 If one associates draws from the base measure formula_1 with every table, the resulting distribution over the sample space formula_102 is a random sample of a Dirichlet process.The Chinese restaurant process is related to the Pólya urn sampling scheme which yields samples from finite Dirichlet distributions.Because customers sit at a table with a probability proportional to the number of customers already sitting at the table, two properties of the DP can be deduced