Table 1:
Corresponding and Common Symbols Used in Describing ANNs and Predictive Coding
Models.
| Backpropagation | Predictive Coding | |
|---|---|---|
| Activity of a node (before nonlinearity) |  |  |
| Synaptic weight |  |  |
| Objective function |  |  |
| Prediction error |  |  |
| Activation function |  | |
| Number of neurons in a layer |  | |
| Highest index of a layer |  | |
| Input from the training set |  | |
| Output from the training set |  | |
| Backpropagation | Predictive Coding | |
|---|---|---|
| Activity of a node (before nonlinearity) | | |
| Synaptic weight | | |
| Objective function | | |
| Prediction error | | |
| Activation function | | |
| Number of neurons in a layer | | |
| Highest index of a layer | | |
| Input from the training set | | |
| Output from the training set | | |