SexNet classification

Closed weights 1.6K parameters October 1990

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
1 October 1990
Authors
B. Golomb, D. T. Lawrence, T. Sejnowski

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
1.6K

Largest classification model: 40*40 + 40=1640 (Figure 2)

Training data
80 tokens

“Each training on a different 80 faces, leaving a distinct set of 10 untrained faces for testing”

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,Highly cited
Record confidence
Likely

Sources

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

Reference
SEXNET: A Neural Network Identifies Sex From Human Faces
Last updated
28 November 2025

What the numbers mean

Background

SexNet classification was published by its authors, during October 1990.

It works in the domain of Vision, and is recorded as performing the task of image classification.

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

Training and provenance

The training set ran to roughly 80 tokens of text.

Its inclusion criterion: historical significance,Highly cited.

Answers

SexNet classification — common questions

01

SexNet classification— is it open source?

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

02

SexNet classification— how many parameters does it have?

It has a parameter count of 1.6K. Largest classification model: 40*40 + 40=1640 (Figure 2). 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.

03

SexNet classification— when was it released?

It was published in October 1990. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.

04

SexNet classification— what is it used for?

It works in the domain of Vision, and is recorded as handling the task of image classification. These are the areas it was designed around; they describe intent rather than a hard boundary.

05

SexNet classification— what GPU do I need to run it?

None. This 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.

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.