Index and query text documents

Demonstrates advanced queries in a large document collection. First an index is created on the document collection. Once the index has been created it can be queried using a powerful query language. The query syntax bases on the Lucene query syntax and supports among others phrase queries, wildcard queries, fuzzy queries, proximity queries, range queries, term boosting, grouping and boolean operators.

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How can I see the Authors in file? How can I extract it?

Thank You.