 9:20 AM, Thursday January 29, 2009 EST
What follows is a dendrogram, or family tree, of a sample of 100 kdicers. What it intends to show is relatedness of players to each other. For any two players, the highest value of "h", or height, between them, is a measure of dissimilarity between the two. If you find yourself in the tree, offer comments on the similarities or difference between you and your "relatives".

This particular sample of 100 players is hemidemiskrumic, meaning, four equally spaced groups of 25 players spanning skrum's group (page 56 on the leaderboard) and the top group (page 1). The other intervening groups are page 37 and page 19.

From your comments and my analysis I will try to come up with a comprehensive taxonomic system for the classification of kdicers.


[Update 29 January 2009]

The stat work for this analysis was done by an online website, the official citation of is:
Wessa, P., (2008), Hierarchical Clustering (v1.0.2) in Free Statistics Software (v1.1.23-r3), Office for Research Development and Education, URL http://www.wessa.net/rwasp_hierarchicalclustering.wasp/

The Ward method was used because it minimizes variance, which is the same as saying it uses as much of the information as possible. I used the raw percentage data for first through seventh place finishes to compute these results. Since in theory we have only six independent variables, I should need to use only six of the seven levels of finishes. So I ran the data with seventh place omitted. Some of the branches got moved around, including those belonging to MadHat_Sam, moondust, and fiero600. I also did a run with fourth place, instead of seventh place, removed. In theory the results should be the same no matter which place was removed, but such did not turn out to be the case. There is a greater variance in fourth place finishes than seventh place. Though fourth place makes the least contribution to overall kdice score, it can be argued that two players who have significantly different percentages for fourth, though their other percentages show similar shapes, have different playing styles and should be classified as different.

One source of error in the data is the truncation of the percentages by Ryan. This leads to a range in percentage sums from 95% to 100% for all seven places. To correct for this, I did a run with all seven places, but normalized by player percentage sum. This supposedly minor adjustment rearranged many of the minor branches of the trees, but left the leaf pairings undisturbed. Conclusion: the data must be normalized.

[end 29 January update]

Run with all seven places of finish, unnormalized:

