add more statistics for cc
a little optimization
add util functions
Merge branch 'efficient_radius'
Merge branch 'master' of github.com:essex405/graph-mining-rdbms
optimize radius
optimize radius update
add util function to load dataset
modify interface for testing
elaborate method part
add cc experiment
add testing for cc and radius
initialize fm string using python instead of udf
fix figure position
avoid duplicated edge insertion
Merge pull request #63 from spininertia/master

lots of change..