glorot initialization, fixed bug in region score, step-wise training

classifiers/answer_classifier/ans_data_io_helper.py

classifiers/answer_classifier/ans_data_io_helper.pyc

classifiers/answer_classifier/train_ans_classifier.py

classifiers/region_ranker/perfect_ranker.py

classifiers/region_ranker/perfect_ranker.pyc

classifiers/tf_graph_creation_helper.py

classifiers/tf_graph_creation_helper.pyc