Fix the function add_sentence_table second times

Add threshold_num and threshold_rate in the function "add_sentence_table", and using the (new_start new_end) for postprocess index

code/prediction.py

@@ -81,12 +81,12 @@ def add_sentence_table(result, pattern =":；。，？!～！： ", threshold_nu
       end = boundary
       new_start = start
       new_end = end
+      predict_num = 0
       for i, predict_char in enumerate(sample["predict_span_table"][start:end]):
         if predict_char!=0:
-          prrdict_num+=1     
-      prrdict_num = sum(sample["predict_span_table"][start:end])
+          predict_num+=1
       sentence_num = len(sample["predict_span_table"][start:end])
-      if(prrdict_num > threshold_num) or (prrdict_num > sentence_num*threshold_rate):
+      if(predict_num > threshold_num) or (predict_num > sentence_num*threshold_rate):
         
         while(sample["predict_span_table"][new_start]==0): new_start+=1
         while(sample["predict_span_table"][new_end-1]==0): new_end-=1