diff --git a/Experimentation/OfflineTrainer.cs b/Experimentation/OfflineTrainer.cs
index 71a4dc8e..43795041 100644
--- a/Experimentation/OfflineTrainer.cs
+++ b/Experimentation/OfflineTrainer.cs
@@ -92,10 +92,10 @@ namespace Experimentation
                                 });
                             }
 
-                            // var pred = vw.Learn(line, VowpalWabbitPredictionType.ActionScore);
+                            // var pred = vw.Learn(line, VowpalWabbitPredictionType.ActionProbabilities);
                             using (var example = jsonSerializer.ParseAndCreate(line))
                             {
-                                var pred = example.Learn(VowpalWabbitPredictionType.ActionScore);
+                                var pred = example.Learn(VowpalWabbitPredictionType.ActionProbabilities);
 
                                 prediction.WriteLine(JsonConvert.SerializeObject(
                                     new
@@ -160,7 +160,7 @@ namespace Experimentation
             //    var learnBlock = new TransformBlock<Event, Event>(
             //        evt =>
             //        {
-            //            evt.Prediction = evt.Example.Learn(VowpalWabbitPredictionType.ActionScore);
+            //            evt.Prediction = evt.Example.Learn(VowpalWabbitPredictionType.ActionProbabilities);
             //            evt.Example.Dispose();
             //            return evt;
             //        },
diff --git a/client/ClientDecisionServiceTest/VWTest.cs b/client/ClientDecisionServiceTest/VWTest.cs
index 4aaa813f..88a74375 100644
--- a/client/ClientDecisionServiceTest/VWTest.cs
+++ b/client/ClientDecisionServiceTest/VWTest.cs
@@ -87,7 +87,7 @@ namespace ClientDecisionServiceTest
                         DateTime timeStamp = DateTime.UtcNow;
 
                         var context = new FoodContext { Actions = new int[] { 1, 2, 3 }, UserLocation = location };
-                        ActionScore[] predicts = vw.Predict(context, VowpalWabbitPredictionType.ActionScore);
+                        ActionScore[] predicts = vw.Predict(context, VowpalWabbitPredictionType.ActionProbabilities);
                         Assert.AreEqual(expectedActions[location], predicts[0].Action + 1);
                     }
                 }
diff --git a/client/ClientDecisionServiceVowpalWabbit/VWExplorer.cs b/client/ClientDecisionServiceVowpalWabbit/VWExplorer.cs
index fc5930c0..2925666c 100644
--- a/client/ClientDecisionServiceVowpalWabbit/VWExplorer.cs
+++ b/client/ClientDecisionServiceVowpalWabbit/VWExplorer.cs
@@ -50,7 +50,7 @@ namespace Microsoft.Research.MultiWorldTesting.ClientLibrary
                 }
             }
 
-            var vwPredictions = vw.Predict(context, VowpalWabbitPredictionType.ActionScore);
+            var vwPredictions = vw.Predict(context, VowpalWabbitPredictionType.ActionProbabilities);
 
             // VW multi-label predictions are 0-based
             var ap = vwPredictions