From 9b808b6ca102cfec0c273626a0bcadf897b7c942 Mon Sep 17 00:00:00 2001
From: Volpeon <git@volpeon.ink>
Date: Mon, 19 Dec 2022 21:10:58 +0100
Subject: Improved dataset prompt handling, fixed

---
 data/csv.py | 41 +++++++++++++++++++++++------------------
 1 file changed, 23 insertions(+), 18 deletions(-)

(limited to 'data')

diff --git a/data/csv.py b/data/csv.py
index 053457b..6525e45 100644
--- a/data/csv.py
+++ b/data/csv.py
@@ -16,26 +16,29 @@ def prepare_prompt(prompt: Union[str, Dict[str, str]]):
     return {"content": prompt} if isinstance(prompt, str) else prompt
 
 
-def shuffle_prompt(prompt: str, dropout: float = 0):
-    def handle_block(block: str):
-        words = block.split(", ")
-        words = [w for w in words if w != ""]
-        if dropout != 0:
-            words = [w for w in words if np.random.random() > dropout]
-        np.random.shuffle(words)
-        return ", ".join(words)
-
-    prompt = prompt.split(". ")
-    prompt = [handle_block(b) for b in prompt if b != ""]
+def keywords_to_prompt(prompt: list[str], dropout: float = 0) -> str:
+    if dropout != 0:
+        prompt = [keyword for keyword in prompt if np.random.random() > dropout]
     np.random.shuffle(prompt)
-    prompt = ". ".join(prompt)
-    return prompt
+    return ", ".join(prompt)
+
+
+def prompt_to_keywords(prompt: str, expansions: dict[str, str]) -> list[str]:
+    def expand_keyword(keyword: str) -> list[str]:
+        return [keyword] + expansions[keyword].split(", ") if keyword in expansions else [keyword]
+
+    return [
+        kw
+        for keyword in prompt.split(", ")
+        for kw in expand_keyword(keyword)
+        if keyword != ""
+    ]
 
 
 class CSVDataItem(NamedTuple):
     instance_image_path: Path
     class_image_path: Path
-    prompt: str
+    prompt: list[str]
     nprompt: str
 
 
@@ -91,7 +94,7 @@ class CSVDataModule(pl.LightningDataModule):
         self.num_workers = num_workers
         self.batch_size = batch_size
 
-    def prepare_items(self, template, data) -> list[CSVDataItem]:
+    def prepare_items(self, template, expansions, data) -> list[CSVDataItem]:
         image = template["image"] if "image" in template else "{}"
         prompt = template["prompt"] if "prompt" in template else "{content}"
         nprompt = template["nprompt"] if "nprompt" in template else "{content}"
@@ -100,7 +103,8 @@ class CSVDataModule(pl.LightningDataModule):
             CSVDataItem(
                 self.data_root.joinpath(image.format(item["image"])),
                 None,
-                prompt.format(**prepare_prompt(item["prompt"] if "prompt" in item else "")),
+                prompt_to_keywords(prompt.format(
+                    **prepare_prompt(item["prompt"] if "prompt" in item else "")), expansions),
                 nprompt.format(**prepare_prompt(item["nprompt"] if "nprompt" in item else "")),
             )
             for item in data
@@ -130,6 +134,7 @@ class CSVDataModule(pl.LightningDataModule):
         with open(self.data_file, 'rt') as f:
             metadata = json.load(f)
         template = metadata[self.template_key] if self.template_key in metadata else {}
+        expansions = metadata["expansions"] if "expansions" in metadata else {}
         items = metadata["items"] if "items" in metadata else []
 
         if self.mode is not None:
@@ -138,7 +143,7 @@ class CSVDataModule(pl.LightningDataModule):
                 for item in items
                 if "mode" in item and self.mode in item["mode"]
             ]
-        items = self.prepare_items(template, items)
+        items = self.prepare_items(template, expansions, items)
         items = self.filter_items(items)
 
         num_images = len(items)
@@ -255,7 +260,7 @@ class CSVDataset(Dataset):
 
         example = {}
 
-        example["prompts"] = shuffle_prompt(unprocessed_example["prompts"])
+        example["prompts"] = keywords_to_prompt(unprocessed_example["prompts"], self.dropout)
         example["nprompts"] = unprocessed_example["nprompts"]
 
         example["instance_images"] = self.image_transforms(unprocessed_example["instance_images"])
-- 
cgit v1.2.3-54-g00ecf