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{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"id": "d0df5ec3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Requirement already satisfied: gradio in c:\\users\\victo\\appdata\\local\\programs\\python\\python313\\lib\\site-packages (from -r requirements.txt (line 1)) (5.29.0)\n",
"Requirement already satisfied: transformers in c:\\users\\victo\\appdata\\local\\programs\\python\\python313\\lib\\site-packages (from -r requirements.txt (line 2)) (4.51.3)\n",
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]
}
],
"source": [
"! pip install -r requirements.txt"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "a50bbe16",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"RAG configs: ['text-corpus', 'question-answer']\n",
"Loaded 3200 wiki passages.\n",
"Loaded 1000 SQuAD examples.\n"
]
},
{
"data": {
"application/vnd.jupyter.widget-view+json": {
"model_id": "72faca76fa9f4dd19d6d334cec19c88f",
"version_major": 2,
"version_minor": 0
},
"text/plain": [
"Resolving data files: 0%| | 0/26 [00:00<?, ?it/s]"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"data": {
"application/vnd.jupyter.widget-view+json": {
"model_id": "09b30d351c304fb9a4cb58ed0fd0fcb6",
"version_major": 2,
"version_minor": 0
},
"text/plain": [
"Resolving data files: 0%| | 0/26 [00:00<?, ?it/s]"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Loaded 1000 TriviaQA examples.\n"
]
}
],
"source": [
"from datasets import load_dataset, get_dataset_config_names\n",
"\n",
"# 1) See which configs RAG mini-wiki offers\n",
"print(\"RAG configs:\", get_dataset_config_names(\"rag-datasets/rag-mini-wikipedia\"))\n",
"\n",
"# 2) Load the raw wiki passages\n",
"wiki_ds = load_dataset(\n",
" \"rag-datasets/rag-mini-wikipedia\",\n",
" \"text-corpus\",\n",
" split=\"passages\"\n",
")\n",
"passages = wiki_ds[\"passage\"]\n",
"print(f\"Loaded {len(passages)} wiki passages.\")\n",
"\n",
"# 3) Load a small SQuAD v2 slice (first 1 000 examples for speed)\n",
"squad = load_dataset(\"rajpurkar/squad_v2\", split=\"train[:1000]\")\n",
"print(f\"Loaded {len(squad)} SQuAD examples.\")\n",
"\n",
"# 4) Load TriviaQA small\n",
"trivia = load_dataset(\n",
" \"mandarjoshi/trivia_qa\",\n",
" \"rc\",\n",
" split=\"validation[:1000]\"\n",
")\n",
"print(f\"Loaded {len(trivia)} TriviaQA examples.\")\n"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "e9307bab",
"metadata": {},
"outputs": [
{
"data": {
"application/vnd.jupyter.widget-view+json": {
"model_id": "2ee1f7b78acf419eb853d10599b86438",
"version_major": 2,
"version_minor": 0
},
"text/plain": [
"Batches: 0%| | 0/100 [00:00<?, ?it/s]"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Indexed 3200 vectors of size 384.\n"
]
}
],
"source": [
"from sentence_transformers import SentenceTransformer\n",
"import faiss\n",
"\n",
"# Embedder\n",
"embedder = SentenceTransformer(\"all-MiniLM-L6-v2\")\n",
"embeddings = embedder.encode(passages, show_progress_bar=True, convert_to_numpy=True)\n",
"\n",
"# Build index\n",
"dim = embeddings.shape[1]\n",
"index = faiss.IndexFlatL2(dim)\n",
"index.add(embeddings)\n",
"print(f\"Indexed {index.ntotal} vectors of size {dim}.\")\n"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "745eb30e",
"metadata": {},
"outputs": [
{
"name": "stderr",
"output_type": "stream",
"text": [
"Device set to use cpu\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"a neural network\n"
]
}
],
"source": [
"# ==== 4. Load & Test the LLM ====\n",
"from transformers import AutoTokenizer, AutoModelForSeq2SeqLM, pipeline\n",
"\n",
"# 4.1) Use the correct Flan-T5 repo\n",
"MODEL_NAME = \"google/flan-t5-base\"\n",
"\n",
"# 4.2) Load tokenizer & model (requires that you ran `huggingface-cli login`)\n",
"tokenizer = AutoTokenizer.from_pretrained(MODEL_NAME)\n",
"model = AutoModelForSeq2SeqLM.from_pretrained(MODEL_NAME)\n",
"\n",
"# 4.3) Create a generation pipeline\n",
"qa_pipeline = pipeline(\n",
" \"text2text-generation\",\n",
" model=model,\n",
" tokenizer=tokenizer,\n",
" device=-1 # or 0 if you have a GPU\n",
")\n",
"\n",
"# 4.4) Quick sanity check\n",
"print(qa_pipeline(\"Question: What is retrieval-augmented generation? Answer:\", max_length=50)[0][\"generated_text\"])\n"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "70efc796",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Answer: Isaac Newton\n"
]
}
],
"source": [
"# ==== 5. Retrieval + Generation Function ====\n",
"def retrieve_and_answer(question: str, k: int = 5) -> str:\n",
" # 1) Embed the question\n",
" q_emb = embedder.encode([question], convert_to_numpy=True)\n",
" # 2) Retrieve top-k passages\n",
" distances, indices = index.search(q_emb, k)\n",
" # 3) Build a little context block\n",
" contexts = \"\\n\".join(\n",
" f\"Context {i+1}: {passages[idx][:200]}...\"\n",
" for i, idx in enumerate(indices[0])\n",
" )\n",
" # 4) Assemble prompt\n",
