tfp.vi.total_variation

The Total Variation Csiszar-function in log-space.

tfp.vi.total_variation(
    logu, name=None
)

A Csiszar-function is a member of,

F = { f:R_+ to R : f convex }.

The Total-Variation Csiszar-function is:

f(u) = 0.5 |u - 1|

Warning: this function makes non-log-space calculations and may therefore be numerically unstable for |logu| >> 0.

Args
logu	float-like Tensor representing log(u) from above.
name	Python str name prefixed to Ops created by this function.

Returns
total_variation_of_u	float-like Tensor of the Csiszar-function evaluated at u = exp(logu).