C:/programs/etirm/src/ItemNR.h File Reference

ItemNR class, derived from Item, maintains information calculated for an Item object in the E-step so that it can be used in the M-step to estimate item parameters. More...

#include "etirm/Item.h"

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Namespaces
namespace	etirm
Classes
class	etirm::ItemNR< D >
	Class, derived from Item, to maintain information calculated for an Item object in the E-step so that it can be used in the M-step to estimate item parameters. More...

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Detailed Description

ItemNR class, derived from Item, maintains information calculated for an Item object in the E-step so that it can be used in the M-step to estimate item parameters.

Information stored from the E-step includes the expected number of examinees in each category of the discrete latent variable of those that took the item (these usually are denoted by the letter "n"), and for each item response the expected number of examinees in each category of the discrete latent variable who gave that item response of those examinees who took the item (these usually are denoted by the letter "r").

Estimation Toolkit for Item Response Models (ETIRM) http://www.smallwaters.com/software/cpp/etirm.html

Author(s): Werner Wothke, maintenance (http://www.smallwaters.com) Brad Hanson (http://www.b-a-h.com/) See the file LICENSE for information on usage and redistribution.

Copyright (C) 2008, Werner Wothke Copyright (c) 2000-2001, Bradley A. Hanson

Definition in file ItemNR.h.

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