A dense feature is a featurerepresentation in which most or all values are nonzero, often expressed as a tensor or vector of floating-point values. Dense features contrast with sparse features, where most entries are zero or absent.
A feature in which most or all values are nonzero, typically
a Tensor of floating-point values. For example, the following
10-element Tensor is dense because 9 of its values are nonzero:
---------------|
3 5 4 4 6 |
Contrast with sparse feature.