We enumerate and classify all stationary logarithmic configurations of d + 2 d+2 </inline-formu...

This editor’s note gives an overview of the content this issue which is sponsored by Oregon Sea Grant.

This paper describes a new variant of the least-mean-squares (LMS) algorithm, with low computational complexity, for updating an adaptive lter. The reduction in complexity is obtained by using values of the input data and the output error, quantized to the nearest power of two, to compute the gradient. This eliminates the need for multipliers or shifters in the algorithm's update section. The q...

A digital service, like a web site, may contain a lot of information but we often do not know if it is used, relevant or valuable. Transaction log files generated by digital information services do record the pages (topics or content) viewed by users and this is perhaps the most interesting aspect of the logs. However, analysing these pages poses plenty of problems for researchers, especially w...