General Development Archive

Weave a neural net with Python

Neural nets, also known as artificial neural networks, mathematically model bioelectrical networks in the brain. Massively parallel and more inductive than deductive, they are used for everything from voice and character recognition to artificial intelligence. Python developer Andrew Blais introduces you to the simplest of the neural nets, the Hopfield -- and his net.py application gives you a hands-on opportunity to explore its ability to reconstruct distorted patterns.

A Directory Monitor Class For Delphi

There are times when a directory needs watched.  For reasons of its own, a program may need to know when a file is deleted, updated or renamed.  If .NET is involved, this is a trivial task.  Create an instance of the FileSystemWatcher; set some properties, and the task is completed.  If a non .NET solution is required (and regardless of the hype, some people haven’t embraced .NET in all of its glory.), the ReadDirectoryChangesW function must be used, however the documentation for ReadDirectoryChangesW is sketchy at best.

The Case for Gconf

There has been a lot of commentary recently about Gnome, and a common source of confusion seems to be Gconf - what is it, how does it work, and so on. Some people even seem to confuse Gconf with the registry database in Windows. I will attempt to clear some of this confusion and give an overview of Gconf, and why it looks the way it does.

Subversion 1.0.5 Released

Versions up to and including 1.0.4 have a potential denial of service and heap overflow issue related to the parsing of strings in the 'svn://' family of access protocols. This affects only sites running svnserve. It does not affect 'http://' access; repositories served only by Apache/mod_dav_svn do not have this vulnerability. This release fixes this issue.

Making An Operating System Faster

The performance of computer hardware typically increases monotonically with time. Even if the same could be said of software, the rate at which software performance improves is usually very slow compared to that of hardware. In fact, many might opine that there is plenty of software whose performance has deteriorated consistently with time. Moreover, it is rather difficult to establish an objective performance metric for software as complex as an operating system: a "faster OS" is a very subjective, context dependent phrase. Read the article at KernelThread.