David Blei, of Princeton University, has therefore been trying to teach machines to do the job.

因此，普林斯顿大学的戴维·布莱试图通过机器来完成这项工作。

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Blei says that such an approach could be added to search engines' ranking algorithms to identify important documents, and it could help users navigate vast collections of information more easily.

Blei说这种方法可以帮助搜索引擎的排序算法识别重要的文档，同时指导用户更容易地收集大量信息。

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