Cognifest NYC 2017: Fallon Chen, Featran77

ai.bythebay.io Nov 2025, Oakland, full-stack AI conference Scale By the Bay 2019 is held on November 13-15 in sunny Oakland, California, on the shores of Lake Merritt: https://scale.bythebay.io. Join us! ----- Generic Feature Transformer for Data Pipelines Featran, a.k.a. Feature Transformer, Featran77 or F77, is a generic feature engineering library for Scala data pipeline frameworks, including Scio, Spark, Scalding and Flink. We'll talk about the design and implementation of the library, including uses of Algebird Semigroups, Aggregators, Breeze, and Scalacheck. We'll also cover other relevant topics that makes our data/ML pipelines scalable and type safe.