Re: CM system overlap estimate

From: Ben Grodsky <>
Date: Mon, 2 Jul 2007 11:55:54 -0700


----- Original Message -----
From: Ben Ebert
To: Ben Grodsky; Jay Mairs
Sent: Mon Jul 02 11:46:36 2007
Subject: Re: CM system overlap estimate

I got a reply from Sujay as well, that estimate is not too far off from what he thought it should be. We'll probably still be dumping too much data on them for them to handle.
Sent from my BlackBerry Wireless Handheld

----- Original Message -----
From: Ben Grodsky
To: Ben Ebert; Jay Mairs
Sent: Mon Jul 02 11:43:40 2007
Subject: Fw: CM system overlap estimate

Let's see what happens....

----- Original Message -----
From: Markham, Aaron (NBC Universal) <>
To: Ben Grodsky; Doganaksoy, Necip (GE, Research) <>
Cc: Skinner, Andrew (NBC Universal) <>
Sent: Mon Jul 02 11:33:22 2007
Subject: RE: CM system overlap estimate

Thanks Ben. Necip, 90% overlap sounds like it would be good enough. Shall we proceed as is?



From: Ben Grodsky []
Sent: Friday, June 29, 2007 1:04 PM
To: Markham, Aaron (NBC Universal)
Cc: Skinner, Andrew (NBC Universal)
Subject: FW: CM system overlap estimate




Too funny. I just saw the e-mail from Andrew. Here's what we had to say.




From: Ben Grodsky
Sent: Fri 29-Jun-07 13:03
To: Skinner, Andrew (NBC Universal); Ben Ebert
Subject: RE: CM system overlap estimate



The fundamental problem is that we can't link the Protection System to the Data Collection system completely. We extrapolated from a sample of several of our nodes on the network and found a high percentage of overlap between the Protection and Data Collection systems -- in the 90%+ range. We ran these tests since the Tuesday following our phone call through this morning to extend the time frame to smooth out any inter-day or intra-day noise. This was a huge effort which required several of our development staff to run manual queries on each node at different times of the day, affecting each computer's Protection performance.



Ben Grodsky


From: Skinner, Andrew (NBC Universal) []
Sent: Thu 28-Jun-07 10:20
To: Ben Ebert
Cc: Ben Grodsky
Subject: CM system overlap estimate

Hi Ben,


Have you been able to run any tests to estimate how much overlap there is between what the countermeasure machines see? When can we expect this data?





Received on Fri Sep 14 2007 - 10:55:51 BST

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