The kneed library has a dependency and we need to install them as well in order to work:

numpy==1.18

scipy==1.1.0

scikit-learn==0.21.3

Once we install the above libraries using GUI, we can run the below command to check the installed library with the correct version:

%sh
/databricks/python3/bin/pip3 list

Since the DBR 5.5 has both python version ie python2 and python3, hence we need to use the above command.

Please use the specific versions only.