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models/__init__.py

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+# Empty init files 

models/embedder.py

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+from sentence_transformers import SentenceTransformer 
+import chromadb 
+ 
+class Embedder: 
+    def __init__(self, model_name="all-MiniLM-L6-v2"): 
+        self.model = SentenceTransformer(model_name) 
+        self.client = chromadb.Client() 
+        self.collection = self.client.create_collection(name="documents") 
+ 
+    def embed(self, texts): 
+        return self.model.encode(texts).tolist() 

models/llm_handler.py

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+