Bulletin of the University of San Diego Coordinate Colleges 1969-1970

218 pages : illustrations, photographs ; 23 cmhttps://digital.sandiego.edu/coursecatalogs-cc/1003/thumbnail.jp

Bulletin of the University of San Diego Coordinate Colleges 1971-1972

182 pages : illustrations, photographs ; 23 cmhttps://digital.sandiego.edu/coursecatalogs-cc/1005/thumbnail.jp

Bulletin of the University of San Diego Coordinate Colleges 1970-1971

203 pages : illustrations, photographs ; 23 cmhttps://digital.sandiego.edu/coursecatalogs-cc/1004/thumbnail.jp

To coordinate or not to coordinate?

Foreign exchange rates

Giant Tortoise Coordinate

The giant tortoise coordinate is a moving mirror inspired generalization of the Regge-Wheeler counterpart that demonstrates a unitary evaporating black hole emitting a total finite energy.Comment: 10 pages, 1 figur

Pathwise coordinate optimization

We consider ``one-at-a-time'' coordinate-wise descent algorithms for a class of convex optimization problems. An algorithm of this kind has been proposed for the $L_1$-penalized regression (lasso) in the literature, but it seems to have been largely ignored. Indeed, it seems that coordinate-wise algorithms are not often used in convex optimization. We show that this algorithm is very competitive with the well-known LARS (or homotopy) procedure in large lasso problems, and that it can be applied to related methods such as the garotte and elastic net. It turns out that coordinate-wise descent does not work in the ``fused lasso,'' however, so we derive a generalized algorithm that yields the solution in much less time that a standard convex optimizer. Finally, we generalize the procedure to the two-dimensional fused lasso, and demonstrate its performance on some image smoothing problems.Comment: Published in at http://dx.doi.org/10.1214/07-AOAS131 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org