Proximity Search

Run the positional indexer using

python3 PositionalIndex.py

make sure that the dataset is in the same directory
Next run the proximity search script

python3 ProximitySearch.py

this will automatically try to locate positional-index.json in the same directory.
Queries of the form

keyword1\num2\keyword2\num2\keyword3  

supported
For example

times\1\square

Biword Search

Although positional index allows for biword searches, a separate biword index has been created. Run

python3 BiwordIndex.py

then

python3 query_parser.py

queries with multiple AND/OR and phrases with utmost 2 words are supported.