059 - MIT Haystack Observatory
059 - MIT Haystack Observatory
059 - MIT Haystack Observatory
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This is a general problem with any minimization algorithm (such as curve fitting, which seeks<br />
to minimize the sum of squares of the residuals). An algorithm can find a local minimum, but<br />
there’s no guarantee that it will find the global minimum without searching the entire parameter<br />
space. Even this is no guarantee, since an exhaustive search of parameter space may necessarily<br />
be too coarse to find the global minimum. For instance, what if you dug a small but very deep<br />
(to 500 m below sea level) pit off the side of a mountain in the Himalayas<br />
10
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