Detailed Instructions: In this task, you are given a part of an article. Your task is to generate headline (title) for this text. Preferred headlines are under fifteen words.
Q: We introduce Discriminative BLEU (BLEU), a novel metric for intrinsic evaluation of generated text in tasks that admit a diverse range of possible outputs. Reference strings are scored for quality by human raters on a scale of [1, +1] to weight multi-reference BLEU. In tasks involving generation of conversational responses, BLEU correlates reasonably with human judgments and outperforms sentence-level and IBM BLEU in terms of both Spearman's and Kendall's .
A:
BLEU: A Discriminative Metric for Generation Tasks with Intrinsically Diverse Targets