php 1 dataset 1 machine learning 1 ml 1 tutorial 1 clustering 1 k-means 1 clusterer 1 data science 1 Example Project 1 cross validation 1 php ml 1 rubixml 1 rubix ml 1 color clustering 1 contingency table 1 k means 1 synthetic data 1 contingency-table 1 cross-validation 1 k-means-plus-plus 1 kmeans 1 machine-learning 1 machine-learning-tutorial 1 php-machine-learning 1 php-ml 1 rubix-ml 1 synthetic-data 1 synthetic-dataset-generation 1 unsupervised-learning 1