Changeset 17964 for trunk/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Interpreter/IntervalArithBoundsEstimator.cs

Timestamp:

04/27/21 10:40:49 (3 years ago)

Author:

chaider

Message:

#3073 Added sample on start page and default problem in shape constrained regression problem data

File:

• trunk/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Interpreter/IntervalArithBoundsEstimator.cs (modified) (2 diffs)

trunk/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Interpreter/IntervalArithBoundsEstimator.cs

@@ -223 +223 @@
             break;
           }
+        case OpCodes.Power: {
+          var a = Evaluate(instructions, ref instructionCounter, nodeIntervals, variableIntervals);
+          var b = Evaluate(instructions, ref instructionCounter, nodeIntervals, variableIntervals);
+          // support only integer powers
+          if (b.LowerBound == b.UpperBound && Math.Truncate(b.LowerBound) == b.LowerBound) {
+            result = Interval.Power(a, (int)b.LowerBound);
+          } else {
+            throw new NotSupportedException("Interval is only supported for integer powers");
+          }
+          break;
+        }
         case OpCodes.Absolute: {
             var argumentInterval = Evaluate(instructions, ref instructionCounter, nodeIntervals, variableIntervals);
@@ -329 +340 @@
           !(n.Symbol is Cube) &&
           !(n.Symbol is CubeRoot) &&
+          !(n.Symbol is Power) &&
           !(n.Symbol is Absolute) &&
           !(n.Symbol is AnalyticQuotient)