Can the number of Predictors be different for Train and Test data?

1 visualizzazione (ultimi 30 giorni)
Can my train data have 6 predictors while test data have only 4?
The 4 predictors in my test data are the same as in my train data, just that 2 extra predictors of the train might not be present in my test data.
It's basic question, but I'm a bit confused. Any suggestion would be helpful thank you.
  2 Commenti
Adam Danz
Adam Danz il 3 Lug 2019
Modificato: Adam Danz il 3 Lug 2019
Are you doing cross validation? Are you training a neural network? Generally the training and testing data are subsets of the same dataset.
abhisrisai
abhisrisai il 3 Lug 2019
@Adam Danz
Hi,
I'm using the fitcknn methodology. For now, I'm not using NN. Regarding my dataset, My training data is a different table and my test data is a different table. In other words, 2 different .csv files.

Accedi per commentare.

Risposta accettata

Sai Bhargav Avula
Sai Bhargav Avula il 17 Lug 2019
No, You can not have different number of predictors for the train and test data. The model you have trained would require all the predictor that is trained on for an accurate prediction.

Più risposte (1)

Greg Heath
Greg Heath il 18 Lug 2019
Of course not. The ultimate purpose of training is to create a model that works well on non-training data.
Thank you for formally accepting my answer
Greg

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by