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                                            Zhijiao

ValueError: a cannot be empty unless no samples are taken

> 您好， > > 我遇到了完全相同的问题，并注意到在 KeyphraseExtractor->extract 方法中，提取的 keyphrases 是一个 keyphrases dicts 列表： > > ``` > [{'keyphrases': ['Black hole', 'Region of spacetime', 'Strong gravity', 'Light and electromagnetic waves', 'Theory...