Github user myui commented on a diff in the pull request:
https://github.com/apache/incubator-hivemall/pull/71#discussion_r112865163
--- Diff: core/src/main/java/hivemall/utils/math/MathUtils.java ---
@@ -401,4 +401,13 @@ public static double logsumexp(@Nonnull final double[]
arr, final double max) {
return Math.log(logsumexp) + max;
}
+ @Nonnull
+ public static float[] normalize(@Nonnull final float[] arr) {
--- End diff --
`sum` is l1norm? Then, remove this to `l1normalize`.
`l1norm` should be the sum of the **absolute** values of the columns.
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