When Is Team Exam Performance a Better Measure of Learning than Individual Performance?

When Is Team Exam Performance a Better Measure of Learning than Individual Performance?

Comparing the Performance of Least-Squares Estimators: when is GTLS Better than LS?

Several computer vision problems lead to linear systems affected by noise. These are commonly solved by least-squares estimators, the most popular being ordinary least squares (LS), total least squares (TLS) and generalized total least squares (GTLS). However, the statistical or structural assumptions of these theoretical estimators are very often violated in practice. Given that their computat...

When poll is better than interrupt

In a traditional block I/O path, the operating system completes virtually all I/Os asynchronously via interrupts. However, performing storage I/O with ultra-low latency devices using next-generation non-volatile memory, it can be shown that polling for the completion – hence wasting clock cycles during the I/O – delivers higher performance than traditional interrupt-driven I/O. This paper thus ...

When Virtual is Better than Real

This position paper argues that the operating system and applications currently running on a real machine should relocate into a virtual machine. This structure enables services to be added below the operating system and to do so without trusting or modifying the operating system or applications. To demonstrate the usefulness of this structure , we describe three services that take advantage of...

When Two Is Better Than One

Looking for the perfect sequencing instrument for your next experiment? As Jeffrey Perkel finds out, you might just need more than one.