Today I learned about a document classification method known as Random Forests. Well Wikipedia says that Random Forests, also called random decision forests, are an ensemble learning method for classification, regression and other tasks.

I first learned about this method in an article about a machine learning method that was able to classify documents related to autism diagnosis. Some people believe that it was an algorithm to diagnose autism, but I understood it as a method of classifying clinician documentation of children who may or may not have autism. But that's besides the point.

Document classification is something that has interested me, so I was pleased to learn that there are some PHP implementations of random forest. 

daynebatten.com/2015/06/random-forest-web-service-php/

github.com/y-uti/random-forest

So I might continue down this road. It can be really useful to have the means to classify documents.