dada81
commented
2 years ago Hi @mortenbouvet
Thanks for writing.
Looking at your code I have my suspicions. FuzzyMatch and WildcardMatch could easily give you more results (and some unexpected/unwanted) specially with multiple terms i.e. lett melk instead of merely lettmelk.
But for me to easily understand what the reason for these results are it would be great if you capture the JSON payload of the request done against the _search API endpoint. You should be able to accomplish this with Fiddler filtering for URLS with /_search or if you have the index name and a timestamp I could pull it from our logs.
Please give me some results you want to see and some that you see but don't expect.
Also I think it would suffice with a one directional synonym lett melk -> lettmelk I assume it's not two terms in your data or do you want to get hits for milk and lett when you search for lettmelk as well?
mortenbouvet
Not sure if this is a bug/feature or us not understanding of how UsingSynonymsImproved() is supposed to work.
Describe the bug/Issue Searches with multi word synonyms produces an unexpected result when using UsingSynonymsImproved(). Usually it returns too many hits and hits that are not relevant compared to manually searching the two phrases/terms without adding synonyms
Our search code query = query.For(searchTerm, q => { q.Query = searchTerm; }) .WithAndAsDefaultOperator() .InField(x => x.ItemName) .AndInField(x => x.Code) .AndInField(x => x.MainCategoryName) .AndInField(x => x.SearchWords) .AndInField(x => x.PaidSearchWords) .AndInField(x => x.ItemPc1VendorsitemId) .AndInField(x => x.ItemTradeMarkName) .MinimumShouldMatch("2") .UsingSynonymsImproved(TimeSpan.Zero) .UsingRelevanceImproved(x => x.ItemName) .FuzzyMatch(x => x.ItemName) .WildcardMatch(x => x.ItemName);
Actual vs Expected Behavior A typical example would be searches for the phrases «lett melk» and «lettmelk». Searching these two terms individually will return 30 products (13 + 17). If we add a bidirectional synonym using the phrase «lett melk» and «lettmelk» as a synonym, we expect the result to return all 30 products regardless of what term is used. However searching for the term «lett melk» returns 187 products and the term «lettmelk» returns 17 products.
Using the standard UsingSynonyms() somewhat resolves this issue, however the standard UsingSynonyms() is unreliable with multi word phrases/synonyms and will sometimes cause the search to return an empty result
Additional information: Episerver.Find 13.4.8.0 Episerver.Labs.Find.Toolbox 1,3,1