Labelling platform for text using distant supervision

Overview

Welcome to the DataQA platform

With DataQA, you can label unstructured text documents using rule-based distant supervision. You can use it to:

  • manually label all documents,
  • use a search engine to explore your data and label at the same time,
  • label a sample of some documents with an imbalanced class distribution,
  • create a baseline high-precision system for NER or for classification.

Documentation at: https://dataqa.ai/docs/.

Screenshots

Classify or extract named entities from your text:

Search and label your data:

Use rules & heuristics to automatically label your documents:

Installation

Pre-requisites:

  • Python 3.6, 3.7, 3.8 and 3.9
  • (Recommended) start a new python virtual environment
  • Update your pip pip install -U pip
  • Tested on backend: MacOSX, Ubuntu. Tested on browser: Chrome.

Installation

To install the package from pypi:

Python versions 3.6, 3.7

  • pip install dataqa

Python versions 3.8, 3.9

  • When using python 3.8 or 3.9, need to run pip install networkx==2.5 after installing dataqa (ignore error message complaining about snorkel's dependencies). This is due to an error in snorkel's dependencies.

Usage

Start the application

In the terminal, type dataqa run. Wait a few minutes initially, as it takes some minutes to start everything up.

Doing this will run a server locally and open a browser window at port 5000. If the application does not open the browser automatically, open localhost:5000 in your browser. You need to keep the terminal open.

To quit the application, simply do Ctr-C in the terminal. To resume the application, type dataqa run. Doing so will create a folder at $HOME/.dataqa_data.

Does this tool need an internet connection?

Only the first time you run it, it will need to download a language model from the internet. This is the only time it will need an internet connection. There is ongoing work to remove this constraint, so it can be run locally without any internet.

No data will ever leave your local machine.

Uploading data

The text file needs to be a csv file in utf-8 encoding of up to 30MB with a column named "text" which contains the main text. The other columns will be ignored.

This step is running some analysis on your text and might take up to 5 minutes.

Uninstall

In the terminal:

  • dataqa uninstall: this deletes your local application data in the home directory in the folder .dataqa_data. It will prompt the user before deleting.
  • pip uninstall dataqa

Troubleshooting

Usage

If the project data does not load, try to go to the homepage and http://localhost:5000 and navigate to the project from there.

Try running dataqa test to get more information about the error, and bug reports are very welcome!

Development

To test the application, it is possible to upload a text that contains a column "__LABEL__". The ground-truth labels will then be displayed during labelling and the real performance will be shown in the performance table between brackets.

Packaging

Using setuptools

To create the wheel file:

  • Make sure there are no stale files: rm -rf src/dataqa.egg-info; rm -rf build/;
  • python setup.py sdist bdist_wheel

Contact

For any feedback, please contact us at [email protected].

Owner
Democratising finding insights from unstructured data.
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