Decoder. plain-English AI glossary

ResNet

● Core

Also called Residual Network

The network that let us stack layers really deep by giving each one a shortcut around itself.

Think of it like

Like an express lane on a highway — if a stretch of road adds nothing, traffic can just skip past it untouched.

Example

ResNet-50 is still a default image backbone in production vision systems years after its 2015 debut.

How it actually works

Very deep networks used to get worse, not better, because the training signal faded on its way back through dozens of layers. ResNet added “residual” shortcuts that let each layer learn only the change it needs, with the input passed through untouched by default. That single trick unlocked networks hundreds of layers deep and reshaped everything after.

For product teams

A durable, battle-tested vision backbone you can still ship on today.

For engineers

A CNN with identity skip connections so layers learn residual functions, easing gradient flow.

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