R: Mining Spatial, Text, Web, and Social Media Data

Neural networks for prediction

The use of neural networks for prediction requires the dependent/target/output variable to be numeric, and all the input/independent/feature variables can be of any type. From the ArtPiece dataset, we are going to predict what is going to be the current auction average price based on all the parameters available. Before applying a neural-network-based model, it is important to preprocess the data, by excluding the missing values and any transformation if required; hence, let's preprocess the data:

library(neuralnet)

art<- read.csv("ArtPiece_1.csv")

str(art)

#data conversion for categorical features

art$Art.Auction.House<-as.factor(art$Art.Auction.House)

art$IsGood.Purchase<-as.factor(art$IsGood.Purchase)