Question

Compare different principles used in self organization map

Answer 1

Answer.....

• Growing hierarchical self-organizing maps (GHSOM) used by Chifu and Letia (2008) consist of a set of SOMs (particularly bidimensional grids)

1. Organized as nodes in a hierarchy. GHSOM is initialized with a hierarchy mirroring the one in the taxonomy, and concepts are mapped to some nodes in the corresponding SOM by initializing the node’s weights with the vector description of the concept;

1. Other unmapped nodes are initialized randomly.

1. The process continues top-down for all the SOM nodes in the (predefined) initial tree hierarchy.