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#########################################################################################
# Title: Gradio Interface to LLM-chatbot with RAG-funcionality and ChromaDB on HF-Hub
# Author: Andreas Fischer
# Date: December 29th, 2023
# Last update: December 30th, 2023
##########################################################################################
# Chroma-DB
#-----------
import os
import chromadb
dbPath="/home/af/Schreibtisch/gradio/Chroma/db"
if(os.path.exists(dbPath)==False):
dbPath="/home/user/app/db"
print(dbPath)
#client = chromadb.Client()
path=dbPath
client = chromadb.PersistentClient(path=path)
print(client.heartbeat())
print(client.get_version())
print(client.list_collections())
from chromadb.utils import embedding_functions
default_ef = embedding_functions.DefaultEmbeddingFunction()
sentence_transformer_ef = embedding_functions.SentenceTransformerEmbeddingFunction(model_name="T-Systems-onsite/cross-en-de-roberta-sentence-transformer")
#instructor_ef = embedding_functions.InstructorEmbeddingFunction(model_name="hkunlp/instructor-large", device="cuda")
print(str(client.list_collections()))
global collection
if("name=ChromaDB1" in str(client.list_collections())):
print("ChromaDB1 found!")
collection = client.get_collection(name="ChromaDB1", embedding_function=sentence_transformer_ef)
else:
print("ChromaDB1 created!")
collection = client.create_collection(
"ChromaDB1",
embedding_function=sentence_transformer_ef,
metadata={"hnsw:space": "cosine"})
collection.add(
documents=["The meaning of life is to love.", "This is a sentence", "This is a sentence too"],
metadatas=[{"source": "notion"}, {"source": "google-docs"}, {"source": "google-docs"}],
ids=["doc1", "doc2", "doc3"],
)
print("Database ready!")
print(collection.count())
# Model
#-------
from huggingface_hub import InferenceClient
import gradio as gr
client = InferenceClient(
"mistralai/Mixtral-8x7B-Instruct-v0.1"
#"mistralai/Mistral-7B-Instruct-v0.1"
)
# Gradio-GUI
#------------
import gradio as gr
import json
def format_prompt(message, history):
prompt = "<s>"
for user_prompt, bot_response in history:
prompt += f"[INST] {user_prompt} [/INST]"
prompt += f" {bot_response}</s> "
prompt += f"[INST] {message} [/INST]"
return prompt
def response(
prompt, history, temperature=0.9, max_new_tokens=500, top_p=0.95, repetition_penalty=1.0,
):
temperature = float(temperature)
if temperature < 1e-2: temperature = 1e-2
top_p = float(top_p)
generate_kwargs = dict(
temperature=temperature,
max_new_tokens=max_new_tokens,
top_p=top_p,
repetition_penalty=repetition_penalty,
do_sample=True,
seed=42,
)
addon=""
results=collection.query(
query_texts=[prompt],
n_results=2,
#where={"source": "google-docs"}
#where_document={"$contains":"search_string"}
)
dists=["<small>(relevance: "+str(round((1-d)*100)/100)+";" for d in results['distances'][0]]
sources=["source: "+s["source"]+")</small>" for s in results['metadatas'][0]]
results=results['documents'][0]
combination = zip(results,dists,sources)
combination = [' '.join(triplets) for triplets in combination]
print(combination)
if(len(results)>1):
addon=" Bitte berücksichtige bei deiner Antwort ggf. folgende Auszüge aus unserer Datenbank, sofern sie für die Antwort erforderlich sind. Beantworte die Frage knapp und präzise. Ignoriere unpassende Datenbank-Auszüge OHNE sie zu kommentieren, zu erwähnen oder aufzulisten:\n"+"\n".join(results)
system="Du bist ein KI-basiertes Assistenzsystem."+addon+"\n\nUser-Anliegen:"
#body={"prompt":system+"### Instruktion:\n"+message+"\n\n### Antwort:","max_tokens":500, "echo":"False","stream":"True"} #e.g. SauerkrautLM
formatted_prompt = format_prompt(system+"\n"+prompt, history)
stream = client.text_generation(formatted_prompt, **generate_kwargs, stream=True, details=True, return_full_text=False)
output = ""
for response in stream:
output += response.token.text
yield output
output=output+"\n\n<br><details open><summary><strong>Sources</strong></summary><br><ul>"+ "".join(["<li>" + s + "</li>" for s in combination])+"</ul></details>"
yield output
gr.ChatInterface(response, chatbot=gr.Chatbot(render_markdown=True),title="RAG-Interface to the Hugging Face Hub").queue().launch(share=True) #False, server_name="0.0.0.0", server_port=7864)
print("Interface up and running!") |