Inconsistent Results

Hi all, I’m having some issues with inconsistent results in Lunr.

Presuming I have 1 object in my store, { label: Assistant }

A search for assist yields one result, however a search for assista yields none. In fact, there’s no result for assistan either, but assistant returns the expected result.

I’ve created a JSFiddle that replicates the issue;

https://jsfiddle.net/mfzx2gq9/1/

There are similar issues with the words Nursing and Accommodation too.

What’s going on? Is this an issue with stemming? If so how can it be resolved?

[hoelzro]

@TomFoyster Since this is part of an autocomplete system, it sounds like you need prefix search, and I would agree with your assessment that lunr probably isn’t a good fit this task. If you don’t need stemming itself (eg. normalizing jumped, jumps, and jumping to jump), you could turn stemming off in the pipeline, and that might give you better results. I find wildcards and stemming kind of create a strange situation, since assistan* won’t match assistant, then, because the latter is stemmed down to assist. If you’re looking for fuzzy searches, you may have better luck with a library like http://fusejs.io - I haven’t used it myself, but it seems to be a more suitable fit. I don’t know how tightly integrated lunr is into your application, though!

[Frexuz]

Borrowing issue I have the same issue. But I can’t quite figure out how to turn off the stemmer? 😃

EDIT: Found it 😃

this.pipeline.remove(lunr.stemmer)
this.searchPipeline.remove(lunr.stemmer)