imp2state:
Transformation from Implications to Knowledge States
Description
imp2state transforms a set of implications (ought to be
a surmise relation) to the corresponding set of knowledge states
(the quasi ordinal knowledge space).
Usage
imp2state(imp, items)
Arguments
imp
a required object of class set
representing the set of implications, for instance obtained from a
call to iita.
items
a required numeric giving the number of items of the
domain taken as basis for imp.
Value
If the arguments imp and items are of required types,
imp2state returns a matrix consisting of ones or zeros (the
quasi ordinal knowledge space), in which each row represents the
$1$/$0$-pattern of a knowledge state.
References
Doignon, J.-P. and Falmagne, J.-C. (1999) Knowledge Spaces.
Berlin, Heidelberg, and New York: Springer-Verlag.
Uenlue, A. and Sargin, A. (2010) DAKS: An R package for data
analysis methods in knowledge space theory. Journal of Statistical
Software, 37(2), 1--31.
URL http://www.jstatsoft.org/v37/i02/.
See Also
state2imp for transformation from knowledge states to
implications. See also DAKS-package for general
information about this package.