• Goal

- Designing an Efficient SNN Learning Algorithm for Vertical Synapse Array Structure

  • - Suggested SNN learning method using knowledge distillation for resource-constrained environment of 3D-CIM
  • - Implementation of an algorithm to reduce the occurrence of spikes for energy efficiency in model inference
  • - Compute capability sensitivity analysis

- Implementation of an artificial neural network inference model that is robust to device noise

  • - SNN model design robust to time-variant noise generated in 3D CIM
  • - To address the noise from high-dimensional data and parameters in artificial neural network training, robust optimization techniques are used
  • - By obtaining observed values that consider the worst-case scenario along with the original values, this approach aims to overcome the limitations of ECOC in neural network training
  • - Analyze and apply model ensemble technology, which is a type of Bayesian model
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Fig 1. System diagram of task performance.
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Fig 2. BNN implementation method with -1/1 as activation variable.
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Fig 3. BWN-based CIM circuit configuration
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Fig 4. Comparison of the accuracy and number of spikes of various neural coding methods when spike deletion (left) and spike jitter (right) noise were applied respectively (VGG16 model, CIFAR-10 dataset).
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Fig 5. Accuracy comparison of various neural coding and proposed weight scaling methods when spike deletion (left) and spike jitter (right) noise are applied respectively (VGG16 model, CIFAR-10 dataset).