Publishing and Serving Machine Learning Models with DLHub

In this paper we introduce the Data and Learning Hub for Science (DLHub). DLHub serves as a nexus for publishing, sharing, discovering, and reusing machine learning models. It provides a flexible publication platform that enables researchers to describe and deposit models by associating publication and model-specific metadata and assigning a persistent identifier for subsequent citation. DLHub also supports scalable model inference, allowing researchers to execute inference tasks using a distributed execution engine, containerized models, and Kubernetes. Here we describe DLHub and present four scientific use cases that illustrate how DLHub can be used to reliably, efficiently, and scalably integrate ML into scientific processes.