per_class = {'extends': (0.5467625899280576, 0.46060606060606063, 0.5000000000000001, None), 'background': (0.8582089552238806, 0.7427341227125942, 0.7963069821119446, None), 'similarities': (0.6908212560386473, 0.4440993788819876, 0.5406427221172022, None), 'future_work': (0.0, 0.0, 0.0, None), 'differences': (0.7910447761194029, 0.7571428571428571, 0.7737226277372262, None), 'motivation': (0.6312056737588653, 0.4810810810810811, 0.5460122699386503, None), 'uses': (0.7458432304038005, 0.7919293820933165, 0.7681957186544343, None)}
strict = 0.6313853698406212
weak = 0.7829995913363302