in gym_wikinav/envs/wikinav_env/web_graph.py [0:0]
def get_relative_word_overlap(self, article1_idx, article2_idx):
"""
Get the proportion of words in `article1` that are also in `article2`.
"""
article1 = self.articles[article1_idx]
article2 = self.articles[article2_idx]
article1_types = set(article1.text)
if len(article1_types) == 0:
return 0.0
article2_types = set(article2.text)
return len(article1_types & article2_types) / float(len(article1_types))