Versions (relevant - OpenSearch/Dashboard/Server OS/Browser): 2.17
Describe the issue:
The hybrid search query returns significantly different results for searches which are semantically identical.
Configuration:
Relevant Logs or Screenshots:
Using hybrid query on OpenSearch with knn_weight == 0.7 and bm25_weight=0.3 leads to different search results. I show different references with a, b, c, d, e.
query: Why is the sky blue
results: [a, b]
query: why is the sky blue?
results: [c]
query: Why the sky is blue
results: [b, e]
query: why the sky is blue?
results: [c]
query: What is the reason that the sky is blue?
results: [b, f]