Delete app.py
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app.py
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import gradio as gr
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from huggingface_hub import InferenceClient
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from typing import List, Tuple
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import fitz # PyMuPDF
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from sentence_transformers import SentenceTransformer, util
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import numpy as np
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import faiss
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client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
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# Placeholder for the app's state
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class MyApp:
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def __init__(self) -> None:
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self.documents = []
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self.embeddings = None
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self.index = None
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self.load_pdf("THEDIA1.pdf")
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self.build_vector_db()
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def load_pdf(self, file_path: str) -> None:
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"""Extracts text from a PDF file and stores it in the app's documents."""
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doc = fitz.open(file_path)
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self.documents = []
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for page_num in range(len(doc)):
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page = doc[page_num]
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text = page.get_text()
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self.documents.append({"page": page_num + 1, "content": text})
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print("PDF processed successfully!")
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def build_vector_db(self) -> None:
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"""Builds a vector database using the content of the PDF."""
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model = SentenceTransformer('all-MiniLM-L6-v2')
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self.embeddings = model.encode([doc["content"] for doc in self.documents])
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self.index = faiss.IndexFlatL2(self.embeddings.shape[1])
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self.index.add(np.array(self.embeddings))
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print("Vector database built successfully!")
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def search_documents(self, query: str, k: int = 3) -> List[str]:
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"""Searches for relevant documents using vector similarity."""
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model = SentenceTransformer('all-MiniLM-L6-v2')
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query_embedding = model.encode([query])
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D, I = self.index.search(np.array(query_embedding), k)
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results = [self.documents[i]["content"] for i in I[0]]
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return results if results else ["No relevant documents found."]
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app = MyApp()
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def preprocess_input(user_input: str) -> str:
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"""Preprocesses user input to enhance it for better context."""
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if "therapy" in user_input.lower():
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return "I am looking for guidance on therapy. Can you help me with some exercises or techniques to manage my stress and emotions?"
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# Add more rules as needed
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return user_input
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def preprocess_response(response: str) -> str:
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"""Preprocesses the response to make it more polished."""
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response = response.strip()
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response = response.replace("\n\n", "\n")
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response = response.replace(" ,", ",")
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response = response.replace(" .", ".")
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response = " ".join(response.split())
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return response
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def shorten_response(response: str) -> str:
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"""Uses the Zephyr model to shorten and refine the response."""
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messages = [{"role": "system", "content": "Shorten and refine this response."}, {"role": "user", "content": response}]
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result = client.chat_completion(messages, max_tokens=256, temperature=0.5, top_p=0.9)
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return result.choices[0].message['content'].strip()
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def respond(message: str, history: List[Tuple[str, str]]):
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system_message = "You are a concisely speaking empathetic Dialectical Behaviour Therapist assistant. You politely guide users through DBT exercises based on the given DBT book. You must say one thing at a time and ask follow-up questions to continue the chat."
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messages = [{"role": "system", "content": system_message}]
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for val in history:
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if val[0]:
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messages.append({"role": "user", "content": val[0]})
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if val[1]:
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messages.append({"role": "assistant", "content": val[1]})
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# Preprocess user input
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preprocessed_message = preprocess_input(message)
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messages.append({"role": "user", "content": preprocessed_message})
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# RAG - Retrieve relevant documents
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retrieved_docs = app.search_documents(preprocessed_message)
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context = "\n".join(retrieved_docs)
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if context.strip():
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messages.append({"role": "system", "content": "Relevant documents: " + context})
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response = client.chat_completion(messages, max_tokens=1024, temperature=0.7, top_p=0.9)
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response_content = "".join([choice.delta.content for choice in response.choices if choice.delta.content])
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polished_response = preprocess_response(response_content)
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shortened_response = shorten_response(polished_response)
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history.append((message, shortened_response))
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return history, ""
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with gr.Blocks() as demo:
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gr.Markdown("# 🧘♀️ **Dialectical Behaviour Therapy**")
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gr.Markdown(
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"‼️Disclaimer: This chatbot is based on a DBT exercise book that is publicly available. "
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"We are not medical practitioners, and the use of this chatbot is at your own responsibility."
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)
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chatbot = gr.Chatbot()
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with gr.Row():
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txt_input = gr.Textbox(
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show_label=False,
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placeholder="Type your message here...",
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lines=1
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)
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submit_btn = gr.Button("Submit", scale=1)
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refresh_btn = gr.Button("Refresh Chat", scale=1, variant="secondary")
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example_questions = [
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["I feel overwhelmed with work."],
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["Can you guide me through a quick meditation?"],
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["How do I stop worrying about things I can't control?"],
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["What are some DBT skills for managing anxiety?"],
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["Can you explain mindfulness in DBT?"],
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["What is radical acceptance?"],
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["How can I practice distress tolerance?"],
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["What are some techniques to handle distressing situations?"],
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["How does DBT help with emotional regulation?"],
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["Can you give me an example of an interpersonal effectiveness skill?"]
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]
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gr.Examples(examples=example_questions, inputs=[txt_input])
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submit_btn.click(respond, [txt_input, chatbot], [chatbot, txt_input])
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refresh_btn.click(lambda: [], None, chatbot)
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if __name__ == "__main__":
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demo.launch()
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