F1ScoreEvaluator Class

Initialize a f1 score evaluator for calculating F1 score.

Usage

   eval_fn = F1ScoreEvaluator()
   result = eval_fn(
       response="The capital of Japan is Tokyo.",
       ground_truth="Tokyo is Japan's capital, known for its blend of traditional culture                 and technological advancements.")

Output format

   {
       "f1_score": 0.42
   }