--[dendrogram w/ 2 branches and 100 members at h = 1.39]
|--[dendrogram w/ 2 branches and 6 members at h = 0.371]
| |--[dendrogram w/ 2 branches and 3 members at h = 0.238]
| | |--leaf "boilerjon"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.169]
| | |--leaf "pulver toast man"
| | `--leaf "jimmcguinn"
| `--[dendrogram w/ 2 branches and 3 members at h = 0.323]
| |--leaf "YevgenyBk"
| `--[dendrogram w/ 2 branches and 2 members at h = 0.199]
| |--leaf "hjdfgeteyr"
| `--leaf "jim2674"
`--[dendrogram w/ 2 branches and 94 members at h = 1.29]
|--[dendrogram w/ 2 branches and 41 members at h = 0.631]
| |--[dendrogram w/ 2 branches and 13 members at h = 0.44]
| | |--[dendrogram w/ 2 branches and 3 members at h = 0.197]
| | | |--leaf "fiero600"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.119]
| | | |--leaf "jurlyk"
| | | `--leaf "Pharao"
| | `--[dendrogram w/ 2 branches and 10 members at h = 0.226]
| | |--[dendrogram w/ 2 branches and 4 members at h = 0.129]
| | | |--leaf "komando80"
| | | `--[dendrogram w/ 2 branches and 3 members at h = 0.0697]
| | | |--leaf "Akila"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0424]
| | | |--leaf "mmmboobies"
| | | `--leaf "mangoo"
| | `--[dendrogram w/ 2 branches and 6 members at h = 0.199]
| | |--leaf "aardvarks"
| | `--[dendrogram w/ 2 branches and 5 members at h = 0.143]
| | |--leaf "Pifi"
| | `--[dendrogram w/ 2 branches and 4 members at h = 0.103]
| | |--[dendrogram w/ 2 branches and 2 members at h = 0.0648]
| | | |--leaf "brisk"
| | | `--leaf "skrumgaer"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.0671]
| | |--leaf "lala123456"
| | `--leaf "Mirabilis"
| `--[dendrogram w/ 2 branches and 28 members at h = 0.544]
| |--[dendrogram w/ 2 branches and 11 members at h = 0.272]
| | |--[dendrogram w/ 2 branches and 5 members at h = 0.128]
| | | |--[dendrogram w/ 2 branches and 3 members at h = 0.0556]
| | | | |--leaf "fcuku"
| | | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0436]
| | | | |--leaf "Gdott"
| | | | `--leaf "Dr Leech"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0632]
| | | |--leaf "beyazguvercinus"
| | | `--leaf "GG.Schönebörger"
| | `--[dendrogram w/ 2 branches and 6 members at h = 0.136]
| | |--leaf "eurasianbro"
| | `--[dendrogram w/ 2 branches and 5 members at h = 0.127]
| | |--[dendrogram w/ 2 branches and 3 members at h = 0.0648]
| | | |--leaf "MsCat"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.049]
| | | |--leaf "ji-jo"
| | | `--leaf "Luin"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.0825]
| | |--leaf "mr Kruezfeld"
| | `--leaf "Moroccan Jasmine"
| `--[dendrogram w/ 2 branches and 17 members at h = 0.418]
| |--[dendrogram w/ 2 branches and 9 members at h = 0.179]
| | |--[dendrogram w/ 2 branches and 3 members at h = 0.106]
| | | |--leaf "Shevar"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0624]
| | | |--leaf "lesplaydices"
| | | `--leaf "jpc4p"
| | `--[dendrogram w/ 2 branches and 6 members at h = 0.145]
| | |--[dendrogram w/ 2 branches and 2 members at h = 0.0361]
| | | |--leaf "cnkcnk"
| | | `--leaf "Raubritter"
| | `--[dendrogram w/ 2 branches and 4 members at h = 0.0704]
| | |--[dendrogram w/ 2 branches and 2 members at h = 0.04]
| | | |--leaf "pityu"
| | | `--leaf "Shondven"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.049]
| | |--leaf "chaiNblade"
| | `--leaf "maurum"
| `--[dendrogram w/ 2 branches and 8 members at h = 0.201]
| |--[dendrogram w/ 2 branches and 5 members at h = 0.155]
| | |--leaf "matt 1234"
| | `--[dendrogram w/ 2 branches and 4 members at h = 0.11]
| | |--[dendrogram w/ 2 branches and 2 members at h = 0.0436]
| | | |--leaf "PsykomanT"
| | | `--leaf "IhlieDaily"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.0557]
| | |--leaf "GreGGWar"
| | `--leaf "ZOUILLE95850"
| `--[dendrogram w/ 2 branches and 3 members at h = 0.172]
| |--leaf "timmm"
| `--[dendrogram w/ 2 branches and 2 members at h = 0.107]
| |--leaf "Friedz"
| `--leaf "itrecal"
`--[dendrogram w/ 2 branches and 53 members at h = 0.998]
|--[dendrogram w/ 2 branches and 45 members at h = 0.59]
| |--[dendrogram w/ 2 branches and 13 members at h = 0.329]
| | |--[dendrogram w/ 2 branches and 7 members at h = 0.152]
