Script Execution Order (with argument list)
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(1) python create_tfidf.py <input_path> <feature>
	Generates .tfidf files
(2) python generate_rep.py <input_path> <feature>
	Generates .rep files
(3) python calculate_cosine.py <input_path> <feature>
	Generates .feature files
(4) python generate_feature_vec.py <input_path> <list_of_features_separated_by_space>
	Generates .arff files

Possible features:
50_50
0_50
50_0
25_25
25_0
0_25
10_10
0_10
10_0
Between_Placeholders
abstract
common_authors
papers_published_best
papers_published_next_best
paper_year