einsum in logarithmic space.
a formula compatible with
einsum. (But note that
ellipses are not supported.)
tensors to which contractions will be applied.
logeinsumexp(formula, *tensors) is equivalent to
tf.math.log(einsum(formula, *map(tf.math.exp, tensors))) except
that it is more numerically stable.
This implementation of
logeinsumexp is primarily intended for internal
use in the
marginalize library and assumes the formula is well-formed.