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Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by cubefox on Friday December 08, 2023 @07:24AM (#38568180)
"represented by controllable 3D Gaussians"

They just assume everyone knows what they mean with "3D Gaussian".

Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by drsopp on Friday December 08, 2023 @07:26AM (#38568198)
No, they assume their peers do.
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by vmfunction on Friday December 08, 2023 @07:35AM (#38568265)
It is academia ;-)
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by GaggiX on Friday December 08, 2023 @07:41AM (#38568310)
I don't think a research paper is meant to be understood by everyone, and I imagine the authors don't have that expectation either.
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by data-ottawa on Friday December 08, 2023 @10:53AM (#38570448)
I actually have the same gripe, unfortunately there is a long history of academic fields naming things like this (there’s an entire Wikipedia page on this banned after Gauss/“Gaussian” https://en.wikipedia.org/wiki/List_of_things_named_after_Car...)
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by blovescoffee on Friday December 08, 2023 @04:23PM (#38574619)
Not really. There are many things named after Gauss but a "Gaussian" is almost always meant to be a probability distribution / density function that is very well understood and defined (and common)
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by eigenvalue on Friday December 08, 2023 @11:16AM (#38570692)
Take a linear algebra course or read a textbook before trying to read and understand cutting edge ML research!
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by cubefox on Friday December 08, 2023 @12:55PM (#38571933)
Rude!
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by ndriscoll on Friday December 08, 2023 @01:20PM (#38572285)
Seems like they just mean the vector version of a Gaussian function: f(r) = exp(-r•r). Basically a "bell curve" except in 3D so it's a ball that's dense at the center and dies off. Then the optimizer might learn to produce an intensity, offset, and width for each point in a cloud, so the A,B,C for A*f((r-B)/C) at each point or something.
Re:Gaussian Head Avatar: Ultra High-Fidelity Head Avatar via... by blovescoffee on Friday December 08, 2023 @04:21PM (#38574600)
This is in fact what the optimizer does. At least in the original paper, the model learns to skew and rotate the gaussians.