Mixture of linear models

Closed weights 384K parameters December 1994

No estimate

No hardware requirements for this model

The weights for this model have not been published, so it cannot be downloaded or run on your own hardware at any size. It is reachable only through its provider, and no graphics card changes that.

On record

Full specification

Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.

Origin

Who built this model, where, and when it was published.

Published
2 December 1994
Authors
Geoffrey E. Hinton, M. Revow, P. Dayan

What it does

The problem areas the model was built for. A model can carry several of each.

Domain
Vision
Task
Image classification

Size

How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.

Parameters
384K

“In the example we describe, 7000 training images are sufficient to fit 384,000 parameters“

Training data
1,792,000 tokens

"7000 training images are sufficient"

Training compute

The arithmetic performed to train the model, measured in floating-point operations. It is a measure of what the training run cost, not of how fast the finished model answers you.

Training compute
4.5 × 10¹¹ FLOP

0.3*12*60*60*35000000=453600000000=4.54e11 Assuming a utilization of 0.3 and interpreting "overnight" as 12 hours. “the training procedure is fast enough to do the fitting overnight on an R4400-based machine. “ R4400 has 35MFLOPS (“Compare this to the 200MHz R4400 which is rated at about 35MFLOPS”, http://www.sgidepot.co.uk/perf.html)

How it was established
Hardware

The training run

What it physically took to train: which chips, how many, for how long, and what that drew from the wall.

Wall-clock time
12 hours

"the training procedure is fast enough to do the fitting overnight on an R4400-based machine."

How it is classified

Labels the source dataset applies when tracking notable models, and how confident it is in the entry.

Why it is tracked
Historical significance
Record confidence
Likely

Sources

Where this record came from and when it was last checked.

Reference
Recognizing Handwritten Digits Using Mixtures of Linear Models
Last updated
28 November 2025

What the numbers mean

Background

Mixture of linear models was published by its authors, in December 1994.

It works in Vision, and is recorded as doing image classification.

Its weights were never published, so it can only be reached through its provider. No graphics card changes that.

How it was trained

Training it took roughly 4.5 × 10¹¹ FLOP of computation — a measure of what producing the model cost, not of how fast it answers.

Around 1,792,000 tokens went into training it.

Its inclusion criterion is historical significance.

Answers

Mixture of linear models — common questions

01

When was Mixture of linear models released?

Mixture of linear models was published in December 1994. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.

02

What is Mixture of linear models used for?

Mixture of linear models works in Vision, and is recorded as handling image classification. A model can carry several of each, so these are the areas it was built for rather than a limit on what it will attempt.

03

How much compute was used to train Mixture of linear models?

Around 4.5 × 10¹¹ FLOP. That measures what producing the model cost and says nothing about how quickly it answers once trained — inference speed comes from memory bandwidth, not from the training budget.

04

What GPU do I need to run Mixture of linear models?

None. Mixture of linear models is a closed model — its weights were never published, so it cannot be downloaded or run on your own hardware at any price. It is reachable only through its provider.

05

Is Mixture of linear models open source?

The licensing for Mixture of linear models was never recorded in our source data. We treat unstated licensing as closed, because an unrecorded licence is not one to rely on.

06

How many parameters does Mixture of linear models have?

Mixture of linear models has 384K parameters. “In the example we describe, 7000 training images are sufficient to fit 384,000 parameters“. That figure is the total, and it is what decides how much memory the model needs — roughly half a gigabyte per billion at the compression most people use.

Source

Original publication

Record last updated 28 November 2025

The other direction

Looking at it from the other side?

This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.