app.py

import gradio as gr
import tiktoken
import pickle
import faiss

import os
from langchain_openai import OpenAIEmbeddings
from langchain_openai import ChatOpenAI

# Load the FAISS index from the .pkl file
with open("index.pkl", "rb") as f:
    db = faiss.deserialize_index(f.read())

def get_response_from_query(db, query, k=3):

    docs = db.similarity_search(query, k=k)

    docs_page_content = " ".join([d.page_content for d in docs])

    # llm = BardLLM()
    llm = ChatOpenAI(model_name="gpt-3.5-turbo-16k",temperature=0)

    prompt = PromptTemplate(
        input_variables=["question", "docs"],
        template="""
        A bot that is open to discussions about different cultural, philosophical and political exchanges. I will use do different analysis to the articles provided to me. Stay truthful and if you weren't provided any resources give your oppinion only.
        Answer the following question: {question}
        By searching the following articles: {docs}

        Only use the factual information from the documents. Make sure to mention key phrases from the articles.

        If you feel like you don't have enough information to answer the question, say "I don't know".

        """,
    )

    chain = LLMChain(llm=llm, prompt=prompt)
    response = chain.run(question=query, docs=docs_page_content,return_source_documents=True)
    r_text = str(response)

    ##evaluation part

    prompt_eval = PromptTemplate(
        input_variables=["answer", "docs"],
        template="""
       You job is to evaluate if the response to a given context is faithful.

        for the following: {answer}
        By searching the following article: {docs}

       Give a reason why they are similar or not, start with a Yes or a No.
        """,
    )

    chain_part_2 = LLMChain(llm=llm, prompt=prompt_eval)


    evals = chain_part_2.run(answer=r_text, docs=docs_page_content)

    return response,docs,evals



def greet(query):

    answer,sources,evals = get_response_from_query(db,query,2)
    return answer,sources,evals
examples = [
    ["How to be happy"],
    ["Climate Change Challenges in Europe"],
    ["Philosophy in the world of Minimalism"],
    ["Hate Speech  vs Freedom of Speech"],
    ["Articles by Noam Chomsky on US Politics"],
    ["The importance of values and reflection"]
    ]
demo = gr.Interface(fn=greet, title="cicero-semantic-search", inputs="text",
                    outputs=[gr.components.Textbox(lines=3, label="Response"),
                             gr.components.Textbox(lines=3, label="Source"),
                             gr.components.Textbox(lines=3, label="Evaluation")],
                   examples=examples)

demo.launch(share=True)