Peter Ross Underhill

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Questions related from Peter Ross Underhill

How do you compensate for a underestimation of the minimum covariance estimator?

The covariance matrix obtained from the minimum covariance determinant estimator (Rousseeuw & Van Driessen) underestimates the true covariance matrix because it eliminates distant points. Is there...

06 June 2014 980 1 View

What is the best method for finding outliers in multi-dimensional space?

We are working on an NDT method to find flaws around fasteners in an aircraft. By experience the vast majority of fasteners are unflawed. The measurement returns approximately 5 descriptors...

06 June 2014 2,818 3 View