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Approximator is program for experimental data approximation and interpolation (20 dependencies for select). Graphical charts. Export to Gnumeric/OpenOffice Calc/Microsoft Excel. Multi-language interface.
The new site is at http://psychometricon.net/libirt/
The new site is at http://psychometricon.net/libirt/
Library of functions to estimate the items and abilities from the responses of subjects to a questionnaire. The IRT models supported are the logistic model, the multivariate logistic model, the graded model and smoothing by penalization and kernel.
An R package for metrology. metRology provides classes and calculation and plotting functions for metrology applications, including measurement uncertainty estimation and (eventually) inter-laboratory metrology comparison studies.
FreeNorm is a cross-tabulation web application adapted from SurveyComplete's real-time reporting system. Currently it can run tabs on extremely large datasets, export to Excel, read ASCII data, and understand table definitions in the UNCLE tab language.