eff.disc-class

effDisc_new

the values of the distribution function at the support points.

support

the effective degrees of freedom of the distribution.

the sample of effectiveness scores used to fit the distribution. Defaults to
<code>NULL</code>.

This is the base S3 class for all discrete effectiveness distributions, which is itself a
subclass of <code>eff</code>. Function <code>effDisc_new</code> is the constructor of the class.

Provides tools for the stochastic simulation of effectiveness scores to mitigate
data-related limitations of Information Retrieval evaluation research, as described in Urbano and
Nagler (2018) <doi:10.1145/3209978.3210043>. These tools include: fitting, selection and plotting
distributions to model system effectiveness, transformation towards a prespecified expected value,
proxy to fitting of copula models based on these distributions, and simulation of new evaluation
data from these distributions and copula models.

`mean`	the expected value.
`var`	the variance.
`df`	the degrees of freedom (effective number of parameters) for model selection.
`support`	the support of the distribution.
`data`	the sample data used to fit the distribution, or `NULL` if none.
`model`	a list with the family-specific data.

eff.disc-class: Class `eff.disc`

Description

Usage

Arguments

Value

Details

See Also