ExampleSet exampleSet = exampleSetInput.getData();
IEntityMapping user_mapping=new EntityMapping();
IEntityMapping item_mapping=new EntityMapping();
IRatings training_data=new Ratings();
if (exampleSet.getAttributes().getSpecial("user identification") == null) {
throw new UserError(this,105);
}
if (exampleSet.getAttributes().getSpecial("item identification") == null) {
throw new UserError(this, 105);
}
if (exampleSet.getAttributes().getLabel() == null) {
throw new UserError(this, 105);
}
Attributes Att = exampleSet.getAttributes();
AttributeRole ur=Att.getRole("user identification");
Attribute u=ur.getAttribute();
AttributeRole ir=Att.getRole("item identification");
Attribute i=ir.getAttribute();
Attribute ui=Att.getLabel();
for (Example example : exampleSet) {
double j=example.getValue(u);
int uid=user_mapping.ToInternalID((int) j);
j=example.getValue(i);
int iid=item_mapping.ToInternalID((int) j);
double r=example.getValue(ui);
training_data.Add(uid, iid, r);
}
UserItemBaseline recommendAlg=new UserItemBaseline();