Update operators.py

hpvm/projects/onnx/frontend/operators.py

@@ -2,9 +2,9 @@ from .ir import DFGNode, ActivationNode, LogicalOpNode
 
 class AddNode(DFGNode):
     pass
-class MatMul(DFGNode):
+class MatMulNode(DFGNode):
     pass
-class SoftMax(DFGNode):
+class SoftMaxNode(DFGNode):
     pass
 class Conv2DNode(DFGNode):
     def __init__(self, layer):