September 2011
Intermediate to advanced
612 pages
15h 48m
Japanese
Content preview from Making Software ―エビデンスが変えるソフトウェア開発
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
169
修正コストのデータからアーキテクティングの価値について学べること
ル」とを掛け算することで求めています。たとえば、「非常に低い」グループの場合、前者が
5%
、後者が
0.3
なので、これらを掛けた値
1.5%
がこの値になります。
投資コストの増分
投資コストの増分「
RESL
に投資したコストの割合（
%
）」が
1
つ前のレベルから
%
値でどれだ
け増えたかの差を表しています。たとえば、「低い」グループの場合、「
RESL
に投資したコス
トの割合（
%
）」はこのレベルが
4%
、「非常に低い」レベルが
1.5%
ですから、これらの差
2.5%
がこの値となります。
手戻り工数の係数の指数部分
161
のプロジェクトから回帰分析で求めた、ソフトウェアプロジェクトの工数に対して
RESL
因子が持つ効果の指数部分です。
表の残りでは、システムの規模を
4
段階に（
10SLOC
から
10,000KSLOC
まで）区分し、その規模の
プロジェクトに関する
ROI
をそれぞれの
RESL
評価レベルごとに計算しています。その計算のしかた
は次の通りです。
工数の追加量（%）
「手戻り工数の係数の指数部分」（
1.0707
など）をシステム規模（
10KSLOC
など）に適用し、そ
れによって増えた工数を計算します。たとえば、
10KSLOC
のプロジェクトで
RESL
評価レベ
ルが「非常に低い」に相当するグループでは、この値は次のように計算されます。
利得の増分
「工数の追加量（
%
）」が
1
つ前のレベルから
%
値でどれだけ減ったかの差を表しています。た
とえば
100KSLOC
のプロジェクトで ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.