id	keyword
cana-1803	recommendation
cana-1803	tweets
cana-1803	system
cana-1803	agent
cana-1803	recommender
cana-1803	users
cana-1803	matrix
cana-1803	time
cana-1803	error
cana-1803	fmcr
cana-1803	step
cana-1803	collaborative
cana-1803	mean