preprocessing gives error for unrecognized features
preprocessing gives error for unrecognized features

vftens/RocAlphaGo,Rochester-NRT/RocAlphaGo,Rochester-NRT/AlphaGo,Rochester-NRT/AlphaGo,hiropppe/RocAlphaGo,wrongu/RocAlphaGo,Rochester-NRT/AlphaGo,MaMiFreak/RocAlphaGo