Module org.gsusers.gsmv

Package org.gsusers.gsmv.utilities

Class VarianceComponent

java.lang.Object

org.gsusers.gsmv.utilities.VarianceComponent

public class VarianceComponent
extends Object

'VarianceComponent' (vc) is a class of objects for the calculation of Generalizability Coefficients used in 'Nest', method 'formatResults'. There is one vc object for each actual variance component value. The object calculates the contribution of this variance component to the final Generalization Coefficient. VC also handles Brennan's rules for calculating sigma2(tau), sigma2(delta), and sigma2(Delta) [Brennan, Generalizability Theory, pp 144/5] For each variance component it thus determines three booleans (b_tau, b_delta, and b_Delta) to signify that this variance component gets added to the corresponding sigma square. This step then occurs in Nest.formatResults. During D-Studies it changes the signature item of fixed facets to 'f', thus excluding them from contributing to the error terms delta and Delta.

See Also:

• utilities.VarianceComponent

Constructor Summary

Constructors

Constructor	Description
VarianceComponent(Nest _nest, String _line, gsLogger _logger)	Class constructor

Method Summary

Modifier and Type	Method	Description
Boolean	b_delta()	getter of confirmation that vc is delta
Boolean	b_Delta()	getter of confirmation that vc is Delta
Boolean	b_tau()	getter of confirmation that vc is a tau
void	doCoefficient(StringBuilder sbOut)	Assembles formal lexical description of coefficient
Double	getDenominator()	getter of vc denominator
Double	getVarianceComponent()	getter of vc value

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

VarianceComponent

public VarianceComponent(Nest _nest,
 String _line,
 gsLogger _logger)

Class constructor

Parameters:

_nest - pointer to Nest

_line - String argument formally characterizing the configuration of the variance component

_logger - pointer to org.gs_users.gs_lv.GS_Application logger

Method Details

doCoefficient

public void doCoefficient(StringBuilder sbOut)

Assembles formal lexical description of coefficient

Parameters:

sbOut - pointer to string builder returning the description

getDenominator

public Double getDenominator()

getter of vc denominator

Returns:

Double denominator

getVarianceComponent

public Double getVarianceComponent()

getter of vc value

Returns:

Double vc value

b_tau

public Boolean b_tau()

getter of confirmation that vc is a tau

Returns:

Boolean confirmation

b_delta

public Boolean b_delta()

getter of confirmation that vc is delta

Returns:

Boolean confirmation

b_Delta

public Boolean b_Delta()

getter of confirmation that vc is Delta

Returns:

Boolean confirmation