Raza Point score table for IPC Athletics
Raza point score table is the new solution that is used for IPC athletics combined events and started
in March 2010.
The Raza point score table is based on the following statistical analysis:
o
o
o
o
o
o
Data from Paralympic Games and World Championships from 2000 and onwards has been
used as the basic platform
IPC World ranking from 2004 and onwards was also used to map trends for each class
Each event and class had their own specific trend
A common statistical model*** was used to map each events trend
o This statistical model was applied to all classes and converted into 1000 points for
each combine class
o It takes into account population size of each class and the performance based on
population size
Every year there will be a review and analysis of results and the point score table will be
updated
Compared to previous models for the point score table new World Records and single
outstanding performance will have very little impact (if any) to adjustments of the point
score table
*** Explanation about the Statistical Model Used
Sigmoid function:
Many natural processes and complex system learning curves display a history dependent
progression from small beginnings that accelerates and approaches a climax over time. A sigmoid
curve is produced by a mathematical function having an "S" shape.
Gompertz function:
A Gompertz curve or Gompertz function, named after Benjamin Gompertz, is a sigmoid function. It is
a type of mathematical model for a time series, where growth is slowest at the start and end of a
time period.
Revisions:
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
MSP
F32
F33
F34
F35
F36
F37
F38
F42
F44
F46
F52
F53
F54
F55
F56
F57
F58
Shot Put
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
WSP
F32
F33
F34
F35
F36
F37
F38
F42
F44
F46
F52
F53
F54
F55
F56
F57
F58
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
MDT
Discus Throw
F32
WDT
F33
WDT
F34
WDT
F35
WDT
F36
WDT
F37
WDT
F38
WDT
F51
WDT
F52
WDT
F53
WDT
F54
WDT
F55
F56
F57
F58
F35
F36
F37
F51
F52
F53
F54
F55
F56
F57
F58
MJT
MJT
MJT
MJT
MJT
MJT
MJT
MJT
MJT
MJT
MJT
MJT
MJT
Javelin Throw
F33
WJT
F34
WJT
F35
WJT
F36
WJT
F37
WJT
F38
WJT
F52
WJT
F53
WJT
F54
WJT
F55
F56
F57
F58
F33
F34
F52
F53
F54
F55
F56
F57
F58
Table 1: Classes Driven Through Master Equations
The Raza System has gone through some vigorous changes since its introduction in March 2010. One
of the most important breakthroughs is the introduction of a master equation for combined class
groups. These master equations are then used to drive the sub equations for the classes that are
within the combined class group.
o
o
o
o
The latest Revision of the System (Version 5) has the above classes (Table 1) which are
derived using master equations.
The master equations were derived using a similar method already explained but was
applied to all valid class combinations that the IPC has defined for the 2011 World
Championships and the 2012 Paralympic Games.
Factors such as historic change in implement weights and their effects on World Records are
also analysed in this latest revision.
Natural progressions of best performance over the past years are studied in depth and
recent performances are weighted which then form the basis of computing sub equations.
A graphical illustration of the combined classes and the implements weights can be shown by means
of a matrix. The matrix below for Shot, Javelin and Discus for both men and Women also includes the
weights of implements. All valid combinations are marked by ”x” in the grid and each set of these “x”
has one major equation.
