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Author SHA1 Message Date
Dayuan Jiang
ee40d37098
add bm25 module (#7779) 
- Description: Add a BM25 Retriever that do not need Elastic search
- Dependencies: rank_bm25(if it is not installed it will be install by
using pip, just like TFIDFRetriever do)
  - Tag maintainer: @rlancemartin, @eyurtsev
  - Twitter handle: DayuanJian21687

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Co-authored-by: Bagatur <baskaryan@gmail.com>
 2023-07-17 07:30:17 -07:00