Algorithms|Cluster Analysis|Computational Biology|Computer Simulation|Discriminant Analysis|Gene Expression Profiling|Gene Expression Regulation, Neoplastic|Humans|Least-Squares Analysis|Models, Genetic|Models, Statistical|Neoplasms|Nonlinear Dynamics|Oligonucleotide Array Sequence Analysis|Pattern Recognition, Automated|Reproducibility of Results|Sensitivity and Specificity|Sequence Alignment|Software