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At first, through the establishment of the air threat ranking index system of the ship-self-defense, we get the subjection function of each index, and then the weight of threat assessment indicators are get by the ordered binary comparison, at last, the air targets are sequencing by the gray TOPSIS, the impact of the discrimination coefficient to the threat sequencing is studied at the same time.
Each potential vacancy is associated with a value of the discrimination coefficient c, which is distributed across vacancies over a range from zero to cmax.
In Fisher criterion, the importance of the feature f is measured on the basis of the so-called discrimination coefficient S ab (f).
Equations (3) and (4) express the value to a worker of type i of being unemployed (Ui) versus being employed in a position with discrimination coefficient c (Wi(c)).
A vacancy's discrimination coefficient manifests itself as a tax on the employer who hires a type B worker into the vacancy, but it may influence the wage paid to a type A worker hired into that vacancy.
We represent this cost by the parameter ϵ, assumed to be distributed uniformly across vacancies on the interval 0 to Rϵ, independent of the discrimination coefficient c, which is also assumed to be distributed uniformly across potential vacancies.
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Accordingly while the reading section discrimination coefficients were analysed using parametric one-way ANOVAs, the structure section coefficients were analysed using non-parametric Friedman tests.
For the reading section discrimination coefficients, the one way ANOVAs conducted separately on the z-transformed Rpbis and the DI coefficients established that there were no significant differences between the mean values of each of the sets of coefficients (z-transformed Rpbis: F = 0.241, p > 0.05; DI: F = 0.545, p > 0.05; df = 2, 21).
They also found no significant differences in the discrimination coefficients of the different option versions, but for two of the three tests used they found the 3-option version to be significantly more reliable than the 4-option version, while for the third test they found the 5-option test to be more reliable than the 4-option test.
The discrimination coefficients for all 6 stations are quite homogeneous (range:.57 to.57).57
Base on the results of the item discrimination coefficients and the item-total correlations, one item was deleted.
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