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Type: cemmap Working Papers Authors: Victor Chernozhukov, Ivan Fernandez-Val and Alfred Galichon ISSN: 1753-9196
Now published in: Biometrika [Details]
Suppose that a target function is monotonic, namely, weakly increasing, and an original estimate of the target function is available, which is not weakly increasing. Many common estimation methods used in statistics produce such estimates. We show that these estimates can always be improved with no harm using rearrangement techniques: The rearrangement methods, univariate and multivariate, transform the original estimate to a monotonic estimate, and the resulting estimate is closer to the true curve in common metrics than the original estimate. We illustrate the results with a computational example and an empirical example dealing with age-height growth charts. Search |
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