add simple comment

@@ -25,6 +25,8 @@ if __name__ == '__main__':
         video_id = row[0]
         video_vector = np.zeros(100)
         for segment_index in range(1, 6):
+            #get tag and weight from here
+            #use weight as input of non-linear function before this step
             tag, weight = row[segment_index].split(":")
             if tag in tag_vectors.vocab:
                 video_vector = video_vector + (tag_vectors[tag] * float(weight))