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when toggle format what by license comment
Mar 16, 2010 at 14:33 comment added Douglas Zare The last line of my answer gave the same construction. My $B_i$ is your $1-Y_i$.
Mar 15, 2010 at 21:19 history edited Did CC BY-SA 2.5
added 2 characters in body; added 51 characters in body
Mar 15, 2010 at 21:02 history answered Did CC BY-SA 2.5