From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII X-Google-Thread: 11232c,3fd68bc06c32b870,start X-Google-Attributes: gid11232c,public X-Google-Thread: 103376,41100a78496a4c71 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-04-04 21:14:09 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed00.sul.t-online.de!t-online.de!fr.usenet-edu.net!usenet-edu.net!news.mailgate.org!mygate.mailgate.org!198.207.153.205!not-for-mail From: "Kent Paul Dolan" Newsgroups: comp.lang.ada,misc.misc Subject: SLOC-wars Date: Fri, 5 Apr 2002 05:14:09 +0000 (UTC) Organization: Mailgate.ORG Server - http://www.Mailgate.ORG Message-ID: References: NNTP-Posting-Host: 198.207.153.205 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: news.mailgate.org 1017973183 31122 198.207.153.205 (Fri Apr 5 07:14:08 2002) X-Complaints-To: abuse@mailgate.org NNTP-Posting-Date: Fri, 5 Apr 2002 05:14:09 +0000 (UTC) Injector-Info: news.mailgate.org; posting-host=198.207.153.205; posting-account=48257; posting-date=1017973183 User-Agent: Mailgate Web Server X-URL: http://mygate.mailgate.org/mynews/comp/comp.lang.ada/f6a580bb517ec9eced2eaa01cf9c9525.48257%40mygate.mailgate.org Xref: archiver1.google.com comp.lang.ada:22131 misc.misc:6114 Date: 2002-04-05T05:14:09+00:00 List-Id: "M�rio Amado Alves" wrote: > You're both right. I also did a study correlating program text metrics > and actual development cost in programmers*month. SLOC had the best > results, notably beating Halstead. It was a small project (10k SLOCs if > I remember correctly), but it was unbiased i.e. the programmers didn't > know about the metrics in advance. Well, but SLOC is predicting by hindsight, and it has been fairly well known since the 1960's that individual programmer's code output is fairly constant when measured in keystrokes, so that about as many lines per day of assembly as of APL can be delivered fully burdened. Thus, one would expect that SLOC or something like it fairly equivalent to keystrokes would be the best hindsight predictor of technologist-months of effort involved in completing a project or a component. But I thought (with no expertise here) that the goal of stuff like Halstead's metric was that you could estimate it at specification time, and do foresight forecasting with that estimate. I'd shudder to think what the accuracy of foresight guesses at SLOC from similar projects might accomplish in setting milestone dates and such. Thus, in comparing a tool useful primarily for hindsight forecasting to the detriment of one also useful for foresight forecasting, aren't you doing the apples versus oranges thing? xanthian. -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG