History

Viktor Lofgren 1e4157017d More helpful descriptions of index queries.		2023-04-02 12:03:58 +02:00
..
src	More helpful descriptions of index queries.	2023-04-02 12:03:58 +02:00
build.gradle	The refactoring will continue until morale improves.	2023-03-12 10:50:31 +01:00
readme.md	Update readme.md	2023-03-22 17:09:48 +01:00

readme.md

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.