| 摘要 |
Systems, methods, and programs embodied in a computer readable medium are provided for index extraction. An extraction of a plurality of sets of indices from a document in a server is implemented using a plurality of indexing entities. Each set of indices is extracted using a corresponding one of the indexing entities. Attempts are made to obtain a composite set of indices from the sets of indices extracted. The composite set of indices is associated with the document if the composite set of indices is successfully obtained from the sets of indices.
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