Delta-rational chord: Difference between revisions
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which can be plugged back into the error formula to obtain the error. (We multiply the | which can be plugged back into the error formula to obtain the error. (We multiply the target DR chord by x in order to compare it to the approximation on the same isodifferential series.) | ||
This error measure is called '''naive least-squares error''' (NLS error). This error measure does not form a metric on the set of delta signatures with a fixed number of terms, since it is not symmetric. | This error measure is called '''naive least-squares error''' (NLS error). This error measure does not form a metric on the set of delta signatures with a fixed number of terms, since it is not symmetric. | ||