Applications concern primarily the processing of responses to open ended questions in socio-economic sample surveys.
- Special emphasis on:
Complementary use of visualization techniques (Principal Component Analysis, Two-way and Multiple Correspondence Analysis) and clustering techniques (hybrid method using both hierarchical clustering and k-means technique; Self Organizing Maps (SOM).
Assessments of visualization techniques: resampling techniques (bootstrap, partial bootstrap, total bootstrap, bootstrapping variables).
Three kinds of total bootstrap are provided: Total bootstrap type 1: simple change of sign of the axes for the replicated analyses, when needed.
Total bootstrap type 2: as type 1, plus: corrections for possible interversions of axes.
Total bootstrap type 3: corrections of the replicated principal subspaces using procrustean analyses.
Contiguity analysis and related methods. Kohonen maps (SOM).
The present version of this free software contains a series of typical examples of data processing and textual data processing.
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