From issues-return-73156-archive-asf-public=cust-asf.ponee.io@commons.apache.org Mon Apr 1 22:09:02 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 [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 647F5180621 for ; Tue, 2 Apr 2019 00:09:02 +0200 (CEST) Received: (qmail 14473 invoked by uid 500); 1 Apr 2019 22:09:01 -0000 Mailing-List: contact issues-help@commons.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: issues@commons.apache.org Delivered-To: mailing list issues@commons.apache.org Received: (qmail 14459 invoked by uid 99); 1 Apr 2019 22:09:01 -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; Mon, 01 Apr 2019 22:09:01 +0000 Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id AEC3EE29DB for ; Mon, 1 Apr 2019 22:09:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 47FED24421 for ; Mon, 1 Apr 2019 22:09:00 +0000 (UTC) Date: Mon, 1 Apr 2019 22:09:00 +0000 (UTC) From: "Gilles (JIRA)" To: issues@commons.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (RNG-32) Implement more generators 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/RNG-32?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16807232#comment-16807232 ] Gilles commented on RNG-32: --------------------------- bq. Do you think working on this issue requires deep mathematical knowledge? No (we "only" port/implement existing algorithms; we do not try to design new RNGs). Unit tests are required to prove that the port is correct. See the "dev" ML archive for a [recent discussion|https://markmail.org/message/4cxdgtufj5chsp3m] with a GSoC candidate. > Implement more generators > ------------------------- > > Key: RNG-32 > URL: https://issues.apache.org/jira/browse/RNG-32 > Project: Commons RNG > Issue Type: Wish > Reporter: Gilles > Priority: Minor > Labels: contributors, gsoc2019, scope > Attachments: lsf.java > > > Commons RNG is focused on pure-Java implementations of standard deterministic generators. > Quite a few algorithms could be added, but priority is on fast generators that generate sequences of _pseudo-random_ numbers; i.e. the requirement is strong _uniformity_, but *not* strong _unpredictability_ (a.k.a. _true_ random numbers). > In particular, in Commons RNG, there is no provision for using an external entropy pool. > Beware that some well-known (and much used) algorithms have been proven to fail spectacularly on the uniformity requirement. > Would-be contributors should look at the {{commons-rng-core}} module for how to implement a generator, and at the {{commons-rng-examples}} module for how to test the uniformity requirement. -- This message was sent by Atlassian JIRA (v7.6.3#76005)