I changed similarity measure for retrieving documents. The documentation says I need to rebuild the index. Is rebuilding the index equivalent to rerunning the elasticsearch in /bin ?
Actually, I tried rerun the elasticsearch, it does change the retrieval document results. Don't know if it is the right way.
You need to delete the data from ES and then index it again.
I changed the elasticsearch.yml file, and added index.similairty.default.type: BM25, and rerun the elasticsearch executable file. Is it the right way to change similarity measure?
My data are very big, I don't want to re index the data.