Figure 5
From: Computing Mathematical Functions using DNA via Fractional Coding

Molecular Perceptron. (a) A standard perceptron that computes sigmoid \(({\sum }_{i=1}^{N}{w}_{i}{x}_{i})\), (b) A molecular perceptron that computes sigmoid \((\frac{1}{N}{\sum }_{i\mathrm{=1}}^{N}{w}_{i}{x}_{i})\).