δ-Clustering of Monotone Profiles

In Chaps. and 8, we discussed several testing procedures to detect differentially expressed genes with monotone relationship with respect to dose. The second question of primary interest in dose-response studies is the nature (or the shape of curve) of the dose-response relationship. In the context of dose-response microarray experiments, we wish to group (or classify) genes with similar dose-response relationship. Similar to the previous chapters, the subset of genes with monotone relationship is of interest.