Tag: false positives

  • Comment Spam Resumes

    Have spammers figured out how to pick reCAPTCHA‘s lock? All of a sudden I am getting hundreds of comment spam blocked by Akismet. When I added reCAPTCHA, it dropped to a few a month. Now 409 in a week. Guess this is why layers of security are good. UPDATE: Scanned through for false positives. The […]

  • TED Talk: Picking apart the puzzle of racism in elections

    By Nate Silver A less than convincing point… The list of states with voters reporting a racial bias only well matches the Obama-Clinton difference map because Nate draws the audience to the states he’s picking on: Arkansas, Louisiana, Tennessee, Kentucky, and West Virginia (5 hits). He totally ignores the strong race bias in South Carolina, […]

  • Session Oddities

    One of the clients we host complained about losing their session. Blackboard recommended we switch how our load balancer is handling the session persistence. Before agreeing to do that, we decided to use Blackboard’s script to determine if there is a problem before trying to fix something which may or may not exist. An acceptable […]

  • BbWorld Presentation Redux Part II – Monitoring

    Much of what I might write in these posts about Vista is knowledge accumulated from the efforts of my coworkers. This is part two in a series of blog posts on our presentation at BbWorld ’07, on the behalf of the Georgia VIEW project, Maintaining Large Vista Installations (2MB PPT). Part one covered automation of […]

  • False Positives

    It’s often argued that the high false positive rate proves the system is poorly run or even useless. This is not necessarily the case. In running a system like this, we necessarily trade off false positives against false negatives. We can lower either kind of error, but doing so will increase the other kind. The […]