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update app.py
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app.py
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# Imports
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from langchain.document_loaders import PyPDFLoader
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import os
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from
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from langchain.embeddings import OpenAIEmbeddings, HuggingFaceEmbeddings
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from langchain.vectorstores import Chroma
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from langchain import HuggingFacePipeline
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from langchain.chat_models import ChatOpenAI
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from dotenv import load_dotenv
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from langchain.memory import ConversationBufferMemory, ConversationTokenBufferMemory
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import gradio as gr
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os.environ['OPENAI_API_KEY'] = api_key
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print(documents)
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# Creo el objeto que permite dividir el texto en chunks
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text_splitter = CharacterTextSplitter(chunk_size=1024, chunk_overlap=64)
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# Esto lo que hace es dividir el texto en chunks de 2048 caracteres con un overlap de 128 caracteres
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texts = text_splitter.split_documents(documents)
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# Genero el objeto que crea los embeddings
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# Nota: Estos embeddings son gratuitos a diferencia de los de OpenAI
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embeddings = HuggingFaceEmbeddings()
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# Defino el modelo de lenguaje
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llm = ChatOpenAI(model='gpt-3.5-turbo', temperature=0.0, max_tokens=1000)
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# Creo la base de datos de vectores
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global vectorstore
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vectorstore = Chroma.from_documents(texts, embeddings)
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# Defino la memoria
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global memory
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# La definicion de Memoria no es trivial, es bastante compleja de hecho se deben especificar bien todos los parameteros para que no de error
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memory = ConversationTokenBufferMemory(llm=llm,
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memory_key="chat_history",
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input_key='question',
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output_key='answer',
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max_token_limit=1000,
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return_messages=False)
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# Defino la cadena de qa
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global qa
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qa = ConversationalRetrievalChain.from_llm(llm,
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vectorstore.as_retriever(search_kwargs={'k': 3}), # Este parametro especifica cuantos chunks se van a recuperar
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return_source_documents=True,
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verbose=True,
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chain_type='stuff',
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memory=memory,
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max_tokens_limit=2500,
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get_chat_history=lambda h: h)
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return 'Done'
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# Funcion que ejecuta LLM y responde la pregunta
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def answer_question(question):
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result = qa(inputs={'question': question})
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pages = [x.metadata['page'] for i, x in enumerate(result['source_documents'])]
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return result['answer'], pages
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# Funcion que pega las respuestas anteriores en el objeto Chat bot
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def bot(history):
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res = qa(
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{
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'question': history[-1][0],
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'chat_history': history[:-1]
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}
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)
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history[-1][1] = res['answer']
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return history
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# Agrego el texto a la historia del chat
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def add_text(history, text):
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history = history + [(text, None)]
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return history, ""
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# Analizar como parsea las ecuaciones
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with gr.Blocks() as demo:
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with gr.Tab(label='Load PDF'):
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with gr.Row():
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with gr.Column():
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open_ai_key = gr.Textbox(label='Ingresa tu api key de Open AI', type='password')
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with gr.Row():
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with gr.Column(scale=0.4):
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api_key_button = gr.Button('Enviar', variant='primary')
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with gr.Row():
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pdf_file = gr.File(label='PDF file')
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# Esta linea esta para probar si el calculo se realiza
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emb = gr.Textbox(label='Calculo de Embeddings, por favor espere...')
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# send_pdf = gr.Button(label='Load PDF').style(full_width=False)
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with gr.Row():
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with gr.Column(scale=0.50):
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send_pdf = gr.Button(label='Load PDF')
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send_pdf.click(load_pdf, pdf_file, emb)
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with gr.Tab(label='Galicia QA Demo'):
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chatbot = gr.Chatbot([],
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elem_id="chatbot",
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label='Document GPT').style(height=500)
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with gr.Row():
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with gr.Column(scale=0.80):
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txt = gr.Textbox(
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show_label=False,
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placeholder="Enter text and press enter",
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).style(container=False)
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with gr.Column(scale=0.10):
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submit_btn = gr.Button(
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'Submit',
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variant='primary'
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)
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with gr.Column(scale=0.10):
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clear_btn = gr.Button(
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'Clear',
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variant='stop'
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)
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# Tanto el submit (hacer enter en el campo de texto) como el submit_btn hacen la misma accion
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txt.submit(fn=add_text, inputs=[chatbot, txt], outputs=[chatbot, txt] # Cuando envio el submit hago esta funcion
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).then(fn=bot, inputs=chatbot, outputs=chatbot) # Luego hago esta otra funcion
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submit_btn.click(fn=add_text, inputs=[chatbot, txt], outputs=[chatbot, txt]
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).then(fn=bot, inputs=chatbot, outputs=chatbot)
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clear_btn.click(lambda: None, None, chatbot, queue=False)
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api_key_button.click(fn=process_key, inputs=[open_ai_key], outputs=None)
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demo.launch(inline=False)
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# Imports
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import os
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import torch
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from transformers import pipeline, AutoTokenizer, AutoModelForSequenceClassification
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import transformers
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import gradio as gr
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model_name = "MoritzLaurer/mDeBERTa-v3-base-xnli-multilingual-nli-2mil7"
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tokenizer = AutoTokenizer.from_pretrained(model_name)
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classifier = pipeline("zero-shot-classification", model="MoritzLaurer/mDeBERTa-v3-base-mnli-xnli",tokenizer=tokenizer)
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sequence_to_classify = "Metió 5 goles en dos minutos"
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candidate_labels = ["futbol","rugby","basket","tenis","golf","automovilismo","ciclismo"]
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output = classifier(sequence_to_classify, candidate_labels, multi_label=False)
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print(output)
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demo.launch(inline=False)
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