Added SimilarityMethodsEnum

src/Server/SimilarityMethods.cs

@@ -21,20 +21,28 @@ public class SimilarityMethod
     }
 }
 
+public enum SimilarityMethodEnum
+{
+    Cosine,
+    Euclidian,
+    Manhattan,
+    Pearson
+}
+
 public static class SimilarityMethods
 {
     public delegate float similarityMethodProtoDelegate(float[] vector1, float[] vector2);
     public delegate float similarityMethodDelegate(float[] vector1, float[] vector2);
-    public static readonly Dictionary<string, similarityMethodProtoDelegate> probMethods;
+    public static readonly Dictionary<SimilarityMethodEnum, similarityMethodProtoDelegate> probMethods;
 
     static SimilarityMethods()
     {
-        probMethods = new Dictionary<string, similarityMethodProtoDelegate>
+        probMethods = new Dictionary<SimilarityMethodEnum, similarityMethodProtoDelegate>
         {
-            ["Cosine"] = CosineSimilarity,
+            [SimilarityMethodEnum.Cosine] = CosineSimilarity,
-            ["Euclidian"] = EuclidianDistance,
+            [SimilarityMethodEnum.Euclidian] = EuclidianDistance,
-            ["Manhattan"] = ManhattanDistance,
+            [SimilarityMethodEnum.Manhattan] = ManhattanDistance,
-            ["Pearson"] = PearsonCorrelation
+            [SimilarityMethodEnum.Pearson] = PearsonCorrelation
         };
     }
 
@@ -42,7 +50,12 @@ public static class SimilarityMethods
     {
         string methodName = name;
 
-        if (!probMethods.TryGetValue(methodName, out similarityMethodProtoDelegate? method))
+        SimilarityMethodEnum probMethodEnum = (SimilarityMethodEnum)Enum.Parse(
+            typeof(SimilarityMethodEnum),
+            methodName
+        );
+
+        if (!probMethods.TryGetValue(probMethodEnum, out similarityMethodProtoDelegate? method))
         {
             return null;
         }