1 files changed, 0 insertions, 42 deletions
diff --git a/text_recognizer/networks/transformer/positional_encodings/rotary_embedding.py b/text_recognizer/networks/transformer/positional_encodings/rotary_embedding.py
deleted file mode 100644
index 2f58964..0000000
--- a/text_recognizer/networks/transformer/positional_encodings/rotary_embedding.py
+++ /dev/null
@@ -1,42 +0,0 @@
-"""Roatary embedding.
-
-Stolen from lucidrains:
-    https://github.com/lucidrains/rotary-embedding-torch
-
-Explanation of roatary:
-    https://blog.eleuther.ai/rotary-embeddings/
-"""
-from typing import Tuple
-
-from einops import rearrange
-import torch
-from torch import nn
-from torch import Tensor
-
-
-class RotaryEmbedding(nn.Module):
-    """Rotary positional embedding."""
-
-    def __init__(self, dim: int):
-        super().__init__()
-        inv_freq = 1.0 / (10000 ** (torch.arange(0, dim, 2).float() / dim))
-        self.register_buffer("inv_freq", inv_freq)
-
-    def forward(self, x: Tensor, seq_dim: int = 1) -> Tensor:
-        """Encodes tensor x with rotary embeddings."""
-        t = torch.arange(x.shape[seq_dim], device=x.device).type_as(self.inv_freq)
-        freqs = torch.einsum("i , j -> i j", t, self.inv_freq)
-        emb = torch.cat((freqs, freqs), dim=-1)
-        return rearrange(emb, "n d -> () () n d")
-
-
-def rotate_half(x: Tensor) -> Tensor:
-    x = rearrange(x, "... (j d) -> ... j d", j=2)
-    x1, x2 = x.unbind(dim=-2)
-    return torch.cat((-x2, x1), dim=-1)
-
-
-def apply_rotary_pos_emb(t: Tensor, freqs: Tensor) -> Tensor:
-    seq_len = t.shape[-2]
-    freqs = freqs[:, :, -seq_len:]
-    return (t * freqs.cos()) + (rotate_half(t) * freqs.sin())