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The '''Total Skill Index''' (or '''TSI''') is an official measure of a [[player]]'s abilities. The formula used for the calculation is unknown, but several somewhat successful attempts have been made in approximating the true function. It is rumoured that [[HT-Bjorn]] proclaimed he'll change the TSI calculation formula as soon as someone figures it out.{{ref|ref1}}
{{Interwiki/TSI}}
The '''Total Skill Index''' (or '''TSI''') is an official measure of a [[player]]'s abilities.  


Obviously, the higher TSI, the better. But it isn't very accurate because an average all around player (inadequate in a few positions) would have a higher TSI than specialized players (excellent in only one). It increases with training and it can increase and decrease with [[form]]. Sometimes your TSI will drop even though your form does not. (That is a background form change for example when you go from a high passable to a low passable form level. It doesn't show up as a form change but you dropped a sublevel)
[[Set Pieces]] and [[experience]] do not affect the TSI, but [[form]] and [[stamina]] are relevant for calculation.


TSI for goalies is a different matter. The highest TSI for a goalie the better. Since a goalie only specializes in one skill it can be measured and you can see how close your goalie is to the next level by entering your TSI into http://www.hottrick.org/hattrick_keeper_tool.php. Also keepers have higher TSI than their specialized equavalents.
== Meaning ==
As a general rule, the higher the TSI, the better the player. This is always true for a keeper, however, there are problems with this theory.  A player who is average in several [[skills]] (''e.g.'' inadequate in [[defending]], [[passing]], and [[scoring]], but with excellent stamina) will often have a higher TSI than a more specialized player (''e.g.'' excellent defending, but everything else poor or lower). TSI also increases with [[training]] and it can also increase and decrease with [[form]]. Sometimes, TSI will drop even though form does not.  This is an easy way of spotting that a background form change has occurred, and the form [[sub-level]] has decreased.


A common theory is that both form and stamina have a multiplying effect on the TSI, whereas the other skills (for keepers, goaltending only) contribute as a sum of exponential functions.
== Formulas ==
The formula used for the calculation is unknown, but several somewhat successful attempts have been made in approximating the true function. {{based on opinion}}It is rumoured that [[HT-Bjorn]] proclaimed he'll change the TSI calculation formula as soon as someone figures it out.


The [[Set Pieces]] [[Skills | skill]] doesn't affect the TSI.
=== Goalkeeper case ===
Interestingly, [[goalkeeper]]s typically have higher TSI at the same skill level than outfield players.  A common theory is that both form and stamina have a multiplying effect on the TSI, whereas the other skills (for keepers, goaltending only) contribute as a sum of exponential functions.


=== TSI approximation ===
TSI for goalkeepers is a different matter, since a keeper only specializes in one skill. [[Goalkeeping]] [[sub Level|sub level]] can be measured quite accurately based on their TSI and form. For Goalkeepers an approximated formula for TSI calculation is:<blockquote>{{Hu/Formula||formula=TSI<small>goalkeeper</small> = [ ( 0.025f + 0.1 ) * [ 10 ( s - 1 ) ] ^(3.4) ] / 100}}<small>
with f = Form
and s = Skill  (1 = disastrous, 2 = wretched, etc.)</small></blockquote>


For Goalkeepers an approximated formula for TSI calculation is:
=== Outfield players case ===
TSI = ((0,025 * FORM + 0,1) * ( 10*(SKILL-1) ) ^ (3.4))/1000
For outfield players, the formula for TSI calculation should be as the following one:
With Form and Skill ranked from 1 (disastrous)
<blockquote>{{Hu/Formula||formula=TSI = sqrt(f) * sqrt(st) * ( X * [ PM^3 + DE^3 + SC^3] + Y * WN^3 + Z * PS^3 ) ^2}}
<small>
f = Form (1 = disastrous, 2 = wretched, etc.)<br>
st = Stamina skill  <br>
PM, DE, SC, WN, PS are the skills (Playmaking, Defending,Scoring, Wing, Passing skill)<br>
X, Y, Z are fixed constants (unknown)</small></blockquote>


== External links ==
* A very useful TSI Calculator for Hattrick Players can be found in [http://hattrick.chechesa.com/en Hattrick TSI Calculator by Chechesa]
* Use [http://iht.smdesign.es/en/Tools/Sports/Sub-level-Keepers-Tool keeper tool] ti calculate skill level.


 
[[Category: Game Concepts]]
 
 
===What is the Question to the Answer of the Meaning of TSI?===
{{note|ref1}} Just_Y note: Really, REALLY sorry to barge in with non-HT related stuff, but I am obliged to quote "The Hitchhiker's Guide To The Galaxy" by Douglas Adams, stating before the begining of "The Resturant at the End of the Universe" at one side of the page -
 
"There is a thoery which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizzare and inexplicable."
 
Then you flip the page.
 
"There is another thoery which states
  that this has already happened."
 
You ought to agree that the Estimated Player Price was much more explicable than the TSI.. The base of TSI must be 42.

Latest revision as of 15:25, 20 September 2020

INTERWIKI

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The Total Skill Index (or TSI) is an official measure of a player's abilities.

Set Pieces and experience do not affect the TSI, but form and stamina are relevant for calculation.

Meaning

As a general rule, the higher the TSI, the better the player. This is always true for a keeper, however, there are problems with this theory. A player who is average in several skills (e.g. inadequate in defending, passing, and scoring, but with excellent stamina) will often have a higher TSI than a more specialized player (e.g. excellent defending, but everything else poor or lower). TSI also increases with training and it can also increase and decrease with form. Sometimes, TSI will drop even though form does not. This is an easy way of spotting that a background form change has occurred, and the form sub-level has decreased.

Formulas

The formula used for the calculation is unknown, but several somewhat successful attempts have been made in approximating the true function.

The following contents are based on the opinion of Hattrick users — which means that their veracity and accuracy have not been confirmed by any official statement, and consequently they do not necessarily reflect the game reality. Please take this into consideration!

It is rumoured that HT-Bjorn proclaimed he'll change the TSI calculation formula as soon as someone figures it out.

Goalkeeper case

Interestingly, goalkeepers typically have higher TSI at the same skill level than outfield players. A common theory is that both form and stamina have a multiplying effect on the TSI, whereas the other skills (for keepers, goaltending only) contribute as a sum of exponential functions.

TSI for goalkeepers is a different matter, since a keeper only specializes in one skill. Goalkeeping sub level can be measured quite accurately based on their TSI and form. For Goalkeepers an approximated formula for TSI calculation is:

TSIgoalkeeper = [ ( 0.025f + 0.1 ) * [ 10 ( s - 1 ) ] ^(3.4) ] / 100

with f = Form

and s = Skill (1 = disastrous, 2 = wretched, etc.)

Outfield players case

For outfield players, the formula for TSI calculation should be as the following one:

TSI = sqrt(f) * sqrt(st) * ( X * [ PM^3 + DE^3 + SC^3] + Y * WN^3 + Z * PS^3 ) ^2

f = Form (1 = disastrous, 2 = wretched, etc.)
st = Stamina skill
PM, DE, SC, WN, PS are the skills (Playmaking, Defending,Scoring, Wing, Passing skill)

X, Y, Z are fixed constants (unknown)

External links

Retrieved from "https://wiki.hattrick.org/index.php?title=Total_Skill_Index&oldid=423224"