Thank you to Rahul Iyer from Pivotal for contributing to the software and to this article. Path functions are a powerful capability in the data science toolkit, and they are now available in the newest release of the open source Apache MADlib (incubating) library. For example, path functions can be used to reason over website, shopping cart, and customer support clickstreams to identify the golden paths to purchase, multi-channel promotion effectiveness, or customer churn. In addition, they can be used in predictive analytics use cases, like analyzing millions of sensor logs from cars or other machines to identify common patterns in part failure. These scenarios can also improve safety and substantially lower operating costs.