From 7b149930bb53b93db74106ad20a30abf4b114f9b Mon Sep 17 00:00:00 2001
From: Volpeon <git@volpeon.ink>
Date: Fri, 13 Jan 2023 13:49:35 +0100
Subject: Removed PromptProcessor, modularized training loop

---
 models/clip/embeddings.py |  6 +++++-
 models/clip/prompt.py     | 38 --------------------------------------
 models/clip/util.py       | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+), 39 deletions(-)
 delete mode 100644 models/clip/prompt.py
 create mode 100644 models/clip/util.py

(limited to 'models/clip')

diff --git a/models/clip/embeddings.py b/models/clip/embeddings.py
index 9a23a2a..761efbc 100644
--- a/models/clip/embeddings.py
+++ b/models/clip/embeddings.py
@@ -40,6 +40,8 @@ class ManagedCLIPTextEmbeddings(CLIPTextEmbeddings):
         self.position_embedding = embeddings.position_embedding
         self.initializer_factor = config.initializer_factor
 
+        self.decay_target = self.token_embedding.weight[:, :].norm(dim=-1, keepdim=True).median().item()
+
         self.temp_token_embedding = nn.Embedding(
             self.token_embedding.num_embeddings,
             self.token_embedding.embedding_dim,
@@ -99,7 +101,9 @@ class ManagedCLIPTextEmbeddings(CLIPTextEmbeddings):
 
         return embeds
 
-    def normalize(self, target: float = 0.4, lambda_: float = 1.0):
+    def normalize(self, target: Optional[float] = None, lambda_: float = 1.0):
+        if target is None:
+            target = self.decay_target
         w = self.temp_token_embedding.weight
         pre_norm = w[self.temp_token_ids, :].norm(dim=-1, keepdim=True)
         w[self.temp_token_ids] = F.normalize(
diff --git a/models/clip/prompt.py b/models/clip/prompt.py
deleted file mode 100644
index a7380be..0000000
--- a/models/clip/prompt.py
+++ /dev/null
@@ -1,38 +0,0 @@
-from typing import Union, Optional
-
-import torch
-
-from transformers import CLIPTokenizer, CLIPTextModel
-
-
-class PromptProcessor():
-    def __init__(self, tokenizer: CLIPTokenizer, text_encoder: CLIPTextModel):
-        self.tokenizer = tokenizer
-        self.text_encoder = text_encoder
-
-    def get_input_ids(self, prompt: Union[str, list[str]]):
-        return self.tokenizer(
-            prompt,
-            padding="do_not_pad",
-        ).input_ids
-
-    def unify_input_ids(self, input_ids: list[list[int]]):
-        return self.tokenizer.pad(
-            {"input_ids": input_ids},
-            padding=True,
-            pad_to_multiple_of=self.tokenizer.model_max_length,
-            return_tensors="pt"
-        )
-
-    def get_embeddings(self, input_ids: torch.LongTensor, position_ids: Optional[torch.LongTensor] = None, attention_mask=None):
-        prompts = input_ids.shape[0]
-
-        input_ids = input_ids.view((-1, self.tokenizer.model_max_length)).to(self.text_encoder.device)
-        if position_ids is not None:
-            position_ids = position_ids.view((-1, self.tokenizer.model_max_length)).to(self.text_encoder.device)
-        if attention_mask is not None:
-            attention_mask = attention_mask.view((-1, self.tokenizer.model_max_length)).to(self.text_encoder.device)
-
-        text_embeddings = self.text_encoder(input_ids, position_ids=position_ids, attention_mask=attention_mask)[0]
-        text_embeddings = text_embeddings.view((prompts, -1, text_embeddings.shape[2]))
-        return text_embeddings
diff --git a/models/clip/util.py b/models/clip/util.py
new file mode 100644
index 0000000..8de8c19
--- /dev/null
+++ b/models/clip/util.py
@@ -0,0 +1,34 @@
+from typing import Optional
+
+import torch
+
+from transformers import CLIPTokenizer, CLIPTextModel
+
+
+def unify_input_ids(tokenizer: CLIPTokenizer, input_ids: list[list[int]]):
+    return tokenizer.pad(
+        {"input_ids": input_ids},
+        padding=True,
+        pad_to_multiple_of=tokenizer.model_max_length,
+        return_tensors="pt"
+    )
+
+
+def get_extended_embeddings(
+    text_encoder: CLIPTextModel,
+    input_ids: torch.LongTensor,
+    position_ids: Optional[torch.LongTensor] = None,
+    attention_mask=None
+):
+    model_max_length = text_encoder.config.max_position_embeddings
+    prompts = input_ids.shape[0]
+
+    input_ids = input_ids.view((-1, model_max_length)).to(text_encoder.device)
+    if position_ids is not None:
+        position_ids = position_ids.view((-1, model_max_length)).to(text_encoder.device)
+    if attention_mask is not None:
+        attention_mask = attention_mask.view((-1, model_max_length)).to(text_encoder.device)
+
+    text_embeddings = text_encoder(input_ids, position_ids=position_ids, attention_mask=attention_mask)[0]
+    text_embeddings = text_embeddings.view((prompts, -1, text_embeddings.shape[2]))
+    return text_embeddings
-- 
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