Add support for solr spell checking ("Did you mean?")

[bicolino34]

Currently, search is too strict with letters. Compare Безпека життєдіяльності and Безпека життєдіяльност. With just one letter missing ( і ) there are no results. This possibly can be solved by solr spell checking feature https://solr.apache.org/guide/8_11/spell-checking.html

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@cdrini

[kushalShukla-web]

Hey can I work on this

[tfmorris]

While the "Did you mean" spellcheck feature may be valuable in certain cases, I think for the stated use case using fuzzy search with an edit distance would be a better solution.

https://solr.apache.org/guide/8_11/the-standard-query-parser.html#fuzzy-searches

And, I'd consider this more a bug fix than a feature request. All modern search implementations handle this case with ease.

[benbdeitch]

Hello! I've worked on a few other Solr issues, and I'd love to give this one a shot, if you'd assign me to the task. Is the plan to go for the 'fuzzy search' approach, to leverage Solr's spell-checker, or both?

[cdrini]

There's a bit of research/experimenting here, I reckon. Thinking/experimenting with strategies for both might be the way to go!

As a note here are the updated docs links:

• https://solr.apache.org/guide/solr/latest/query-guide/spell-checking.html
• https://solr.apache.org/guide/solr/latest/query-guide/standard-query-parser.html#fuzzy-searches

It might also be worth looking at some books to see if there are any strategies for this. I've had success with the O'Reilly books on solr in the past. Note that my public library gives me free access to the O'Reilly catalogue, so maybe check it that's the case for you!