我有一个包含300个元素的列表，分为：
total knee arthroplasty ......... 200 elements
minimally invasive total knee arthroplasty ..........50 elements
total knee arthroplasty visionaire .........15 elements
knee arthroscopy partial medial meniscectomy ..........10 elements
medial unicompartmental knee arthroplasty .........10 elements
total knee arthroplasty direct anterior approach.........10 elements
knee manipulation under anesthetic .........5 elements
我想做的是：
I want to write a model in Python (in my opinion a Neural Network) such
that I want to train the model in a way by assigning a random number for
each of these categories, so that in future if I get any of these
statements or a similar statement, my model would be able to assign a
the closest random number to it.