2,002 research outputs found
The use of a common location measure in the invariant coordinate selection and projection pursuit
Invariant coordinate selection (ICS) and projection pursuit (PP) are two methods that can be used to detect clustering directions in multivariate data by optimizing criteria sensitive to non-normality. In particular, ICS finds clustering directions using a relative eigen-decomposition of two scatter matrices with different levels of robustness; PP is a one-dimensional variant of ICS. Each of the two scatter matrices includes an implicit or explicit choice of location. However, when different measures of location are used, ICS and PP can behave counter-intuitively. In this paper we explore this behavior in a variety of examples and propose a simple and natural solution: use the same measure of location for both scatter matrices
Note and Comment
A Criticism of President Hadley\u27s Views on The constitutional Position of Property in America ; Inconsistent Defenses; Vacation of Corporation Directors; Right of the United States to Recover Money Paid on Pension Checks Bearing Forged Indorsements; Damages Recoverable on Stock Broker\u27s Failure to Purchase as Directed
Discussion of "Geodesic Monte Carlo on Embedded Manifolds"
Contributed discussion and rejoinder to "Geodesic Monte Carlo on Embedded
Manifolds" (arXiv:1301.6064)Comment: Discussion of arXiv:1301.6064. To appear in the Scandinavian Journal
of Statistics. 18 page
Severe postpartum disruption of the pelvic ring: report of two cases and review of the literature
Pelvic dislocations are rare during labor, and the treatment is controversial. We report two cases of young women who sustained postpartum disruption of the pelvic ring: one case is an 8.8 cm wide separation of the pubic symphysis with sacroiliac joint disruption underwent surgical stabilization and the second case with 4.0 cm disruption being treated non-operatively. These cases illustrated of importance of accurate diagnosis, careful physical exam, fully informed consent and specific treatment for this condition
- …