Principal component analysis
Dendrogram
Wastewater
Sewage treatment
Environmental science
Effluent
Hierarchical clustering
European union
Cluster (spacecraft)
Multivariate statistics
Chemometrics
Biomass (ecology)
Environmental engineering
Computer science
Cluster analysis
Statistics
Mathematics
Ecology
Machine learning
Biology
Environmental health
Medicine
Population
Genetic diversity
Business
Economic policy
Programming language
