Links for 2010-06-29

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2 Comments

  1. Craig Hughes
    Posted June 30, 2010 at 02:27 | Permalink

    So… the graph of detection rate over time… some of those lines sometimes descend as they move later in time. How could a sample be detected at day n, but then no longer be detected at day n+1?

    eg. the brighter red line, rises to ~88%, then falls to ~86% — how exactly is that possible? The black line (which finished at #3 position on the right) rises to ~75% before falling to ~73%. Earlier, it had risen to ~49% before falling to ~48% before then rising again. The dark blue line which is #3 for most of the time on the graph also declines after an initial hump.

  2. Posted June 30, 2010 at 11:08 | Permalink

    Craig — they could have some kind of heuristic based around “newness” of the sample; as the sample becomes “less new”, it stops being detected. That’s my guess…