| | | |--[dendrogram w/ 2 branches and 4 members at h = 0.0777]
| | | | |--[dendrogram w/ 2 branches and 2 members at h = 0.0412]
| | | | | |--leaf "Orlafede"
| | | | | `--leaf "miki00"
| | | | `--[dendrogram w/ 2 branches and 2 members at h = 0.051]
| | | | |--leaf "aurian7"
| | | | `--leaf "MudDobber"
| | | `--[dendrogram w/ 2 branches and 3 members at h = 0.109]
| | | |--leaf "Albert C"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0787]
| | | |--leaf "hatty"
| | | `--leaf "PJDev"
| | `--[dendrogram w/ 2 branches and 6 members at h = 0.160]
| | |--[dendrogram w/ 2 branches and 4 members at h = 0.102]
| | | |--[dendrogram w/ 2 branches and 2 members at h = 0.064]
| | | | |--leaf "topare"
| | | | `--leaf "The Chode"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0781]
| | | |--leaf "cwwyatt"
| | | `--leaf "goJoin.com"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.111]
| | |--leaf "Big Jumblies"
| | `--leaf "Revilo"
| `--[dendrogram w/ 2 branches and 32 members at h = 0.415]
| |--[dendrogram w/ 2 branches and 16 members at h = 0.239]
| | |--[dendrogram w/ 2 branches and 3 members at h = 0.0864]
| | | |--leaf "Tunzy"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0574]
| | | |--leaf "janLOL"
| | | `--leaf "rodelo"
| | `--[dendrogram w/ 2 branches and 13 members at h = 0.175]
| | |--[dendrogram w/ 2 branches and 9 members at h = 0.107]
| | | |--[dendrogram w/ 2 branches and 4 members at h = 0.0864]
| | | | |--leaf "Egle"
| | | | `--[dendrogram w/ 2 branches and 3 members at h = 0.0533]
| | | | |--leaf "riesi1904"
| | | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0332]
| | | | |--leaf "idnera"
| | | | `--leaf "Matt Braun"
| | | `--[dendrogram w/ 2 branches and 5 members at h = 0.0911]
| | | |--[dendrogram w/ 2 branches and 3 members at h = 0.0432]
| | | | |--leaf "ma1achi"
| | | | `--[dendrogram w/ 2 branches and 2 members at h = 0.04]
| | | | |--leaf "Who am I ?"
| | | | `--leaf "mrmot"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0566]
| | | |--leaf "potato27"
| | | `--leaf "bsn"
| | `--[dendrogram w/ 2 branches and 4 members at h = 0.145]
| | |--leaf "baloo"
| | `--[dendrogram w/ 2 branches and 3 members at h = 0.0432]
| | |--leaf "Mitsi the cat"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.04]
| | |--leaf "jbw"
| | `--leaf "nyos"
| `--[dendrogram w/ 2 branches and 16 members at h = 0.279]
| |--[dendrogram w/ 2 branches and 10 members at h = 0.171]
| | |--[dendrogram w/ 2 branches and 3 members at h = 0.0867]
| | | |--leaf "last place"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.06]
| | | |--leaf "fatboy98"
| | | `--leaf "gereffi"
| | `--[dendrogram w/ 2 branches and 7 members at h = 0.0942]
| | |--[dendrogram w/ 2 branches and 4 members at h = 0.0525]
| | | |--[dendrogram w/ 2 branches and 2 members at h = 0.03]
| | | | |--leaf "Leek Step"
| | | | `--leaf "Takadade"
| | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0361]
| | | |--leaf "Pat Whalen"
| | | `--leaf "1HAPPYBOY"
| | `--[dendrogram w/ 2 branches and 3 members at h = 0.0653]
| | |--leaf "shadolin"
| | `--[dendrogram w/ 2 branches and 2 members at h = 0.0436]
| | |--leaf "habit1"
| | `--leaf "Mr.-T"
| `--[dendrogram w/ 2 branches and 6 members at h = 0.255]
| |--[dendrogram w/ 2 branches and 2 members at h = 0.052]
| | |--leaf "MadHat_Sam"
| | `--leaf "eeeekekekeke"
| `--[dendrogram w/ 2 branches and 4 members at h = 0.135]
| |--[dendrogram w/ 2 branches and 2 members at h = 0.04]
| | |--leaf "Easy A"
| | `--leaf "Art54"
| `--[dendrogram w/ 2 branches and 2 members at h = 0.0707]
| |--leaf "ACG"
| `--leaf "Vinter"
`--[dendrogram w/ 2 branches and 8 members at h = 0.735]
|--[dendrogram w/ 2 branches and 2 members at h = 0.396]
| |--leaf "smumustang"
| `--leaf "Zete02"
`--[dendrogram w/ 2 branches and 6 members at h = 0.401]
|--[dendrogram w/ 2 branches and 3 members at h = 0.159]
| |--leaf "moondust"
| `--[dendrogram w/ 2 branches and 2 members at h = 0.107]
| |--leaf "ropat"
| `--leaf "arwesome"
`--[dendrogram w/ 2 branches and 3 members at h = 0.268]
|--leaf "yay"
`--[dendrogram w/ 2 branches and 2 members at h = 0.0927]
|--leaf "gawron"
`--leaf "ImagoDei"

