Unsupervised Recursive Sequence Processing

We propose a self organizing map (SOM) for sequences by extending standard SOM by two features, the recursive update of Sperduti [7] and the hyperbolic neighborhood of Ritter [5]. While the former integrates the currently presented item and recent map activations, the latter allows representation of temporally possibly exponentially growing sequence diversification. Discrete and real-valued sequences can be processed efficiently with this method as demonstrated in three experiments.

• Type: Conference
• Year: 2003
• Where: ESANN
• Authors: Marc Strickert, Barbara Hammer
• Keywords: ESANN 2003, ESANN 2007, Recursive Update, Self Organizing Map, Standard Som