New results for hierarchical bimodal classification and partitioning

We present a study of the main methods for two-mode classification, hierarchical and partitioning. A Lance & Williams recurrence formula is proposed for hierarchical two-mode classification using the Eckes & Orlik criterion. Also, the simulated annealing technique is implemented for global optimization in two-mode partitioning, obtaining better results than usual methods like alternating exchanges and dynamic clusters or k-means.