chemical,min_df,max_df,alpha,beta,k_range,k_final,random_seed,tokens_in_bow,unigrams_in_bow,bigrams_in_bow ammonia,42,1,0.067,0.133,18-32,29,8045,6740,3488,3252 methanol,36,1,0.028,0.022,25-34,30,5994,5575,3267,2595 olefins,39,1,0.07,0.315,22-28,26,2735,9302,4476,5027 aromatics,43,1,0.041,0.26,27-39,35,4565,6832,3716,3057