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GenAIExamples/AudioQnA/deprecated/langchain/redis/ingest.py
Sihan Chen b4d8e1a19b Add AudioQnA with GenAIComps (#311)
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---------

Signed-off-by: Spycsh <sihan.chen@intel.com>
Signed-off-by: Yue, Wenjiao <wenjiao.yue@intel.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: WenjiaoYue <wenjiao.yue@intel.com>
Co-authored-by: chen, suyue <suyue.chen@intel.com>
2024-06-25 23:37:57 +08:00

87 lines
2.8 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2024 Intel Corporation
# SPDX-License-Identifier: Apache-2.0
#
import io
import os
import numpy as np
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain_community.embeddings import HuggingFaceEmbeddings
from langchain_community.vectorstores import Redis
from PIL import Image
from rag_redis.config import EMBED_MODEL, INDEX_NAME, INDEX_SCHEMA, REDIS_URL
def pdf_loader(file_path):
try:
import easyocr
import fitz
except ImportError:
raise ImportError(
"`PyMuPDF` or 'easyocr' package is not found, please install it with "
"`pip install pymupdf or pip install easyocr.`"
)
doc = fitz.open(file_path)
reader = easyocr.Reader(["en"])
result = ""
for i in range(doc.page_count):
page = doc.load_page(i)
pagetext = page.get_text().strip()
if pagetext:
result = result + pagetext
if len(doc.get_page_images(i)) > 0:
for img in doc.get_page_images(i):
if img:
pageimg = ""
xref = img[0]
img_data = doc.extract_image(xref)
img_bytes = img_data["image"]
pil_image = Image.open(io.BytesIO(img_bytes))
img = np.array(pil_image)
img_result = reader.readtext(img, paragraph=True, detail=0)
pageimg = pageimg + ", ".join(img_result).strip()
if pageimg.endswith("!") or pageimg.endswith("?") or pageimg.endswith("."):
pass
else:
pageimg = pageimg + "."
result = result + pageimg
return result
def ingest_documents():
"""Ingest PDF to Redis from the data/ directory that
contains Edgar 10k filings data for Nike."""
# Load list of pdfs
company_name = "Nike"
data_path = "data/"
doc_path = [os.path.join(data_path, file) for file in os.listdir(data_path)][0]
print("Parsing 10k filing doc for NIKE", doc_path)
text_splitter = RecursiveCharacterTextSplitter(chunk_size=1500, chunk_overlap=100, add_start_index=True)
content = pdf_loader(doc_path)
chunks = text_splitter.split_text(content)
print("Done preprocessing. Created ", len(chunks), " chunks of the original pdf")
# Create vectorstore
embedder = HuggingFaceEmbeddings(model_name=EMBED_MODEL)
_ = Redis.from_texts(
# appending this little bit can sometimes help with semantic retrieval
# especially with multiple companies
texts=[f"Company: {company_name}. " + chunk for chunk in chunks],
embedding=embedder,
index_name=INDEX_NAME,
index_schema=INDEX_SCHEMA,
redis_url=REDIS_URL,
)
if __name__ == "__main__":
ingest_documents()