Transformers

This module contains PyTorch implementations and explanations of original transformer from paper Attention Is All You Need, and derivatives and enhancements of it.

• Multi-head attention
• Relative multi-head attention
• Transformer Encoder and Decoder Models
• Fixed positional encoding

GPT Architecture

This is an implementation of GPT-2 architecture.

GLU Variants

This is an implementation of the paper GLU Variants Improve Transformer.

kNN-LM

This is an implementation of the paper Generalization through Memorization: Nearest Neighbor Language Models.

Feedback Transformer

This is an implementation of the paper Accessing Higher-level Representations in Sequential Transformers with Feedback Memory.

Switch Transformer

This is a miniature implementation of the paper Switch Transformers: Scaling to Trillion Parameter Models with Simple and Efficient Sparsity. Our implementation only has a few million parameters and doesn’t do model parallel distributed training. It does single GPU training but we implement the concept of switching as described in the paper.

49from .configs import TransformerConfigs
50from .models import TransformerLayer, Encoder, Decoder, Generator, EncoderDecoder
51from .mha import MultiHeadAttention
52from .relative_mha import RelativeMultiHeadAttention