| Name | Description | Type | Package | Framework |
| ActivationBiPolar | BiPolar activation function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationBipolarSteepenedSigmoid | The bipolar sigmoid activation function is like the regular sigmoid activation function, except Bipolar sigmoid activation function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationClippedLinear | Linear activation function that bounds the output to [-1,+1]. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationCompetitive | An activation function that only allows a specified number, usually one, of the out-bound connection to win. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationElliott | Computationally efficient alternative to ActivationSigmoid. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationElliottSymmetric | Computationally efficient alternative to ActivationTANH. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationFunction | This interface allows various activation functions to be used with the neural network. | Interface | org.encog.engine.network.activation | HeatonReasearch |
| ActivationGaussian | An activation function based on the Gaussian function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationLinear | The Linear layer is really not an activation function at all. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationLOG | An activation function based on the logarithm function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationRamp | A ramp activation function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationSigmoid | The sigmoid activation function takes on a sigmoidal shape. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationSIN | An activation function based on the sin function, with a double period. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationSoftMax | The softmax activation function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationSteepenedSigmoid | The Steepened Sigmoid is an activation function typically used with NEAT. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationStep | The step activation function is a very simple activation function. | Class | org.encog.engine.network.activation | HeatonReasearch |
| ActivationTANH | The hyperbolic tangent activation function takes the curved shape of the hyperbolic tangent. | Class | org.encog.engine.network.activation | HeatonReasearch |