vi_total_variation | R Documentation |
A Csiszar-function is a member of F = { f:R_+ to R : f convex }
.
vi_total_variation(logu, name = NULL)
logu |
|
name |
name prefixed to Ops created by this function. |
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
.
total_variation_of_u: float
-like Tensor
of the Csiszar-function
evaluated at u = exp(logu)
.
Other vi-functions#':
vi_t_power()
,
vi_triangular()
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