#ai × 3,251
# × 517
education × 160
online × 137
probability × 113
bayes × 84
#ml × 78
#coursera × 47
#udacity × 42
#nlp × 40
nlp × 36
off-topic × 31
online-courses × 31
stanford × 29
heuristics × 26
machine-learning × 25
future × 19
#edx × 18
moocs × 16
google × 14
mooc × 13
#cs101 × 11
#mooc × 11
caltech × 5
sliding × 5
online-education × 4
#courses × 2
#help × 2
#starcraft × 2
random × 2
#competition × 1
#game × 1
#hoarding × 1
#new-courses × 1
#python × 1
#tournament × 1
8-puzzle × 1
logistic × 1
softmax × 1