topic K Nearest Neighbor: Making a Prediction for New Record in Discussions

K Nearest Neighbor: Making a Prediction for New Record

drvijay — Wed, 22 Jan 2020 01:03:02 GMT

Hi! I've run k-nn and saved prediction formulas for my dataset. Now I am trying to make predictions for a number of new records and can't seem to recall how to do this (I have done this before but it's been several months).

Any help on this would be much appreciated! Thanks in advance for your suggestions/tips!

Re: K Nearest Neighbor: Making a Prediction for New Record

txnelson — Wed, 22 Jan 2020 04:01:21 GMT

Just add the new values as new rows to the data table, and the prediction formulas will provide the answer

Re: K Nearest Neighbor: Making a Prediction for New Record

drvijay — Wed, 22 Jan 2020 05:28:27 GMT

Thanks much for your reply. This is exactly what I had planned to do (and
what I thought I had done before) but it doesn't work for some reason.
What I figured out was that I had to add the records BEFORE running the
algorithm and saving the prediction formula - this does seem to work.