1. A person who creates classifications
   "The librarian worked as a classifier, organizing books into appropriate categories"
    
2. A word or morpheme used in some languages in certain contexts (such as counting) to indicate the semantic class to which the counted item belongs
   "In Japanese, different classifiers are used for counting flat objects versus long, thin objects"
    
3. (machine learning) an algorithm that implements classification
   "Classifier performance depends greatly on the characteristics of the data to be classified"
    
4. An algorithm or software unit that identifies something in terms of two or more classes of interest
   "a machine learning model that evaluates email messages and outputs either 'spam' or 'not spam' is a binary classifier"

Derived forms: classifiers

Type of: algorithm, algorithmic program, algorithmic rule, morpheme, thinker, word

Encyclopedia: Classifier