1) design ML system to identify unwanted content eg violence on FB\n\t* quickly identify unwanted content\n\t* image can be "bad" but if no "bad" text then ok\n2) design FB group recommender system\n\t* show top 10 recommendations\n\t* maximize join rate\n\t* have group membership, group content + meta data, group search data\n\t* no previous CTR data to train on\n

1) design ML system to identify unwanted content eg violence on FB\n\t quickly identify unwanted content\n\t image can be "bad" but if no "bad" text then ok\n2)