Some affixes are roots, others are heads

When some are more equal than others.

Some Multiobjective Optimizers are Better than Others

The No-Free-Lunch (NFL) theorems hold for general multiobjective fitness spaces, in the sense that, over a space of problems which is closed under permutation, any two algorithms will produce the same set of multiobjective samples. However, there are salient ways in which NFL does not generally hold in multiobjective optimization. Previously we have shown that a ‘free lunch’ can arise when comp...

Some Terms are more Interchangeable than Others

This paper describes the work done by the Information Retrieval Research Group at Océ Technologies B.V., for the Cross-Language Evaluation Forum (CLEF) 2001. We have participated in the Dutch Monolingual task and submitted three runs. In this paper we introduce a new method for relevance computation using two new query operators. This method is meant to be applied to Multilingual Retrieval in t...

Some spikes are more informative than others.

Editor's Note: These short, critical reviews of recent papers in the Journal, written exclusively by graduate students or postdoctoral fellows, are intended to summarize the important findings of the paper and provide additional insight and commentary. For more information on the format and purpose of the Journal Club, please see What is the language of the brain when it links perception and be...

Are Some RISC-Based Clusters More Secure Than Others?

In February 2004, TechWise Research published a paper entitled: Total Cost of Ownership for Entry-Level and Mid-Range Clusters. That paper showed that HP OpenVMS/AlphaServer clusters average fewer hours of security-related downtime than IBM AIX/pSeries and Sun Solaris/Sun Fire clusters. TechWise Research decided to conduct a follow-up study to probe specifically into the area of cluster securit...