All done in python

For the steps in the functions that ask for the filename, put a place holder there for where you would put the file

2. Make sure you have the package installed and imported without errors. pip install rank_bm25 from rank_bm25 import BM250kapi 3. Implement two major functions: index_by_BM25(file_directory) and lookup_query_BM25(query, K, indices) " K " means return top K documents according to scores. You should have a main function to test those two functions with small amount of data. After there is no bug, you can process all documents and play with queries