Determining optimal catheterization rates

Determining optimal population rates of cardiac catheterization: a phantom alternative?

Determining the optimal redistribution

The classical redistribution problem aims at optimally scheduling communications when moving from an initial data distribution Dini to a target distribution Dtar where each processor Pi will host a subset P (i) of data items. However, modern computing platforms are equipped with a powerful interconnection switch, and the cost of a given communication is (almost) independent of the location of i...

Determining Optimal Few - Stage Allocation

This paper gives algorithms for the design of optimal experiments involving Bernoulli populations in which allocation is done in stages. It is assumed that the outcomes of the previous stage are available before the allocations for the next stage are decided and that the total sample size for the experiment is xed. At each stage, one must decide how many observations to take and how many to sam...

Economic evaluation of increasing population rates of cardiac catheterization

BACKGROUND Increasing population rates of cardiac catheterization can lead to the detection of more people with high risk coronary disease and opportunity for subsequent revascularization. However, such a strategy should only be undertaken if it is cost-effective. METHODS Based on data from a cohort of patients undergoing cardiac catheterization, and efficacy data from clinical trials, we use...

Optimal Rates of Aggregation

We study the problem of aggregation of M arbitrary estimators of a regression function with respect to the mean squared risk. Three main types of aggregation are considered: model selection, convex and linear aggregation. We define the notion of optimal rate of aggregation in an abstract context and prove lower bounds valid for any method of aggregation. We then construct procedures that attain...