Return-Path: X-Original-To: apmail-mahout-dev-archive@www.apache.org Delivered-To: apmail-mahout-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 106201893D for ; Wed, 17 Jun 2015 19:00:22 +0000 (UTC) Received: (qmail 55698 invoked by uid 500); 17 Jun 2015 19:00:01 -0000 Delivered-To: apmail-mahout-dev-archive@mahout.apache.org Received: (qmail 55634 invoked by uid 500); 17 Jun 2015 19:00:01 -0000 Mailing-List: contact dev-help@mahout.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@mahout.apache.org Delivered-To: mailing list dev@mahout.apache.org Received: (qmail 55536 invoked by uid 99); 17 Jun 2015 19:00:01 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Jun 2015 19:00:01 +0000 Date: Wed, 17 Jun 2015 19:00:01 +0000 (UTC) From: "Dmitriy Lyubimov (JIRA)" To: dev@mahout.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (MAHOUT-1730) new mutable transposition view for in-core matrices. MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/MAHOUT-1730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Dmitriy Lyubimov updated MAHOUT-1730: ------------------------------------- Resolution: Fixed Status: Resolved (was: Patch Available) > new mutable transposition view for in-core matrices. > ---------------------------------------------------- > > Key: MAHOUT-1730 > URL: https://issues.apache.org/jira/browse/MAHOUT-1730 > Project: Mahout > Issue Type: Improvement > Reporter: Dmitriy Lyubimov > Assignee: Dmitriy Lyubimov > Fix For: 0.10.2 > > > in-core mxA.t rewrite with mostly two goals in mind: > (1) enable mutability , e.g. > for (col <- mxA.t) col := k > (2) translate matrix structural flavor for optimizers correctly. i.e. new SparseRowMatrix.t carries on as column-major structure. > Also it does unwrapping automatically, i.e. mxA.t.t eq mxA is true. > there are other smaller goals hit in this rewrite, e.g. various efficient assigns. > PR https://github.com/apache/mahout/pull/135 -- This message was sent by Atlassian JIRA (v6.3.4#6332)