Predict the neuron where a new observation is classified

# S3 method for somRes
predict(object, = NULL, ..., radius = 0)



a somRes object.

a new observation (optional). Default values is NULL which corresponds to performing prediction on the training dataset.


not used.


current radius used to perform soft affectation (when affectation = "heskes", see initSOM for further details about Heskes' soft affectation). Default value is 0, which corresponds to a hard affectation.


predict.somRes returns the number of the neuron to which the new observation is assigned (i.e., neuron with the closest prototype).

When the algorithm's type is "korresp", must be the original contingency table passed to the algorithm.


The number of columns of the new observations (or its length if only one observation is provided) must match the number of columns of the data set given to the SOM algorithm (see trainSOM).

See also


Jérome Mariette
Madalina Olteanu
Fabrice Rossi
Nathalie Vialaneix


my.som <- trainSOM( = iris[-100, 1:4], dimension = c(5, 5))
predict(my.som, iris[100, 1:4])
#> 2 
#> 2