Research Article
FPGA-Based Stochastic Echo State Networks for Time-Series Forecasting
Table 1
Spent hardware resources of the medium-sized Cyclone IV (EP4CE115F297C7N) FPGA for the 20-unit and 50-unit reservoir networks.
| | Implementation approach | Stochastic | Conventional | | Reservoir size | 20 neurons | 50 neurons | 20 neurons | 50 neurons |
| | Total logic elements (LEs) | 2186 (1.9%) | 5306 (4.6%) | 9013 (7.9%) | 19975 (17.4%) | | Combinational functions | 2149 (1.9%) | 5251 (4.6%) | 9013 (7.9%) | 19975 (17.4%) | | Dedicated logic registers | 858 (0.7%) | 2054 (1.8%) | 320 (0.3%) | 800 (0.7%) |
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