fuzzy

Esiur.Analysis/Fuzzy/OperationSet.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+
+namespace Esiur.Analysis.Fuzzy
+{
+    public enum Operation
+    {
+        Intersection,
+        Union
+    }
+
+    public class OperationSet : INumericalSet<double>
+    {
+
+        public Operation Operation { get; set; }
+
+        public INumericalSet<double>[] Sets { get; internal set; }
+
+        public double AlphaCut { get; set; }
+
+        public double this[double index]
+        {
+            get
+            {
+                double x = 0;
+                if (Operation == Operation.Union)
+                    x = Sets.Max(x => x[index]);
+                else if (Operation == Operation.Intersection)
+                    x = Sets.Min(x => x[index]);
+
+                // Alpha might be changed for this instance
+                return x < AlphaCut ? 0 : x;
+            }
+        }
+
+        public OperationSet(Operation operation, params INumericalSet<double>[] sets)
+        {
+            Sets = sets;
+
+            if (operation == Operation.Intersection)
+                AlphaCut = sets.Min(x => x.AlphaCut);
+            else if (Operation == Operation.Union)
+                AlphaCut = sets.Max(x => x.AlphaCut);
+
+            Operation = operation;
+        }
+
+        public INumericalSet<double> Intersection(INumericalSet<double> with)
+        {
+            return new OperationSet(Operation.Intersection, new INumericalSet<double>[] { this, with });
+        }
+
+        public INumericalSet<double> Union(INumericalSet<double> with)
+        {
+            return new OperationSet(Operation.Union, new INumericalSet<double>[] { this, with });
+        }
+    }
+}