CatgirlIntelligenceAgency/code/features-index/index-reverse

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.