graph show the pytorch softmax => how to use Mathematica express it ?

Author: xlisp

relu_graph.png

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+
+(* graph show the  pytorch softmax => how to use Mathematica express it ?  \text{softmax}(x_i) = \frac{e^{x_i}}{\sum_{j} e^{x_j}} *)
+
+softmax[x_List] := Exp[x]/Total[Exp[x]]
+
+
+input = {1.0, 2.0, 3.0, 4.0, 1.0, 2.0, 3.0};
+output = softmax[input]
+
+
+BarChart[output, ChartLabels -> input, 
+ ChartStyle -> Blue, 
+ PlotLabel -> "Softmax Function", 
+ AxesLabel -> {"Input", "Softmax Output"}]
+
+
+(* plot  softmax function *)
+
+Plot[Evaluate[softmax[{x, 2, 3, 4}]], {x, -5, 5},
+ PlotLegends -> {"softmax[{x, 2, 3, 4}]"},
+ PlotRange -> All, AxesLabel -> {"x", "softmax output"}, 
+ PlotLabel -> "Softmax Function"]
+
+
+Plot3D[Evaluate[softmax[{x, y, 2}][[1]]], {x, -5, 5}, {y, -5, 5},
+ PlotRange -> All, AxesLabel -> {"x", "y", "softmax output"}, 
+ PlotLabel -> "Softmax Function"]
+