@startuml chat_rag
class PyPDFLoader {
}

class HuggingFaceEmbeddings {
}

class CharacterTextSplitter {
}

class Chroma {
}

class LlamaCpp {
}

class LlamaModelSingleton {
    {static} get_instance()
    _load_llm()
}

PyPDFLoader --> HuggingFaceEmbeddings : uses
HuggingFaceEmbeddings --> CharacterTextSplitter : uses
CharacterTextSplitter --> Chroma : creates vectors
LlamaCpp ..> LlamaModelSingleton : instance
@enduml