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import gradio as gr
from g4f import Provider, models
from langchain.llms.base import LLM
import asyncio
import nest_asyncio
from langchain.callbacks.manager import CallbackManager
from langchain.llms import LlamaCpp
from llama_index import ServiceContext, LLMPredictor, PromptHelper
from llama_index.text_splitter import TokenTextSplitter
from llama_index.node_parser import SimpleNodeParser
from langchain.embeddings import HuggingFaceEmbeddings, HuggingFaceInstructEmbeddings
from llama_index import SimpleDirectoryReader, VectorStoreIndex
from gradio import Interface
nest_asyncio.apply()
from huggingface_hub import hf_hub_download
model_name_or_path = "hlhr202/llama-7B-ggml-int4"
model_basename = "ggml-model-q4_0.bin" # the model is in bin format
model_path = hf_hub_download(repo_id=model_name_or_path, filename=model_basename)
n_gpu_layers = 40 # Change this value based on your model and your GPU VRAM pool.
n_batch = 256
embed_model = HuggingFaceInstructEmbeddings(model_name="hkunlp/instructor-xl",
model_kwargs={"device": "cpu"})
"""
node_parser = SimpleNodeParser.from_defaults(text_splitter=TokenTextSplitter(chunk_size=1024, chunk_overlap=20))
prompt_helper = PromptHelper(
context_window=4096,
num_output=256,
chunk_overlap_ratio=0.1,
chunk_size_limit=None
)
"""
from langchain_g4f import G4FLLM
async def main(question):
llm = LlamaCpp(
model_path=model_path, callbacks=[StreamingStdOutCallbackHandler()]
)
from llama_index.llms import LangChainLLM
llm = LangChainLLM(llm=llm)
service_context = ServiceContext.from_defaults(llm=llm,
embed_model=embed_model)
documents = SimpleDirectoryReader("data/").load_data()
index = VectorStoreIndex.from_documents(documents, service_context=service_context)
query_engine = index.as_query_engine(service_context=service_context)
response = query_engine.query(question)
print(response)
return response
iface = Interface(fn=main, inputs="text", outputs="text")
iface.launch()
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