Search and retrieval of plasma wave forms: Structural pattern recognition approach (original) (raw)

Search and retrieval of plasma wave forms: Structural pattern recognition approach

Abstract Databases for fusion experiments are designed to store several million wave forms. Temporal evolution signals show the same patterns under the same plasma conditions and, therefore, pattern recognition techniques can allow identification of similar plasma behaviors. Further developments in this area must be focused on four aspects: large databases, feature extraction, similarity function, and search/retrieval efficiency. This article describes an approach for pattern searching within wave forms.