Path: csiph.com!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!newsfeed.eweka.nl!eweka.nl!feeder3.eweka.nl!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: UNSURE 0.308 X-Spam-Level: *** X-Spam-Evidence: '*H*': 0.55; '*S*': 0.16; 'calculating': 0.09; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'wrote:': 0.18; 'wed,': 0.18; 'algorithms.': 0.24; 'regardless': 0.24; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'message- id:@mail.gmail.com': 0.30; "d'aprano": 0.31; 'steven': 0.31; 'yes.': 0.31; 'received:google.com': 0.35; 'useful': 0.36; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'easy': 0.60; 'algorithms': 0.60; "you're": 0.61; 'fact,': 0.69; 'jul': 0.74; 'algorithm,': 0.84; 'reminder:': 0.84; 'average': 0.93; '2013': 0.98 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=De76+3wI1ofya/XoPzNXyGG1ovFqlhqekH11vet9ELs=; b=0rDPLiDIrSp13LyEQY0SEexKxqe6x0T1rRsxFWgCFL2u4koBKlQ5rY8tUDukdQvrIh tDwUtxIzeVxWERoWMDZXmN1s7oYW6LAv/uFH2v8ef1scHc9qBe9bVLs4RMQPzpM9xgTw hC9m/mx158SCTn8dusd1GvuptFfQhCNna9TxR2fkaC4XDVDIb8xtFi1UiP5vd7FtNdtv OrMn7z3Q5H0WWNEMZJvW5T1nIqww6hMxJmWEr65ZQqk8EDU/76fMBi2NEvamfG1Cm425 m0cgAMXDi/8mJhbt9+UByYtFAuK8LEkol08AzluV+6OTfbXxhMvHfbv5YajfVhVo+5bE zrRQ== MIME-Version: 1.0 X-Received: by 10.58.214.105 with SMTP id nz9mr12017440vec.58.1372811161474; Tue, 02 Jul 2013 17:26:01 -0700 (PDT) In-Reply-To: <51d36dd2$0$29999$c3e8da3$5496439d@news.astraweb.com> References: <51d36dd2$0$29999$c3e8da3$5496439d@news.astraweb.com> Date: Wed, 3 Jul 2013 10:26:01 +1000 Subject: Re: how to calculate reputation From: Chris Angelico To: python-list@python.org Content-Type: text/plain; charset=ISO-8859-1 X-Mailman-Approved-At: Wed, 03 Jul 2013 09:11:26 +0200 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 11 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1372835488 news.xs4all.nl 15942 [2001:888:2000:d::a6]:56534 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:49707 On Wed, Jul 3, 2013 at 10:18 AM, Steven D'Aprano wrote: > It's very easy to come up with lousy algorithms for calculating > reputation, much harder to come up with good algorithms. Yes. Reminder: Don't just average your users' ratings. http://xkcd.com/937/ In fact, mere upvotes and downvotes mightn't be that useful regardless of algorithm, depending on what you're doing. ChrisA