Hello, Here is the presentation on deep learning with MADlib I gave last weekend at FOSDEM https://fosdem.org/2019/schedule/event/dl_parallel_db/
This work is related to https://issues.apache.org/jira/browse/MADLIB-1268 and other JIRAs If you are interested in contributing to this work, happy to have more folks involved. I think there is a lot of promise here for both the PostgreSQL and Greenplum communities. Frank