Men's Shot Put
MSP Class
F12
Class Implements 7.26
F12
7.26
x
F32
2.00
F33
3.00
F34
4.00
F35
4.00
F36
4.00
F37
5.00
F38
5.00
F40
4.00
F42
6.00
F44
6.00
F46
6.00
F52
2.00
F53
3.00
F54
4.00
F55
4.00
F56
4.00
F57
4.00
F58
5.00
F32
2
F33
3
x
x
x
x
Class
WSP
F11 F12 F13
Class Implements 4.00 4.00 4.00
F11
4.00
x
F12
4.00
x
4.00
F13
2.00
F32
F33
3.00
F34
3.00
F35
3.00
F36
3.00
F37
3.00
F38
3.00
3.00
F40
F42
4.00
F44
4.00
4.00
F46
2.00
F52
F53
3.00
F54
3.00
F55
3.00
F56
3.00
3.00
F57
4.00
F58
F34
4
F35
4
F36
4
x
x
x
x
F37
5
F38
5
x
x
x
x
F40
4
F42
6
F44
6
F46
6
x
x
x
x
F52
2
F53
3
x
x
x
x
F54
4
F55
4
F56
4
F57
4
F58
5
x
x
x
x
x
x
x
x
x
x
x
x
x
F54
3
F55
3
F56
3
x
x
x
x
x
x
x
x
x
x
x
x
F32
2
F33
3
F34
3
x
x
x
x
x
x
x
x
x
F35
3
x
x
Women's Shot Put
F36 F37 F38 F40
3
3
3
3
F42
4
F44
4
F46
4
x
x
x
x
x
x
x
x
x
F52
2
F53
3
x
x
x
x
F57
3
F58
4
x
x
x
x
x
x
x
x
Men's Discus Throw
MDT
Class
F11 F12 F13 F32 F33 F34 F35 F36 F37 F38 F40 F42 F44 F46 F51 F52 F53 F54 F55 F56 F57 F58
Class Implements 2.00 2.00 2.00 1.00 1.00 1.00 1.00 1.00 1.00 1.50 1.00 1.50 1.50 1.50 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
F11
2.00
x
F12
2.00
x
F13
2.00
F32
1.00
x
x
x
F33
1.00
x
x
x
F34
1.00
x
x
x
F35
1.00
x
x
F36
1.00
x
x
F37
1.00
x
x
F38
1.50
x
x
F40
1.00
x
F42
1.50
x
F44
1.50
x
F46
1.50
x
F51
1.00
x
x
x
F52
1.00
x
x
x
F53
1.00
x
x
x
F54
1.00
x
x
x
F55
1.00
x
x
x
F56
1.00
x
x
x
F57
1.00
x
x
F58
1.00
x
x
WDT
Class
F11
Class Implements 1
F11
1
F12
1
F32
1
F33
1
F34
1
F35
1
F36
1
F37
1
F40
0.75
F42
1
F44
1
F46
1
F51
1
F52
1
F53
1
F54
1
F55
1
F56
1
F57
1
F58
1
F12
1
MJT
Class
F33
Class Implements 0.6
F33
0.6
x
F34
0.6
x
F35
0.6
F36
0.6
F37
0.6
F38
0.8
F40
0.6
F42
0.8
F44
0.8
F46
0.8
F52
0.6
F53
0.6
F54
0.6
F55
0.6
F56
0.6
F57
0.6
F58
0.6
F34
0.6
x
x
WJT
Class
F33
Class Implements 0.6
F33
0.6
x
F34
0.6
x
F35
0.6
F36
0.6
F37
0.6
F38
0.6
F40
0.4
F42
0.6
F44
0.6
F46
0.6
F52
0.6
x
F53
0.6
x
F54
0.6
F55
0.6
F56
0.6
F57
0.6
F58
0.6
F34
0.6
x
x
F32
1
F33
1
F34
1
F35
1
Women's Discus Throw
F36 F37 F40 F42 F44
1
1 0.75 1
1
F46
1
F51
1
F52
1
F53
1
x
x
x
x
x
x
x
x
x
F54
1
F55
1
F56
1
x
x
x
x
x
x
x
x
x
F57
1
F58
1
x
x
x
x
x
x
x
x
x
x
x
F35
0.6
F36
0.6
x
x
x
x
F37
0.6
x
x
x
x
F35
0.6
F36
0.6
F37
0.6
Men's Javelin Throw
F38 F40 F42 F44
0.8 0.6 0.8 0.8
F46
0.8
F52
0.6
F53
0.6
x
x
x
x
F54
0.6
F55
0.6
F56
0.6
x
x
x
x
x
x
x
x
x
F57
0.6
F58
0.6
x
x
x
x
F57
0.6
F58
0.6
x
x
x
x
x
x
Women's Javelin Throw
F38 F40 F42 F44
0.6 0.4 0.6 0.6
F46
0.6
F52
0.6
x
x
F53
0.6
x
x
x
x
x
x
F54
0.6
F55
0.6
F56
0.6
x
x
x
x
x
x
x
x
x