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Also refactor along the way. Really needs an additional pass, these tests are very hairy. |
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Reverse Index
The reverse index contains a mapping from word to document id.
There are two tiers of this index.
- A priority index which only indexes terms that are flagged with priority flags1.
- A full index that indexes all terms.
The full index also provides access to term-level metadata, while the priority index is a binary index that only offers information about which documents has a specific word.
[1] See WordFlags in common/model and KeywordMetadata in features-convert/keyword-extraction.
Central Classes
- ReverseIndexFullConverter constructs the full index.
- ReverseIndexFullReader interrogates the full index.
- ReverseIndexPriorityConverter constructs the priority index.
- ReverseIndexPriorityReader interrogates the priority index.