LayoutLM - Data extraction from PDF documents

The automation of business documents is a central challenge in the digital strategy of Large enterprises, Insurers, Banks and the public sector. PDFs or scans and emails are one of the most commonly used document formats for exchanging information. But extracting data from PDFs or emails can be time-consuming.

Konfuzio offers an innovative learning solution with its AI-driven document processing platform that differentiates itself from the competition not only by using AI, but the latest technology. With Konfuzio, enterprises and software vendors efficiently extract data from a wide variety of documents, including PDFs, images, and other business documents.

Efficient data extraction with the AI-driven document processing platform.

The Konfuzio platform has a robust PDF conversion tool that converts PDF files to other formats such as, automatically separates documents or extracts information. This facilitates the extraction of data from the pages of the document. Also, Konfuzio platform can extract images and tables from PDFs, so you can quickly extract data points from specific pages of the document.

In addition, the Konfuzio document splitting feature helps make data extraction even more efficient. This tool allows you to split a document into several smaller files, each containing a specific subset of data. For example, you can split a large PDF file into several smaller files, each containing information about a specific category or section of the document's pages. This method simplifies the data extraction process and makes it more manageable.

Konfuzio's advanced text extraction tools can extract text from various document formats, including PDFs, Word files and Excel spreadsheets. These tools can quickly and accurately extract large amounts of text from file pages, making it easier to analyze and use the data. In addition, the Konfuzio platform can extract specific types of data, such as names, addresses and dates, using its NLP (Natural Language Processing) capabilities.

Separate and convert documents

In addition, Konfuzio's platform offers a page selection function that allows the user to select specific pages of a document for conversion. This feature is especially useful when dealing with long documents. Instead of converting the entire document, you can select specific pages and convert them to the desired format. This feature saves time and resources while giving you the data you need.

The first step to extracting data from documents is to convert them to a more manageable format. PDFs are one of the most commonly used formats for documents, but extracting data from them can be challenging. The Konfuzio platform provides a powerful PDF conversion tool that understands information PDFs visually and semantically, making data extraction easier. This feature can be helpful for large documents with multiple pages.

The Konfuzio document splitting tool allows you to split a document into several smaller files, each containing a specific subset of data. This feature simplifies data extraction from batch scans and makes them clearer. For example, you can split a large PDF document into several smaller files, each containing data about a specific category or section. This makes data extraction simpler and more manageable.

AI based extraction through semantic understanding

Konfuzio's platform also offers advanced text extraction tools that can extract text from various document formats, including PDFs, Word files and Excel spreadsheets. These tools can quickly and efficiently extract large amounts of text from documents, making it easier to analyze and use the data. In addition, the Konfuzio platform can extract specific types of data, such as names, addresses, and dates, using its natural language processing (NLP) capabilities.

LayoutLM is a powerful machine learning model that can help extract data from PDF documents. This model is specifically designed to understand the layout and structure of documents, including PDFs, and can extract data accurately and efficiently.

PDF Extraction

One of the most important features of LayoutLM is the ability to identify and recognize different types of document elements such as headings, paragraphs and tables. This makes it possible to extract data from specific areas of a PDF document, such as a table or a specific section of text.

In addition, LayoutLM can recognize different text styles and fonts, which makes it easier to extract data from documents with different fonts and font sizes. This feature is especially useful when dealing with PDF documents with different layouts and formatting.

LayoutLM also provides advanced image recognition capabilities that allow data to be extracted from images in a PDF document. For example, if a PDF document contains a chart or graph, LayoutLM can extract the data points and present them in a structured format.

In addition, LayoutLM is based on a pre-trained language model, which means that it can learn and adapt to different languages and writing styles. This makes it possible to extract data from documents written in different languages, including complex scripts such as Chinese, Arabic and Hebrew.

LayoutLM is especially exciting for Python developers because custom documents are annotated in Konfuzio and specially adapted models can be trained or adjusted by these data. In addition to the small data set FUNSD, one of our articles shows how to easily prepare a 5 times larger data set with Konfuzio: See FUNSD+.

A good overview of the literature and implementation in Python is provided by the following video:

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LayoutLM's capabilities make it a valuable tool for data extraction from PDF documents. By using its advanced features, it is possible to extract data from different types of PDF documents quickly and accurately. LayoutLM can be used in conjunction with other tools and software to streamline and simplify the data extraction process.

Development of custom PDF extraction in Python

To use the KonfuzioPython SDK to build your own PDF extraction pipelines, you can follow the steps below:

  1. Install the konfuzio_sdk package with pip:
!pip install konfuzio-sdk
  1. Import the required packages:
import os
import sys
import konfuzio_sdk
from konfuzio_sdk.data import Project
from konfuzio_sdk.trainer.information_extraction import RFExtractionAI
from konfuzio_sdk.tokenizer.regex import WhitespaceTokenizer
from konfuzio_sdk.api import upload_ai_model
  1. Initialize the Konfuzio project:
from tests.variables import OFFLINE_PROJECT, TEST_DOCUMENT_ID
project = Project(id_=None, project_folder=OFFLINE_PROJECT)
  1. Set the category you want to edit:
category = project.get_category_by_id(63)
  1. Initialize the training pipeline, in this case we use the RFExtractionAI class:
pipeline = RFExtractionAI(use_separate_labels=True)
pipeline.category = category
  1. Set the pipeline attribute test_documents to be used later for evaluating the model:
pipeline.test_documents = category.test_documents()
  1. Retrieve all documents in the category:
documents = category.documents()
  1. Train the model using the documents and pipeline:
pipeline.fit(documents)
  1. Extract information from a new PDF file or process documents uploaded to the Konfuzio server.
text = "..."
document = category.create_document(text, filename="test.pdf")
pipeline.process_document(document)
annotations = document.annotations()

The Konfuzio Python SDK also allows you to upload your trained models to the Konfuzio platform by using the upload_ai_model Call function.

Extraction of data - Conclusion

Finally, Konfuzio's platform offers advanced image extraction tools. These tools can extract images from various document formats, including PDFs, Word files and Excel spreadsheets. By extracting images from the pages of the file, you can gain valuable insights from charts, tables and other types of visual data.

In summary, Konfuzio's AI-powered document processing platform offers several features that help extract data from files and pages quickly and efficiently. PDF conversion tools, document splitting software, text extraction tools, page selection features, and image extraction tools are just some of the features that Konfuzio offers to simplify and streamline the data extraction process. With Konfuzio's platform, you can save time and resources while gaining valuable insights from your files and pages.

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Samuel Knoche Avatar

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