Data Classification Component in a Deductive Database System and Its Application to Protein Structural Analysis

We also thank the anonymous referees for their valuable comments. 1 Summary Scientic database systems for the analysis of genes and proteins are becoming very important these days. We have developed a deductive database system PACADE for analyzing the three dimensional and secondary structures of proteins. In this paper, we describe the statistical data classication component of PACADE. We implemented the component for cluster analysis and discrimination analysis. In addition, we enhanced the aggregation function in order to calculate the characteristic values which are useful for data classication. By using the cluster analysis function, the proteins are thereby classied into dierent types of structural characteristics. The results of these structural analysis experiments are also described in this paper.