名词短语
中文翻译：相对频率方法自动索引
同义词：
['Relative Frequency Approach', 'Automatic Indexing Method', 'Relative Frequency Approach forAutomatic Indexing']
例句：
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1. The relative frequency approach has been shown to be effective in improving the accuracy of classification tasks.
相对频率方法已被证明在提高分类任务的准确性方面是有效的。
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2. The automatic indexing method is designed to quickly and accurately categorize large amounts ofdata.
自动索引方法旨在快速而准确地对大量数据进行分类。
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3. In this study, we applied the relative frequency approach to automatically index the text data.
在本研究中，我们应用相对频率方法来自动索引文本数据。