kernel-sigmoid

[![NPM version][npm-image]][npm-url]
[![build status][travis-image]][travis-url]
[![npm download][download-image]][download-url]

Sigmoid (hyperbolic tangent) kernel.
See http://crsouza.com/2010/03/kernel-functions-for-machine-learning-applications/#sigmoid

Installation

npm i ml-kernel-sigmoid

Usage

$3

Options:

- alpha - value for the alpha factor (default: 0.01)
- constant - value for the constant (default: -Math.E)

$3

Returns the dot product between x and y in feature space.

License

MIT

[npm-image]: https://img.shields.io/npm/v/ml-kernel-sigmoid.svg?style=flat-square
[npm-url]: https://npmjs.org/package/ml-kernel-sigmoid
[travis-image]: https://img.shields.io/travis/mljs/kernel-sigmoid/master.svg?style=flat-square
[travis-url]: https://travis-ci.org/mljs/kernel-sigmoid
[download-image]: https://img.shields.io/npm/dm/ml-kernel-sigmoid.svg?style=flat-square
[download-url]: https://npmjs.org/package/ml-kernel-sigmoid