--- 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 --- ### ::: ultralytics.nn.modules.transformer.TransformerEncoderLayer <br><br> ## AIFI --- ### ::: ultralytics.nn.modules.transformer.AIFI <br><br> ## TransformerLayer --- ### ::: ultralytics.nn.modules.transformer.TransformerLayer <br><br> ## TransformerBlock --- ### ::: ultralytics.nn.modules.transformer.TransformerBlock <br><br> ## MLPBlock --- ### ::: ultralytics.nn.modules.transformer.MLPBlock <br><br> ## MLP --- ### ::: ultralytics.nn.modules.transformer.MLP <br><br> ## LayerNorm2d --- ### ::: ultralytics.nn.modules.transformer.LayerNorm2d <br><br> ## MSDeformAttn --- ### ::: ultralytics.nn.modules.transformer.MSDeformAttn <br><br> ## DeformableTransformerDecoderLayer --- ### ::: ultralytics.nn.modules.transformer.DeformableTransformerDecoderLayer <br><br> ## DeformableTransformerDecoder --- ### ::: ultralytics.nn.modules.transformer.DeformableTransformerDecoder <br><br>