Plugin adds separate configure menu for Lucene search.
Plugin enables store woner following configurations:
Ignore Search Type Set By User - check to enable by default only exact search;
Use Exact Search By Default - if user has not selected the search type, then find products that exactly match the search keywords;
Append Left Side Wildcard For Every Keyword - if exact search is used, then is this setting ignored;
Use Logical OR For Multiple Keywords - when is not selected, local AND is used;
Use Fuzzy Search - if exact search is used, then is this setting ignored;
Fuzzy Search Edit Distance - edit distance (Levenshtein distance) measures how many singl.character operations (insertions, deletions, or substitutions) are needed to transform one string into another);
Use Lucene.NET For Ajax Filters - check to enable for Ajax Filters;
Don't Track Inventory Equals Always In Stock - if inventory method is set to don't track inventory, then product is always considered to be in stock;
Active Backorder Equals Always In Stock - if product backorders are active, then product is always considered to be in stock.
Managing synonyms
Store owner can also manage synonyms files that are used by search engine when using broad search.
This file is used to import to NOP synonym mappings and manage custom synonym mappings.
Plugin enables store owner to:
upload and download synonyms files
delete synonyms files
Search engine utilizes synonyms to broaden search results by considering alternative terms related to the original query.
You can use .txt file format to upload synonyms list.
Add synonyms to the same row, with comma separated (add one search term with it's synonyms on the same row).
See example file below.