rag_project / app.py
sashamn's picture
minor fix
a60674e
"""
Credit to Derek Thomas, derek@huggingface.co
"""
import subprocess
subprocess.run(["pip", "install", "--upgrade", "transformers[torch,sentencepiece]==4.34.1"])
import logging
from pathlib import Path
from time import perf_counter
import gradio as gr
from jinja2 import Environment, FileSystemLoader
from backend.query_llm import generate_hf, generate_openai
from backend.semantic_search import tables, retrievers, cross_model
VECTOR_COLUMN_NAME = "embeddings"
TEXT_COLUMN_NAME = "text"
proj_dir = Path(__file__).parent
# Setting up the logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
# Set up the template environment with the templates directory
env = Environment(loader=FileSystemLoader(proj_dir / 'templates'))
# Load the templates directly from the environment
template = env.get_template('template.j2')
template_html = env.get_template('template_html.j2')
# Examples
examples = ['What is the capital of China?',
'Why is the sky blue?',
'Who won the mens world cup in 2014?', ]
def add_text(history, text):
history = [] if history is None else history
history = history + [(text, None)]
return history, gr.Textbox(value="", interactive=False)
def bot(history, api_kind, use_cross_model, model_name, chunking, data):
top_k_rank = 10
top_k_return = 4
num_documents = top_k_rank if use_cross_model == 'Yes' else top_k_return
query = history[-1][0]
if not query:
gr.Warning("Please submit a non-empty string as a prompt")
raise ValueError("Empty string was submitted")
logger.warning('Retrieving documents...')
# Retrieve documents relevant to query
document_start = perf_counter()
table_name = f"{model_name}_{chunking}_extended" if data == "All" else f"{model_name}_{chunking}"
table = tables[table_name]
retriever = retrievers[model_name]
query_vec = retriever.encode(query)
documents = table.search(query_vec, vector_column_name=VECTOR_COLUMN_NAME).limit(num_documents).to_list()
documents = [doc[TEXT_COLUMN_NAME] for doc in documents]
if use_cross_model == 'Yes':
cross_model_inputs = [[query, passage] for passage in documents]
scores = cross_model.predict(cross_model_inputs)
results = [{'input': inp, 'score': score} for inp, score in zip(cross_model_inputs, scores)]
results = sorted(results, key=lambda x: x['score'], reverse=True)
documents_final = [x['input'][1] for x in results]
documents = documents_final[:top_k_return]
document_time = perf_counter() - document_start
logger.warning(f'Finished Retrieving documents in {round(document_time, 2)} seconds...')
# Create Prompt
prompt = template.render(documents=documents, query=query)
prompt_html = template_html.render(documents=documents, query=query)
if api_kind == "Mistral-7B-Instruct":
generate_fn = generate_hf
elif api_kind == "gpt-3.5":
generate_fn = lambda *args, **kwargs: generate_openai(*args, **kwargs, model="gpt-3.5-turbo-1106")
elif api_kind == "gpt-4":
generate_fn = lambda *args, **kwargs: generate_openai(*args, **kwargs, model="gpt-4-1106-preview")
elif api_kind is None:
gr.Warning("API name was not provided")
raise ValueError("API name was not provided")
else:
gr.Warning(f"API {api_kind} is not supported")
raise ValueError(f"API {api_kind} is not supported")
history[-1][1] = ""
for character in generate_fn(prompt, history[:-1]):
history[-1][1] = character
yield history, prompt_html
with gr.Blocks() as demo:
chatbot = gr.Chatbot(
[],
elem_id="chatbot",
avatar_images=('https://aui.atlassian.com/aui/8.8/docs/images/avatar-person.svg',
'https://huggingface.co/datasets/huggingface/brand-assets/resolve/main/hf-logo.svg'),
bubble_full_width=False,
show_copy_button=True,
show_share_button=True,
)
with gr.Row():
txt = gr.Textbox(
scale=3,
show_label=False,
placeholder="Enter text and press enter",
container=False,
)
txt_btn = gr.Button(value="Submit text", scale=1)
api_kind = gr.Radio(
label="API",
choices=["Mistral-7B-Instruct",
"gpt-3.5",
"gpt-4"],
value="Mistral-7B-Instruct")
use_cross_model = gr.Radio(label="Re-ranking", choices=["Yes", "No"], value="Yes")
model_names = list(retrievers.keys())
model_name = gr.Radio(label="Retriever model", choices=model_names, value=model_names[0])
chunking = gr.Radio(label="Chunking strategy", choices=["Heading", "Lines"], value="Heading")
data = gr.Radio(label="Use documents", choices=["Transformers", "All"], value="Transformers")
prompt_html = gr.HTML()
# Turn off interactivity while generating if you click
txt_msg = txt_btn.click(add_text, [chatbot, txt], [chatbot, txt], queue=False).then(
bot, [chatbot, api_kind, use_cross_model, model_name, chunking, data], [chatbot, prompt_html])
# Turn it back on
txt_msg.then(lambda: gr.Textbox(interactive=True), None, [txt], queue=False)
# Turn off interactivity while generating if you hit enter
txt_msg = txt.submit(add_text, [chatbot, txt], [chatbot, txt], queue=False).then(
bot, [chatbot, api_kind, use_cross_model, model_name, chunking, data], [chatbot, prompt_html])
# Turn it back on
txt_msg.then(lambda: gr.Textbox(interactive=True), None, [txt], queue=False)
# Examples
gr.Examples(examples, txt)
demo.queue()
demo.launch(debug=True)