What is an Ordinal Number?
Ordinal Numbers and Machine Learning
Ordinal numbers are used in machine learning, particularly when scientists want to perform ordinal regressions. An ordinal regression is a regression that is used in predicting a variable in which the order, or sequence, of variables is significant. For example, social scientists often gather data that is defined by scales of human preferences (i.e. feelings of positivity 1-5). In order to predict certain variables about a population with that data, the scientists often turn to ordinal regression. In machine learning, this process is sometimes also known as ranked learning.