implemented loo crossvalidation

2 files changed, 4 insertions, 1 deletions

diff --git a/lib/feature_util.rb b/lib/feature_util.rb
index 286c05e..e412416 100644
--- a/lib/feature_util.rb
+++ b/lib/feature_util.rb
@@ -52,7 +52,8 @@ module Lib
             end
           end
         end
-        raise "could not estimate predicted variable" unless predicted_variable
+        raise "could not estimate predicted variable, model: '"+model.uri.to_s+"', prediction_dataset: '"+
+          prediction_dataset_uri.to_s+"'" unless predicted_variable
       end
       
       {:predicted_variable => predicted_variable, :predicted_confidence => predicted_confidence}
diff --git a/lib/validation_db.rb b/lib/validation_db.rb
index e2595c5..c38b82e 100755
--- a/lib/validation_db.rb
+++ b/lib/validation_db.rb
@@ -136,6 +136,7 @@ module Validation
     attribute :random_seed
     attribute :finished
     attribute :stratified
+    attribute :loo
     
     attr_accessor :subjectid
     
@@ -145,6 +146,7 @@ module Validation
     index :random_seed
     index :stratified
     index :finished
+    index :loo
 
     def self.create(params={})
       params[:date] = Time.new