Will permanent LVADs be better than heart transplantation?

The transitive property across randomized controlled trials: if B is better than A, and C is better than B, will C be better than A?

In everyday practice, clinicians are faced with questions on the comparative benefits and risks of the various health interventions available to treat patients. When performed well and reported completely, randomized controlled trials (and systematic reviews of such trials) are generally considered to be the most scientifically rigorous approach to determine whether a cause-effect relationship ...

Will C + + be faster than Fortran ? Todd

After years of being dismissed as too slow for scientiic computing , C++ has caught up with Fortran and appears ready to give it stii competition. We survey the reasons for the historically poor performance of C++ (pairwise expression evaluation, the abstraction penalty, aliasing ambiguities) and explain how these problems have been resolved. C++ can be faster than Fortran for some applications...

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Why Experimentation can be better than \ Perfect

Many problems correspond to the classical control task of determining the appropriate control action to take, given some (sequence of) observations. One standard approach to learning these control rules, called behavior cloning, involves watching a perfect operator operate a plant, and then trying to emulate its behavior. In the experimental learning approach, by contrast, the learner rst guess...

Object Groups May Be Better Than Pages

I argue against trying to solve the problem of clustering objects into disk pages. Instead, I propose that objects be fetched in groups that may be specific to an application or user, and that can be computed at fetch time. I briefly describe crystals, which serve to record such groups statically. Finally, I speculate that object fetching may be particularly relevant for providing services to v...