fix error msg

1 files changed, 1 insertions, 1 deletions

diff --git a/validation/validation_service.rb b/validation/validation_service.rb
index 5756913..0651622 100755
--- a/validation/validation_service.rb
+++ b/validation/validation_service.rb
@@ -222,7 +222,7 @@ module Validation
       algorithm_uri = self.algorithm_uri ? nil : model.metadata[OT.algorithm]
       predicted_variable = model.predicted_variable(self.subjectid)
       predicted_confidence = model.predicted_confidence(self.subjectid)
-      raise "cannot determine whether model '"+model.uri.to-s+"' performs classification or regression, "+
+      raise "cannot determine whether model '"+model.uri.to_s+"' performs classification or regression, "+
           "please set rdf-type of predictedVariables feature '"+predicted_variable.to_s+
           "' to NominalFeature or NumericFeature" if (feature_type.to_s!="classification" and feature_type.to_s!="regression")        
       compute_validation_stats( feature_type, predicted_variable, predicted_confidence,