normalized database schema
disable checks
add bfs traversal
rename import.py
add subset script
fix bug in getpass
refactor caching in models
batch related model selection
batch insert related models
move insert_dataset into separate file
fix double recording bug
several fixes, including case and length issues
add subset script
update batch.sh and add profiling scripts
add sample script
executable sample.sh
fix password issue
more printouts
flush
less printing