Some of the things I've learned every day since Oct 10, 2016
Category Archives: machine learning
January 9, 2017Posted by on
In statistics, a dummy variable is an independent variable which only takes on the values 0 or 1. This is used as an indicator variable, categorizing the object in question and adjusting its model accordingly: if the value is 1, the weight of the dummy variable will be factored in, but not if the value is 0.
December 25, 2016Posted by on
2 sets of points in -dimensional Euclidean space are linearly separable if and only if there exists a non-zero vector and a number such that
holds for every , and does not hold for every . Intuitively, this means that two sets of points in an -dimensional Euclidean space are linearly separable if there is an -dimensional plane that when inserted into the same space separates the two sets.
(This concept could probably be extended to spaces which share certain properties with , such as having a partial order, closure, etc., but gives the simplest example.)