finish task3
Merge branch 'master' of github.com:essex405/graph-mining-rdbms
Merge branch 'master' of github.com:essex405/graph-mining-rdbms
Merge pull request #6 from spininertia/master

finish task3
add survey
modify survey
add some text
Merge pull request #7 from spininertia/master

add survey
Merge pull request #8 from pondering/mis

add some text