How can I perform a classification with a custom function?

6 次查看（过去 30 天）
Sannsch
Sannsch 2013-8-28
I plotted two data sets on a two-dimensional space. Imagine a scatterplot with points that can either be 'x' or 'o'.
I want to compute and draw a decision function, which is given except for one parameter b, simplified: y = ln(b * exp(-6x+7) -b)/10 The decision function with the ideal b should divide the scatterplot into 'x' and 'o' points and minimize the error.
As a start I read this: http://www.mathworks.co.uk/products/statistics/examples.html?file=/products/demos/shipping/stats/classdemo.html
As my function is neither linear nor quadratic I would like to know how I can use my custom ln function.

请先登录，再回答此问题。

采纳的回答

Sannsch
Sannsch 2013-8-28
Thank you for the tip. I decided to have another look at the constraints and to express them as a minimax problem. Once I have the optimal b I have the resulting function and can just draw it.

更多回答（1 个）

Image Analyst
Image Analyst 2013-8-28
How about using SVM?
See diagram on: http://en.wikipedia.org/wiki/Support_vector_machine

类别

在 Help Center 和 File Exchange 中查找有关 Design of Experiments (DOE) 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by