2 ms·
Isn't this normally referred to as "degrees of freedom" rather than dimensions?
by arcticbull 5y ago
Isn't this normally referred to as "degrees of freedom" rather than dimensions?
- mvanaltvorst 5y agoStatisticians and mathematicians call them dimensions, machine learning engineers call them "features". Statisticians and mathematicians usually interpret observations as vectors in n-dimensional space, which leads to some interesting geometric results. Hence the term dimension, we do mathematics with them as if they were actual points in some high-dimensional space. Degrees of freedom are something a bit more nuanced that are of use when you start to do specific statistical tests, and they do not have to be exactly equal to your amount of dimensions.
- panda-giddiness 5y agoNo, these are separate concepts. As an example: a simple linear regression through 7 data points has 2 dimensions (x and y) but 5 degrees of freedom (number of data points - number of estimated parameters).