Modeling a stress signal.

Highlights: [•] Proposed a computational stress signal predictor system to estimate a stress signal. [•] System based on support vector machine, genetic algorithm and neural network. [•] An experiment was conducted to acquire real-world stress data. [•] Features extracted from the stress data were provided as input to the system. [•] The stress signal was most similar to a hyperbolic tangent curve. [Copyright &y& Elsevier]