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SOMnia for DOS/Windows

SOMnia constructs Self-Organizing Maps. It employs Teuvo Kohonen's competitive learning algorithm to approximate high-dimensional data with a two-dimensional grid ('map').

For an introduction see Hertz, J., Krogh, A., Palmer, R. G. (1991), Introduction to the theory of neural computation, Reading, MA: Addison-Wesley, pp. 217-228, 232-246.

Sample applications are reported in Mazanec, J. A. (1995), 'Competition among European Tourist Cities: A Comparative Analysis with Multidimensional Scaling and Self-Organizing Maps', Tourism Economics, Vol. 1, Nr. 3, pp. 283-302 and in Mazanec, J. A. (1995), 'Positioning Analysis with Self-Organizing Maps, An Exploratory Study on Luxury Hotels', The Cornell Hotel & Restaurant Administration Quarterly, Vol. 36, Nr. 6, pp. 80-95. The data used in these analyses are available in the test data files CITY468.DAT (26 cities * 18 years = 468 cases) and HOTEL152.DAT (4 hotels * 38 respondents = 152 cases).

Note: You have to read and accept our download conditions before!

File	Version	OS	Location	Size
SOMnia for DOS	1.22	DOS	HTTP	50 KB
SOMnia for Windows	1.51	Win 3.1 with Win32s or higher	HTTP	145 KB
Testdata			HTTP	55 KB
city468.dat 26 cities * 18 years			HTTP	61 KB
hotel152.dat 4 hotels * 38 respondents			HTTP	11 KB
Win32s Extension		Win 3.1	HTTP HTTP	1.1 MB (Disk 1) 1.3 MB (Disk 2)