word set ---- web pages ------------------------------------------------ 1234 ---- 2,3,5 computer_vision, computer_systems, programming_languages, computation_theory --- RPI_2, MIT, UofR_1 125 --- 1,3,4,5 computer_vision, computer_systems, semiconductors --- RPI_1, MIT, NWU, UofR_2
We can now classify the web pages RPI_2, MIT, UofR_1 as belonging to CS departments, while the pages RPI_1, MIT, NWU, UofR_2 belong to EE departments. Note that MIT belongs to both CS and EE.