human male AIDS Dementia Complex Adult Algorithms Benchmarking Cluster Analysis Cluster analysis Cluster qualities Clustering Clustering algorithms Cognition Cohort Studies Data Analysis Depression Dispersion Energy Metabolism Ethnic Groups Gene Expression Profiling HIV Seropositivity HIV associated dementia HIV-associated neurocognitive disorders Human immunodeficiency virus infection Humans Identified parameter Individuality Iterative clustering Iterative methods Leukocytes, Mononuclear Male