deepmatcher

DeepMatcher

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DeepMatcher is a Python package for performing entity and text matching using deep learning. It provides built-in neural networks and utilities that enable you to train and apply state-of-the-art deep learning models for entity matching in less than 10 lines of code. The models are also easily customizable - the modular design allows any subcomponent to be altered or swapped out for a custom implementation.

As an example, given labeled tuple pairs such as the following:

.. image:: https://raw.githubusercontent.com/anhaidgroup/deepmatcher/master/docs/source/_static/match_input_ex.png

DeepMatcher uses labeled tuple pairs and trains a neural network to perform matching, i.e., to predict match / non-match labels. The trained network can then be used to obtain labels for unlabeled tuple pairs.

Paper and Data

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For details on the architecture of the models used, take a look at our paper Deep Learning for Entity Matching_ (SIGMOD '18). All public datasets used in the paper can be downloaded from the datasets page <Datasets.md>__.

Quick Start: DeepMatcher in 30 seconds

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There are four main steps in using DeepMatcher:

1. Data processing: Load and process labeled training, validation and test CSV data.

.. code-block:: python

import deepmatcher as dm train, validation, test = dm.data.process(path='data_directory', train='train.csv', validation='validation.csv', test='test.csv')

1. Model definition: Specify neural network architecture. Uses the built-in hybrid model (as discussed in section 4.4 of our paper <http://pages.cs.wisc.edu/~anhai/papers1/deepmatcher-sigmod18.pdf>__) by default. Can be customized to your heart's desire.

.. code-block:: python

model = dm.MatchingModel()

1. Model training: Train neural network.

.. code-block:: python

model.run_train(train, validation, best_save_path='best_model.pth')

1. Application: Evaluate model on test set and apply to unlabeled data.

.. code-block:: python

model.run_eval(test)

unlabeled = dm.data.process_unlabeled(path='data_directory/unlabeled.csv', trained_model=model) model.run_prediction(unlabeled)

Installation

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We currently support only Python versions 3.5+. Installing using pip is recommended:

.. code-block::

pip install deepmatcher

Tutorials

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Using DeepMatcher:

1. Getting Started_: A more in-depth guide to help you get familiar with the basics of using DeepMatcher.
2. Data Processing_: Advanced guide on what data processing involves and how to customize it.
3. Matching Models_: Advanced guide on neural network architecture for entity matching and how to customize it.

Entity Matching Workflow:

End to End Entity Matching: A guide to develop a complete entity matching workflow. The tutorial discusses how to use DeepMatcher with Magellan to perform blocking, sampling, labeling and matching to obtain matching tuple pairs from two tables.

DeepMatcher for other matching tasks:

Question Answering with DeepMatcher: A tutorial on how to use DeepMatcher for question answering. Specifically, we will look at WikiQA, a benchmark dataset for the task of Answer Selection.

API Reference

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API docs are here_.

Support

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Take a look at the FAQ <FAQ.md>__ for common issues. If you run into any issues or have questions not answered in the FAQ, please file GitHub issues_ and we will address them asap.

The Team

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DeepMatcher was developed by University of Wisconsin-Madison grad students Sidharth Mudgal and Han Li, under the supervision of Prof. AnHai Doan and Prof. Theodoros Rekatsinas.

.. _Deep Learning for Entity Matching: http://pages.cs.wisc.edu/~anhai/papers1/deepmatcher-sigmod18.pdf .. _Prof. AnHai Doan's data repository: https://sites.google.com/site/anhaidgroup/useful-stuff/data .. _Magellan: https://sites.google.com/site/anhaidgroup/projects/magellan .. _Getting Started: https://nbviewer.jupyter.org/github/anhaidgroup/deepmatcher/blob/master/examples/getting_started.ipynb .. _Data Processing: https://nbviewer.jupyter.org/github/anhaidgroup/deepmatcher/blob/master/examples/data_processing.ipynb .. _Matching Models: https://nbviewer.jupyter.org/github/anhaidgroup/deepmatcher/blob/master/examples/matching_models.ipynb .. _End to End Entity Matching: https://nbviewer.jupyter.org/github/anhaidgroup/deepmatcher/blob/master/examples/end_to_end_em.ipynb .. _are here: https://anhaidgroup.github.io/deepmatcher/html/ .. _Question Answering with DeepMatcher: https://nbviewer.jupyter.org/github/anhaidgroup/deepmatcher/blob/master/examples/question_answering.ipynb .. _WikiQA: https://aclweb.org/anthology/D15-1237 .. _file GitHub issues: https://github.com/anhaidgroup/deepmatcher/issues