Añadido algo para cambiar el tipo del Label

testML/DictionaryToObjectConverter.cs

@@ -16,7 +16,7 @@ namespace testML
 {
 	public static class DictionaryToObjectConverter
 	{
-		public static IEnumerable<object> Convert(List<Dictionary<string, object>> data, out Type classType, out DataViewSchema schema)
+		public static IEnumerable<object> Convert(List<Dictionary<string, object>> data, string toPredict, out Type classType, out DataViewSchema schema)
 		{
 			var schemaBuilder = new DataViewSchema.Builder();			
 
@@ -32,6 +32,12 @@ namespace testML
 					if (sampleValue != null)
 					{
 						var keyType = sampleValue.GetType();
+
+						if (key == toPredict)
+						{
+							keyType = typeof(float);
+						}
+
 						definition.Add(key, keyType);
 
 						if (keyType == typeof(string))
@@ -61,6 +67,7 @@ namespace testML
 			var converter = new DictionaryToObjectConverterClass()
 			{
 				ClassName = "OBJ" + Guid.NewGuid().ToString("N").ToUpper(),
+				ToPredict = toPredict,
 				Definition = definition
 			};
 
@@ -99,15 +106,37 @@ namespace testML
 			Type genericType = listType.MakeGenericType(classType);
 
 			var result =(IList) Activator.CreateInstance(genericType) ;
-			
+
+			Dictionary<string, float> translate = new Dictionary<string, float>();
+			translate.Add(string.Empty, 0);
 			foreach (var inputData in data)
+			{
+				if (inputData.ContainsKey(toPredict) && inputData[toPredict] != null)
+				{
+					if (!translate.ContainsKey(inputData[toPredict] as string))
+					{
+						var max = translate.Values.Max()+1;
+						translate.Add(inputData[toPredict] as string, max);
+					}
+				}
+			}
+
+
+				foreach (var inputData in data)
 			{
 				var outputData = (IDictionaryToObjectConverter)Activator.CreateInstance(classType);
 				result.Add(outputData);
 
 				foreach (var key in inputData.Keys)
 				{
-					outputData[key] = inputData[key];
+					if (key == toPredict)
+					{
+						outputData[key] = translate[inputData[key] as string ?? string.Empty];
+					}
+					else
+					{
+						outputData[key] = inputData[key];
+					}
 				}
 			}