« First ‹ Previous Replies 11 - 20 of 24 Next › Last »
Mikeypoo wrote
at 11:18 AM, Tuesday January 27, 2009 EST
Skrum could you run the player 'Pennsylvania' through your sample?
Mikeypoo wrote
at 11:21 AM, Tuesday January 27, 2009 EST
Also could you turn on the "batphone" and tell Ryan to read the forums? The 'bots' are getting restless.
skrumgaer wrote
at 3:27 PM, Tuesday January 27, 2009 EST
jpc4c:

Your profile and les' are lion-like, but a little bumpy from the paucity of games played.

mhs:

Your profile has some similarity to your usual "horse" shape, but again, there is paucity of games played.

Since tournament play began, regular game profiles are not as well-shaped as they once were.
jethr0 wrote
at 5:27 PM, Tuesday January 27, 2009 EST
I wish i knew what the fuck was going on here. It looks pretty cool.
Leek Step wrote
at 8:37 AM, Wednesday January 28, 2009 EST
What does it mean that Leek Step has the minimum h value listed?
skrumgaer wrote
at 10:15 AM, Wednesday January 28, 2009 EST
Leek Step:

It means that you and Takadade are less different from each other than any other two players in the tree.
fcuku wrote
at 11:08 AM, Wednesday January 28, 2009 EST
| | `--leaf "Mirabilis"
| `--[dendrogram w/ 2 branches and 28 members at h = 0.544]
| |--[dendrogram w/ 2 branches and 11 members at h = 0.272]
| | |--[dendrogram w/ 2 branches and 5 members at h = 0.128]
| | | |--[dendrogram w/ 2 branches and 3 members at h = 0.0556]
| | | | |--leaf "fcuku"
| | | | `--[dendrogram w/ 2 branches and 2 members at h = 0.0436]
| | | | |--leaf "Gdott"



oh god, does this mean im related to gdott?
potato27 wrote
at 8:45 PM, Thursday January 29, 2009 EST
Explain me plz skrum: )
skrumgaer wrote
at 10:38 AM, Friday January 30, 2009 EST
potato27:

The dendrogram says that you and bsn are classified among the horses, having a relatively large percentage of firsts and sevenths with lower percentages in the middle. This suggests a playing strategy focused on avoiding negative dom. MadHat_Sam is the consummate horse, but he has not played enough regular games this month for his profile to take the classic horse shape.

Other dominant forms are the lions (having highest percentage at first place, then sloping downward), hyenas (maximum is at second place), rhinos (having two humps and sloping down at each end), and dromedaries (having lower second place than first and third).
Big Jumblies wrote
at 7:26 PM, Tuesday February 3, 2009 EST
I remember someone making a post about this a while ago. In regards to what type of player ppl were. Some players either go for a win by taking risks and get close to 1st or the risks get them a 7th. Others when having a bad game try to minimize their losses by sweet talking their way to a 4th or 5th. Then there's the Stoude effect. I wish someone could find that post. Thanks for officially compiling this info Skrum!
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