---
description: Learn about Ultralytics transformer encoder, layer, MLP block, LayerNorm2d and the deformable transformer decoder layer. Expand your understanding of these crucial AI modules.
keywords: Ultralytics, Ultralytics documentation, TransformerEncoderLayer, TransformerLayer, MLPBlock, LayerNorm2d, DeformableTransformerDecoderLayer
---

## TransformerEncoderLayer
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### ::: ultralytics.nn.modules.transformer.TransformerEncoderLayer
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## AIFI
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### ::: ultralytics.nn.modules.transformer.AIFI
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## TransformerLayer
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### ::: ultralytics.nn.modules.transformer.TransformerLayer
<br><br>

## TransformerBlock
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### ::: ultralytics.nn.modules.transformer.TransformerBlock
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## MLPBlock
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### ::: ultralytics.nn.modules.transformer.MLPBlock
<br><br>

## MLP
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### ::: ultralytics.nn.modules.transformer.MLP
<br><br>

## LayerNorm2d
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### ::: ultralytics.nn.modules.transformer.LayerNorm2d
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## MSDeformAttn
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### ::: ultralytics.nn.modules.transformer.MSDeformAttn
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## DeformableTransformerDecoderLayer
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### ::: ultralytics.nn.modules.transformer.DeformableTransformerDecoderLayer
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## DeformableTransformerDecoder
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### ::: ultralytics.nn.modules.transformer.DeformableTransformerDecoder
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