TensorFlow Hub (also styled TF Hub) is an open-source machine learning library and online repository that provides TensorFlow model components, called modules.
It is maintained by Google as part of the TensorFlow ecosystem and allows developers to discover, publish, and reuse pretrained models for tasks such as computer vision, natural language processing, and transfer learning.
TensorFlow Hub provides a central platform where developers and researchers can access pre-trained models and integrate them directly into TensorFlow workflows. Each module encapsulates a computation graph and its trained weights, with standardized input and output signatures. Modules can be loaded using the <code>hub.load()</code> function or through Keras integration via <code>hub.KerasLayer</code>, enabling users to perform transfer learning or feature extraction.
TensorFlow Hub was announced by Google in March 2018, with the first public version released shortly after. Its introduction coincided with the growing adoption of transfer learning techniques and the need for standardized model packaging. Over time, the hub expanded to include models such as the BERT family, MobileNet, EfficientNet, and the Universal Sentence Encoder.
In 2020, research on âÂÂRegret selection in TensorFlow Hubâ explored the problem of identifying optimal models for downstream tasks given a large repository of alternatives.
TensorFlow Hub hosts a variety of models across machine learning domains:
Modules are widely used in education, academic research, and industry for prototyping and production deployment.