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From: Ted Dunning <ted.dunning@gmail.com>
Date: Thu, 13 Dec 2012 06:58:34 -0800
Message-ID: <CAJwFCa2zX4NeLoNEkqpa_aHGiOvKJ0CCXuV1LXmUTEMvhNgc6Q@mail.gmail.com>
Subject: Re: [math] correlation analysis with NaNs
To: Commons Users List <user@commons.apache.org>
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This is a nice way to allow various conventions.  Sometimes -1 might be the
right value.  Other times a more principled value like NaN might be
reasonable.

My proposal would be that for every algorithm that is able to handle
>> missing data, we provide an argument (to constructors) that specifies the
>> "double" value that represents a missing value.
>>
>

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