Logistic sigmoid function, useful for neural networks. Returns 1 / (1 + e^(-t))
assert(logisticSigmoid(1000.0) == 1.0); assert(logisticSigmoid(-1000.0) == 0.0); assert(logisticSigmoid(1000) == 1); assert(logisticSigmoid(-1000) == 0);
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Logistic sigmoid function, useful for neural networks. Returns 1 / (1 + e^(-t))