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Babis Marmanis

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Top Stories by Babis Marmanis

How fast should our Java code be to be considered fast? After all, speed is a relative concept. I'll compare the results of CPU performance for the following JVMs: Sun's J2SE 1.4.1, 1.4.0, 1.3.1, and Jikes. These results can be used to make a number of educated decisions such as choosing a JVM, deciding on algorithmic designs, and selecting the right method from the API. They provide an overall assessment of performance that's not custom related since the code used is quite common and drawn directly from Sun's Java APIs. This article studies the Java APIs for an extra boost in performance. It's not a new idea, and is often referred to as micro-benchmarking (MBM). However, a systematic and thorough performance analysis at that level is still missing. Herein, I'll address performance as speed, measured in wall clock time. I'll cover various Java Virtual Machines (JVMs)... (more)

Algorithms of the Intelligent Web

I have recently finished writing the "Algorithms of the Intelligent Web" and it should hit the bookshelves in a few weeks. I would like to tell you what the book is about and why I wrote it -- to save some typing, hereafter, I will refer to the book as "AIW", "the AIW book", etc. The code for the book is hosted on Google Code here. The AIW book includes topics from the areas of machine learning, data mining, statistics, and discovery in knowledge bases. The literature on these topics is vast but it is, almost exclusively, academic and heavy in mathematical jargon. Nevertheless, ... (more)