Analyzing data with the Pareto set 

Data analysis using the Pareto set / Pareto-domination / skyline query/ skyline operator. Implemented in github.com/tommyod/paretoset.
At 03:08 I said "I can find an apartment that's both cheaper and has more square meters", but I meant to say "I can find an apartment that's either cheaper or has more square meters, without being worse in any dimension".