khannaekta opened a new pull request #390: DL: Improve minibatch performance by using array_cat URL: https://github.com/apache/madlib/pull/390 JIRA: MADLIB-1334 The deep learning specific minibatch preprocessor was using a custom array concat function. This PR replaces it with the Postgres built-in `array_cat()` function since it was performing better.
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