Algorithmic-based search. This is best exemplified by Google's automated "page rank" popularity engine that has tremendous power and scale to index vast amounts of unstructured data.

基于算法的搜索：最好的例子就是Google的“Page Rank”算法，使得GOogle的搜索引擎具有非常强大的能力，具备扩展性索引庞大的非结构化数据的能力。

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