" prompt = (\n",
" \"You are a helpful QA assistant. \"\n",
" \"Use ONLY the following contexts to answer the question. \"\n",
" \"If the answer is not contained in the contexts, respond with \"\n",
" \"'Sorry, I don't know.'\\n\\n\"\n",
" f\"{contexts}\\n\"\n",
" f\"Question: {question}\\nAnswer:\"\n",
" )\n",
"\n",
" # 5) Generate and return\n",
" out = qa_pipeline(prompt, max_length=200, do_sample=False)\n",
" return out[0][\"generated_text\"]\n",
"\n",
"\n",
"# 5.1) Test it end-to-end\n",
"sample_q = \"Who conceptualized the theory of relativity?\"\n",
"print(\"Answer:\", retrieve_and_answer(sample_q))\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "a1476c3a",
"metadata": {},
"outputs": [],
"source": [
"import gradio as gr\n",
"\n",
"def chat_fn(user_message, history=None):\n",
" # Initialize history if needed\n",
" history = history or []\n",
" # 1) Record the user turn\n",
" history.append({\"role\": \"user\", \"content\": user_message})\n",
" # 2) Retrieve & generate\n",
" answer = retrieve_and_answer(user_message, k=5)\n",
" # 3) Record the assistant turn\n",
" history.append({\"role\": \"assistant\", \"content\": answer})\n",
" # 4) Return the full message list\n",
" return history\n",
"\n",
"# Launch with the new format\n",
"gr.ChatInterface(\n",
" fn=chat_fn,\n",
" type=\"messages\", # ← switch to messages!\n",
" title=\"🔍 RAG QA Demo\",\n",
" description=\"I only answer from retrieved contexts; otherwise I'll say 'Sorry, I don't know.'\"\n",
").launch(share=True) # ← add share=True if you want a public link\n"
]
},
{
"cell_type": "code",
"execution_count": 9,
"id": "78314cbb",
"metadata": {},
"outputs": [
{
"name": "stderr",
"output_type": "stream",
"text": [
"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\chat_interface.py:338: UserWarning: The 'tuples' format for chatbot messages is deprecated and will be removed in a future version of Gradio. Please set type='messages' instead, which uses openai-style 'role' and 'content' keys.\n",
" self.chatbot = Chatbot(\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"* Running on local URL: http://127.0.0.1:7861\n",
"* To create a public link, set `share=True` in `launch()`.\n"
]
},
{
"data": {
"text/html": [
"<div><iframe src=\"http://127.0.0.1:7861/\" width=\"100%\" height=\"500\" allow=\"autoplay; camera; microphone; clipboard-read; clipboard-write;\" frameborder=\"0\" allowfullscreen></iframe></div>"
],
"text/plain": [
"<IPython.core.display.HTML object>"
]
},
"metadata": {},
"output_type": "display_data"
},
{
"data": {
"text/plain": []
},
"execution_count": 9,
"metadata": {},
"output_type": "execute_result"
},
{
"name": "stderr",
"output_type": "stream",
"text": [
"Traceback (most recent call last):\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\queueing.py\", line 625, in process_events\n",
" response = await route_utils.call_process_api(\n",
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n",
" ...<5 lines>...\n",
" )\n",
" ^\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\route_utils.py\", line 322, in call_process_api\n",
" output = await app.get_blocks().process_api(\n",
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n",
" ...<11 lines>...\n",
" )\n",
" ^\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\blocks.py\", line 2146, in process_api\n",
" result = await self.call_function(\n",
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n",
" ...<8 lines>...\n",
" )\n",
" ^\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\blocks.py\", line 1662, in call_function\n",
" prediction = await fn(*processed_input)\n",
" ^^^^^^^^^^^^^^^^^^^^^^^^^^\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\utils.py\", line 851, in async_wrapper\n",
" response = await f(*args, **kwargs)\n",
" ^^^^^^^^^^^^^^^^^^^^^^^^\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\chat_interface.py\", line 884, in _submit_fn\n",
" history = self._append_message_to_history(response, history, \"assistant\")\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\chat_interface.py\", line 815, in _append_message_to_history\n",
" message_dicts = self._message_as_message_dict(message, role)\n",
" File \"c:\\Users\\victo\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\gradio\\chat_interface.py\", line 853, in _message_as_message_dict\n",
" for x in msg.get(\"files\", []):\n",
" ^^^^^^^\n",
"AttributeError: 'tuple' object has no attribute 'get'\n"
]
}
],
"source": [
"import gradio as gr\n",
"\n",
"gr.ChatInterface(\n",
" fn=chat_fn,\n",
" title=\"🔍 RAG QA Demo\",\n",
" description=(\n",
" \"Ask a question—I'll only answer if the info is in the retrieved contexts; \"\n",
" \"otherwise, I'll say “Sorry, I don't know.”\"\n",
" )\n",
").launch()\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "fc557ef9",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
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|