180 training and 60 test reviews, 558 words in the vocabulary
accuracy on id: 0.694  (36 reviews)
accuracy on en: 0.750  (24 reviews)
overall accuracy: 0.717
most negative: bau slow tidak smelly kusut of mahal rude buruk salah
most positive: bersih fast rapi friendly clean bagus puas mantap membantu fresh
