Lernmatrix
Lernmatrix (German for "learning matrix") is a special type of artificial neural network (ANN) architecture, similar to associative memory, invented around 1960 by Karl Steinbuch, a pioneer in computer science and ANNs.{{Cite journal| last= Steinbuch | first= Karl | title= Die Lernmatrix | journal= Kybernetik, 1(1):36-45 | date = 1961}}
This model for learning systems could establish complex associations between certain sets of characteristics (e.g., letters of an alphabet) and their meanings.
Function
The Lernmatrix generally consists of n "characteristic lines" and m "meaning lines," where each characteristic line is connected to each meaning line, similar to how neurons in the brain are connected by synapses. (This can be realized in various ways – according to Steinbuch, this could be done by hardware or software).
To train a Lernmatrix, values are specified on the corresponding characteristic and meaning lines (binary or real); then the connections between all pairs of characteristic and meaning lines are strengthened by the Hebb rule. A trained Lernmatrix, when given a specific input on the characteristic lines, activates the corresponding meaning lines. In modern language, it is a linear projection module.
By appropriately interconnecting several Lernmatrices, a switching system can be built that, after completing certain training phases, is ultimately able to automatically determine the most probable associated meaning for an input sequence of features.[http://edoc.hu-berlin.de/e_rzm/15/biener-klaus-1997-12-01/PDF/17.pdf Karl Steinbuch – Informatiker der ersten Stunde] at edoc.hu-berlin.de, accessed on March 1, 2015.
See also
External links
- [http://adsabs.harvard.edu/abs/2005SPIE.5916..233S A new theoretical framework for the Steinbuch's Lernmatrix]
- [http://adsabs.harvard.edu/abs/2005SPIE.5916..247A Pattern recognition and classification using weightless neural networks (WNN) and Steinbuch Lernmatrix]
- [https://web.archive.org/web/20070310215907/http://www.gcn.com/print/17_29/32977-1.html DARPA project will study neural network processes]
- [http://groups.google.com/group/de.sci.informatik.ki/browse_thread/thread/86fb56b2875154db/e72e240277c0f92c Discussion in the newsgroup de.sci.informatik.ki] {{in lang|de}}
- [https://www.itiv.kit.edu/downloads/HilbergUeberSteinbuch%5b1%5d.pdf Wolfgang Hilberg: "Karl Steinbuch, ein zu Unrecht vergessener Pionier der künstlichen neuronalen Systeme", Communication from the Institute for Data Technology at the Technical University of Darmstadt, 1995, PDF file (size approx. 4 MB)] {{in lang|de}} accessed on June 17, 2017
Further reading
- Karl Steinbuch: Automat und Mensch. 1st ed. Springer 1961. {{in lang|de}}