A modular active learning framework for Python built on scikit-learn, enabling rapid creation of custom workflows.
modAL is a modular active learning framework for Python that helps developers reduce the cost of labeling data by intelligently selecting the most informative instances for manual annotation. Built on top of scikit-learn, it enables rapid prototyping and customization of active learning workflows for both classification and regression tasks.
Data scientists and machine learning engineers working with limited labeled datasets who need to optimize labeling efforts and improve model performance efficiently.
Developers choose modAL for its flexibility and ease of integration with existing scikit-learn and Keras models, allowing them to design custom query strategies and uncertainty measures without being locked into predefined algorithms.
A modular active learning framework for Python
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Built directly on scikit-learn, modAL allows instant use of popular estimators like RandomForestClassifier and GaussianProcessRegressor, as shown in the initialization example with just a few lines of code.
Users can easily swap between built-in strategies like entropy sampling or implement custom ones with simple functions, demonstrated in the 'Replacing parts' section where a random sampling strategy is defined in a few lines.
Extends beyond classification to regression tasks, with tailored examples using Gaussian Processes and custom uncertainty measures for querying, as illustrated in the active regression workflow.
Integrates with Keras models for deep learning-based active learning, mentioned in the features and supported through examples, enabling seamless use with neural networks.
The modular design means users must write their own query strategies and uncertainty measures for advanced or novel algorithms, which can increase development time compared to libraries with more built-in functionality.
Focuses on flexibility over pre-built solutions, so common needs like visualization or batch querying aren't included out-of-the-box, requiring additional coding or integration with other libraries.
Tightly coupled with the scikit-learn ecosystem, which may limit seamless use with other ML frameworks like PyTorch without extra wrapping or adaptation efforts.