tree 931d6d46cb83d1f6109e5a70fe3c8a44d9d8b3c5
parent 5764337ce7ac5d53b720bda47bf7c3f8a881001c
author Debargha Mukherjee <debargha@google.com> 1551116384 -0800
committer Debargha Mukherjee <debargha@google.com> 1551324636 +0000

Replace surface fit model w/ functional modeling

Uses a logistic model for distortion/sse and a clamped
linear model for rate, with the argument being sse/q^2.
The parameters of the underlying model are determined
based on blocksize and sse.

This model is substantially better in metrics on a training
set than the previous model as well as the curvfit model.
The model is unused currently but will be introduced in the
encoder in various ways subsequently.

Change-Id: Ife2e193e167de8b80c8486f6157ba22d6f1caccd