import gradio as gr from huggingface_hub import InferenceClient from typing import List, Tuple import fitz # PyMuPDF from sentence_transformers import SentenceTransformer, util import numpy as np import faiss client = InferenceClient("HuggingFaceH4/zephyr-7b-beta") # Placeholder for the app's state class MyApp: def __init__(self) -> None: self.documents = [] self.embeddings = None self.index = None self.load_pdf("THEDIA1.pdf") self.build_vector_db() def load_pdf(self, file_path: str) -> None: """Extracts text from a PDF file and stores it in the app's documents.""" doc = fitz.open(file_path) self.documents = [] for page_num in range(len(doc)): page = doc[page_num] text = page.get_text() self.documents.append({"page": page_num + 1, "content": text}) print("PDF processed successfully!") def build_vector_db(self) -> None: """Builds a vector database using the content of the PDF.""" model = SentenceTransformer('all-MiniLM-L6-v2') self.embeddings = model.encode([doc["content"] for doc in self.documents]) self.index = faiss.IndexFlatL2(self.embeddings.shape[1]) self.index.add(np.array(self.embeddings)) print("Vector database built successfully!") def search_documents(self, query: str, k: int = 3) -> List[str]: """Searches for relevant documents using vector similarity.""" model = SentenceTransformer('all-MiniLM-L6-v2') query_embedding = model.encode([query]) D, I = self.index.search(np.array(query_embedding), k) results = [self.documents[i]["content"] for i in I[0]] return results if results else ["No relevant documents found."] app = MyApp() def preprocess_input(user_input: str) -> str: """Preprocesses user input to enhance it for better context.""" if "therapy" in user_input.lower() or "exercise" in user_input.lower(): return "I am looking for guidance on therapy. Can you help me with some exercises or techniques to manage my stress and emotions?" return user_input def preprocess_response(response: str) -> str: """Preprocesses the response to make it more polished.""" response = response.strip() response = response.replace("\n\n", "\n") response = response.replace(" ,", ",") response = response.replace(" .", ".") response = " ".join(response.split()) return response def shorten_response(response: str) -> str: """Uses the Zephyr model to shorten and refine the response.""" messages = [{"role": "system", "content": "Shorten and refine this response in bullet list."}, {"role": "user", "content": response}] result = client.chat_completion(messages, max_tokens=512, temperature=0.5, top_p=0.9) return result.choices[0].message['content'].strip() def respond(message: str, history: List[Tuple[str, str]]): 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." messages = [{"role": "system", "content": system_message}] for val in history: if val[0]: messages.append({"role": "user", "content": val[0]}) if val[1]: messages.append({"role": "assistant", "content": val[1]}) # Preprocess user input preprocessed_message = preprocess_input(message) messages.append({"role": "user", "content": preprocessed_message}) # RAG - Retrieve relevant documents retrieved_docs = app.search_documents(preprocessed_message) context = "\n".join(retrieved_docs) if context.strip(): messages.append({"role": "system", "content": "Relevant documents: " + context}) response = client.chat_completion(messages, max_tokens=1024, temperature=0.7, top_p=0.9) response_content = "".join([choice.message['content'] for choice in response.choices if 'content' in choice.message]) polished_response = preprocess_response(response_content) shortened_response = shorten_response(polished_response) history.append((message, shortened_response)) return history, "" with gr.Blocks() as demo: gr.Markdown("# 🧘‍♀️ **Dialectical Behaviour Therapy**") gr.Markdown( "‼️Disclaimer: This chatbot is based on a DBT exercise book that is publicly available. " "We are not medical practitioners, and the use of this chatbot is at your own responsibility." ) chatbot = gr.Chatbot() with gr.Row(): txt_input = gr.Textbox( show_label=False, placeholder="Type your message here...", lines=1 ) submit_btn = gr.Button("Submit", scale=1) refresh_btn = gr.Button("Refresh Chat", scale=1, variant="secondary") example_questions = [ ["What are some techniques to handle distressing situations?"], ["How does DBT help with emotional regulation?"], ["Can you give me an example of an interpersonal effectiveness skill?"], ["I want to practice mindfulness. Can you help me?"], ["I want to practice distraction techniques. What can I do?"], ["How do I plan self-accommodation?"], ["What are some distress tolerance skills?"], ["Can you help me with emotional regulation techniques?"], ["How can I improve my interpersonal effectiveness?"], ["What are some ways to cope with stress using DBT?"], ["Can you guide me through a grounding exercise?"], ["How do I use DBT skills to handle intense emotions?"], ["What are some self-soothing techniques I can practice?"], ["How can I create a sensory-friendly safe space?"], ["Can you help me create a personal crisis plan?"], ["What are some affirmations for neurodivergent individuals?"], ["How can I manage rejection sensitive dysphoria?"], ["Can you guide me through observing with my senses?"], ["What are some accessible mindfulness exercises?"], ["How do I engage my wise mind?"], ["What are some values that I can identify with?"], ["How can I practice mindful appreciation?"], ["What is the STOP skill in distress tolerance?"], ["How can I use the TIPP skill to manage distress?"], ["What are some tips for managing meltdowns?"], ["Can you provide a list of stims that I can use?"], ["How do I improve my environment to reduce distress?"] ] gr.Examples(examples=example_questions, inputs=[txt_input]) submit_btn.click(respond, [txt_input, chatbot], [chatbot, txt_input]) refresh_btn.click(lambda: [], None, chatbot) if __name__ == "__main__": demo.launch()