7 lines
978 B
Plaintext
7 lines
978 B
Plaintext
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Request for help – I need a statistician
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<p>GPSD has a serious bug somewhere in its error modeling. What it effects is position-error estimates GPSD computes for GPSes that don’t compute them internally themselves and report them on the wire. The code produces plausible-looking error estimates, but they lack a symmetry property that they should have to be correct.</p>
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<p>I need a couple of hours of help from an applied statistician who can read C and has experience using covariance-matrix methods for error estimation. Direct interest in GPS and geodesy would be a plus.</p>
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<p>I don’t think this is a large problem, but it’s just a little beyond my competence. I probably know enough statistics and matrix algebra to understand the fix, but I don’t know enough to find it myself.</p>
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<p>Hundreds of millions of Google Maps users might have reason to grateful to anyone who helps out here. </p>
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<p>UPDATE: Problem solved, see next post.</p>
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