On the approximation of the step function by some sigmoid functions.
Anton I. IlievNikolay KyurkchievS. MarkovPublished in: Math. Comput. Simul. (2017)
Keyphrases
- continuous functions
- transfer function
- target function
- convex functions
- post processing
- smooth functions
- linear functions
- piecewise linear
- activation function
- multi valued
- approximation algorithms
- approximation error
- logistic regression
- filled function method
- pointwise
- piecewise constant
- error bounds
- image enhancement
- stationary points
- linear approximation
- aggregation functions
- learning algorithm