From issues-return-101614-archive-asf-public=cust-asf.ponee.io@ignite.apache.org Tue Nov 19 13:00:02 2019 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id 2BACD180638 for ; Tue, 19 Nov 2019 14:00:02 +0100 (CET) Received: (qmail 61377 invoked by uid 500); 19 Nov 2019 13:00:01 -0000 Mailing-List: contact issues-help@ignite.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@ignite.apache.org Delivered-To: mailing list issues@ignite.apache.org Received: (qmail 61363 invoked by uid 99); 19 Nov 2019 13:00:01 -0000 Received: from mailrelay1-us-west.apache.org (HELO mailrelay1-us-west.apache.org) (209.188.14.139) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 19 Nov 2019 13:00:01 +0000 Received: from jira-he-de.apache.org (static.172.67.40.188.clients.your-server.de [188.40.67.172]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id CCFFEE2C65 for ; Tue, 19 Nov 2019 13:00:00 +0000 (UTC) Received: from jira-he-de.apache.org (localhost.localdomain [127.0.0.1]) by jira-he-de.apache.org (ASF Mail Server at jira-he-de.apache.org) with ESMTP id 4DEB97803FE for ; Tue, 19 Nov 2019 13:00:00 +0000 (UTC) Date: Tue, 19 Nov 2019 13:00:00 +0000 (UTC) From: "Alexey Zinoviev (Jira)" To: issues@ignite.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (IGNITE-9461) Implement random subspace method and provide an option to combine it with bagging 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/IGNITE-9461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Alexey Zinoviev updated IGNITE-9461: ------------------------------------ Affects Version/s: (was: 2.6) > Implement random subspace method and provide an option to combine it with bagging > --------------------------------------------------------------------------------- > > Key: IGNITE-9461 > URL: https://issues.apache.org/jira/browse/IGNITE-9461 > Project: Ignite > Issue Type: Task > Components: ml > Reporter: Oleg Ignatenko > Assignee: Alexey Zinoviev > Priority: Major > Fix For: 2.9 > > > Implement random subspace method (aka attribute bagging or feature bagging) to give ML API users more options to address overfitting. Also provide an option to combine this method with bagging. > References: > * [Wikipedia article|https://en.wikipedia.org/wiki/Random_subspace_method] {quote}Informally, this causes individual learners to not over-focus on features that appear highly predictive/descriptive in the training set, but fail to be as predictive for points outside that set. For this reason, random subspaces are an attractive choice for problems where the number of features is much larger than the number of training points, such as learning from fMRI data or gene expression data...{quote} > * [Combining Bagging and Random Subspaces to Create Better Ensembles|https://pdfs.semanticscholar.org/d38f/979ad85d59fc93058279010efc73a24a712c.pdf] > * [Bagging and the Random Subspace Method for Redundant Feature Spaces|https://link.springer.com/chapter/10.1007/3-540-48219-9_1] -- This message was sent by Atlassian Jira (v8.3.4#803005)