Vector Search

Question

Hi there!
I am trying to implement vector search using the dotnet code available on GitHub and I couldn't settle on the difference in the results generated with the change in the case sensitivity of the search query.

Here are my observations:

Query: Who build Kline?

Query: who build Kline?

The first search response is the correct one and the second one is irrelevant.

I am using default analyzer - standard lucene in all my fields. For generating the vector embeddings I am using openAI model (as asked in the code). Please note that this is with reference to simple hybrid search.

It would be highly appreciated if someone can tell me about the best way to neutralize the results! Thanks in advance.