Implementating the classifier

In the earlier parts of the chapter, we sketched out a dummy Classifier type that does nothing. Let's make it do something now:

type Classifier struct {
  corpus *corpus.Corpus

  tfidfs [MAXCLASS]*tfidf.TFIDF
  totals [MAXCLASS]float64

  ready bool
  sync.Mutex
}

Here, there are introductions to a few things. Let's walk them through one by one:

• We'll start with the corpus.Corpus type.
• This is a type imported from the corpus package, which is a subpackage of the NLP library for Go, lingo.
• To install lingo, simply run go get -u github.com/chewxy/lingo/....
• To use the corpus package, simply import it like so: import "github.com/chewxy/lingo/corpus".

Bear in mind that in the near future, the package will change to github.com/go-nlp/lingo. If you are reading this after January 2019, use the new address.

A corpus.Corpus object simply...