<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Jul 29, 2014 at 5:24 PM, Boris Zbarsky <span dir="ltr"><<a href="mailto:bzbarsky@mit.edu" target="_blank">bzbarsky@mit.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">On 7/29/14, 6:50 AM, Rodrigo Rocha Gomes e Souza wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
It's reasonable to assume that backout rate is<br>
somehow proportional to million lines of code (MLOC)<br>
</blockquote>
<br></div>
Backout rate depends not just on size of codebase but also on number of checkins.<br></blockquote><div><br></div><div>That's a good point. If we define backout rate as backouts / checkins, then what you're saying is that, everything else equal, backouts should not be proportional to checkins, but to a function of the number of checkins (e.g., checkins^2), right?</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Let's assume that backout rate should<br>
be proportional to the square root of MLOC.<br>
</blockquote>
<br></div>
Why not the square? Or the log? I mean, there's no reason to assume it's linear, but why square root?</blockquote><div><br></div><div>I actually just picked the first sublinear function I could think about. I couldn't find any empirically tested formula linking backout rate to MLOC, and it's not my goal right now to find this link (maybe in the future).</div>
<div><br></div><div>[]s</div><div>Rodrigo</div></div></div></div>