Hattrick - User contributions [en]

Total Skill Index

2009-10-07T21:13:10Z

Bartje: /* TSI approximation */

{{Interwiki/TSI}}

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.

As a general rule, the higher the TSI, the better the player. 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.

TSI for [[goalkeeper]]s is a different matter. The higher TSI for a keeper, the better. Since a keeper only specializes in one skill, [[goalkeeping]] skill can be measured quite accurately based on their TSI and form (''e.g.'' using http://www.hottrick.org/hattrick_keeper_tool.php).

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.

[[Set Pieces]] and [[experience]] do not affect the TSI.

== TSI approximation ==
For Goalkeepers an approximated formula for TSI calculation is:

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

With <tt>f</tt> = Form and <tt>s</tt> = Skill (1 = disastrous, 2 = wretched, etc.)

For outfield players, the formula for TSI calculation is of the following form:

TSI = sqrt(f)*sqrt(st)*(A*[pl^3+d^3+sc^3^]+B*w^3+C*pa^3)^2

With <tt>f</tt> = Form (1 = disastrous, 2 = wretched, etc.

With <tt>st</tt> = Stamina skill

With <tt>pl</tt> = Playmaking skill

With <tt>d</tt> = Defending skill

With <tt>sc</tt> = Scoring skill

With <tt>w</tt> = Winger skill

With <tt>pa</tt> = Passing skill

With A,B,C being fixed constants (up to you to find them ;-))

== External links ==
* A very useful TSI Calculator for Hattrick Players can be found in [http://www.chechesa.net/Hattrick/TSI-Calculator Hattrick TSI Calculator by Chechesa]

[[Category: Game Concepts]]

Total Skill Index

2009-10-07T21:12:33Z

Bartje: /* TSI approximation */

{{Interwiki/TSI}}

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.

As a general rule, the higher the TSI, the better the player. 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.

TSI for [[goalkeeper]]s is a different matter. The higher TSI for a keeper, the better. Since a keeper only specializes in one skill, [[goalkeeping]] skill can be measured quite accurately based on their TSI and form (''e.g.'' using http://www.hottrick.org/hattrick_keeper_tool.php).

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.

[[Set Pieces]] and [[experience]] do not affect the TSI.

== TSI approximation ==
For Goalkeepers an approximated formula for TSI calculation is:

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

With <tt>f</tt> = Form and <tt>s</tt> = Skill (1 = disastrous, 2 = wretched, etc.)

For outfield players, the formula for TSI calculation is of the following form:

TSI = sqrt(f)*sqrt(st)*(A*[p^3+d^3+sc^3^]+B*w^3+C*p^3)^2

With <tt>f</tt> = Form (1 = disastrous, 2 = wretched, etc.

With <tt>st</tt> = Stamina skill

With <tt>p</tt> = Playmaking skill

With <tt>d</tt> = Defending skill

With <tt>sc</tt> = Scoring skill

With <tt>w</tt> = Winger skill

With <tt>p</tt> = Passing skill

With A,B,C being fixed constants (up to you to find them ;-))

== External links ==
* A very useful TSI Calculator for Hattrick Players can be found in [http://www.chechesa.net/Hattrick/TSI-Calculator Hattrick TSI Calculator by Chechesa]

[[Category: Game Concepts]]

Total Skill Index

2009-10-07T21:11:15Z

Bartje: /* TSI approximation */

{{Interwiki/TSI}}

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.

As a general rule, the higher the TSI, the better the player. 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.

TSI for [[goalkeeper]]s is a different matter. The higher TSI for a keeper, the better. Since a keeper only specializes in one skill, [[goalkeeping]] skill can be measured quite accurately based on their TSI and form (''e.g.'' using http://www.hottrick.org/hattrick_keeper_tool.php).

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.

[[Set Pieces]] and [[experience]] do not affect the TSI.

== TSI approximation ==
For Goalkeepers an approximated formula for TSI calculation is:

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

With <tt>f</tt> = Form and <tt>s</tt> = Skill (1 = disastrous, 2 = wretched, etc.)

For outfield players, the formula for TSI calculation is of the following form:

TSI = sqrt(f)*sqrt(st)*(A*[p^3+d^3+sc^3^]+B*w^3+C*p^3)^2

With <tt>f</tt> = Form (1 = disastrous, 2 = wretched, etc.)
With <tt>st</tt> = Stamina skill
With <tt>p</tt> = Playmaking skill
With <tt>d</tt> = Defending skill
With <tt>sc</tt> = Scoring skill
With <tt>w</tt> = Winger skill
With <tt>p</tt> = Passing skill
With A,B,C being fixed constants (for you to find them ;-))

== External links ==
* A very useful TSI Calculator for Hattrick Players can be found in [http://www.chechesa.net/Hattrick/TSI-Calculator Hattrick TSI Calculator by Chechesa]

[[Category: Game Concepts]]