Efficient hardware implementation of threshold neural networks
Bibliographic record
Abstract
Area and Noise to Signal Ratio (NSR) are two main factors in hardware implementation of neural networks. Despite attempts to reduce the area of sigmoid and hyperbolic tangent activation functions, they cannot achieve the efficiency of threshold activation function. A new NSR efficient architecture for threshold networks is proposed in this paper. The proposed architecture uses different number of bits for weight storage in different layers. The optimum number of bits for each layer is found based on the mathematical derivation using stochastic model. Network training is done using the recently introduced learning algorithm called Extreme Learning Machine (ELM). A 4-7-4 network is considered as a case study and its hardware implementation for different weight accuracies is investigated. The proposed design is more efficient considering area × NSR as a performance metric. VLSI implementation of the proposed architecture using a 0.18 μm CMOS process is presented which shows 44.16%, 58.04 % and 67.30% improvement for total number of bits equal to 16, 20 and 24.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".