Provide a Solr module for dynamic metadata extraction/indexing with Apache UIMA
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Key: SOLR-2129
URL: https://issues.apache.org/jira/browse/SOLR-2129
Project: Solr
Issue Type: New Feature
Reporter: Tommaso Teofili
Provide components to enable Apache UIMA automatic metadata extraction to be
exploited when indexing documents.
The purpose of this is to get unstructured information "inside" a document and
create structured metadata (as fields) to enrich each document.
Basically this can be done with a custom UpdateRequestProcessor which triggers
UIMA while indexing documents.
The basic UIMA implementation of UpdateRequestProcessor extracts sentences
(with a tokenizer and an hidden Markov model tagger), named entities, language,
suggested category, keywords and concepts (exploiting external services from
OpenCalais and AlchemyAPI). Such an implementation can be easily extended
adding or selecting different UIMA analysis engines, both from UIMA
repositories on the web or creating new ones from scratch.
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