python preprocessing.py /local/home/puwong/bitcoin/data/mining_support
python preprocessing.py /local/home/puwong/bitcoin/data/mining_speculation
python preprocessing.py /local/home/puwong/bitcoin/data/miners
python preprocessing.py /local/home/puwong/bitcoin/data/hardware
python preprocessing.py /local/home/puwong/bitcoin/data/groupbuys
python preprocessing.py /local/home/puwong/bitcoin/data/pools
python preprocessing.py /local/home/puwong/bitcoin/data/mining