Adding a new synapse type

Currently, the Kaspersky Neuromorphic Platform supports the property sets and projection typification based on the synapse models DeltaSynapse, AdditiveSTDPDeltaSynapse, and SynapticResourceSTDPDeltaSynapse. If required, you can add a new synapse type.

You can use this instruction when working with the platform source code.

To add a new synapse type:

1. Go from the working directory where the platform source code archive was unpacked to synapse-traits-library/include/knp/synapse-traits/, and create a header file for the new synapse type.
2. In the created header file, define the synapse type structure and its template properties (for example, default_values, synapse_parameters).

   An example of a delta synapse definition:

   synapse-traits-library/include/knp/synapse-traits/delta.h

   #include "type_traits.h"

   namespace knp::synapse_traits

   {

   struct DeltaSynapse;

   template <>

   struct default_values<DeltaSynapse>

   {

   // Specifies the default synapse weight.

   constexpr static float weight_ = 0.0F;

   // Specifies the default synapse delay.

   constexpr static uint32_t delay_ = 1;

   // Specifies the default synapse type.

   constexpr static OutputType output_type_ = OutputType::EXCITATORY;

   };

   template <>

   struct synapse_parameters<DeltaSynapse>

   {

   // Specifies the synapse attributes.

   synapse_parameters() : weight_(0.0F), delay_(1), output_type_(knp::synapse_traits::OutputType::EXCITATORY) {}

   synapse_parameters(float weight, uint32_t delay, knp::synapse_traits::OutputType type)

   : weight_(weight), delay_(delay), output_type_(type)

   // Synapse weight.

   float weight_;

   // Synapse delay.

   std::size_t delay_;

   // Output synapse type.

   knp::synapse_traits::OutputType output_type_;

   };

   } // namespace knp::synapse_traits

3. Add the created synapse type to the list of synapses defined in the synapse-traits-library/include/knp/synapse-traits/all_traits.h header file.

   An example of adding a delta synapse to the list of synapses:

   synapse-traits-library/include/knp/synapse-traits/all_traits.h

   #include "delta.h"

   namespace knp::synapse_traits

   {

   // A comma-separated list of synapse types.

   #define ALL_SYNAPSES DeltaSynapse

   // ...

   } // namespace knp::neuron_traits

4. Implement the overloading startup method in the desired backends.

   For example, for the CPU backend, implement the overloading method for starting the calculation of projections.

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