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Simone Robutti commented on FLINK-3919: --------------------------------------- Umh, probably you're right. I checked breeze and they use addition for matrix addition and sum for element-wise sum. > Distributed Linear Algebra: row-based matrix > -------------------------------------------- > > Key: FLINK-3919 > URL: https://issues.apache.org/jira/browse/FLINK-3919 > Project: Flink > Issue Type: New Feature > Components: Machine Learning Library > Reporter: Simone Robutti > Assignee: Simone Robutti > > Distributed matrix implementation as a DataSet of IndexedRow and related > operations -- This message was sent by Atlassian JIRA (v6.3.4#6332)