The SOM (self organizing maps) are some very intuitive neural networks. There are a lot of more detailed description of these networks but here is a more intuitive description. You have a number of neurons usually arranged in a 2D or 3D grid, each neuron has an associated weight vector. The input, which is a vector of the same size as the weight vector is connected to each neuron. The natural association is that each vector is a point in an n-dimensional space....
Applies to: JBPM 3.1.2, JBoss 4.0.5-GA Everything starts with a beautiful concept but has to pass past those nasty errors. The same applies to this JBPM project, everything was nice, I have seen it running and then I was supposed to take the sources, clean, organize and enhance. Everything ok until now. The only problem is that when deploying the JBPM (sar) service there was this error: 16:09:17,402 ERROR [CommandExecutorThread] org....
Applies to: JBoss 4.0.5 GA Everything started with a web application which worked perfectly inside a Tomcat 5 container and had to be migrated to JBoss. At the first deployment got this error: 14:45:56,496 ERROR [STDERR] log4j:ERROR The class "org.apache.log4j.spi.ErrorHandler" was loaded by 14:45:56,496 ERROR [STDERR] log4j:ERROR [WebappClassLoader delegate: false repositories: /WEB-INF/classes/----------> Parent Classloader:java.net.FactoryURLClassLoader@172bab9] whereas object of type 14:45:56,497 ERROR [STDERR] log4j:ERROR "org.jboss.logging.util.OnlyOnceErrorHandler" was loaded by [org.jboss.system.server.NoAnnotationURLClassLoader@19616c7].14:45:56,542 ERROR [STDERR] log4j:ERROR Could not create an Appender....
Applies to: JBoss 4.0.5 GA As I am working on a rather complex application with a lot of dependancy bounded MBeans I found it necessary to have a small application, in a different JVM, invoke a MBean method for administrative purposes. Even if this sounded easy at the begining it seemed that I had to face 2 problems: JBoss JMX implementation JAAS access to the secured console Since I both googled and searched JBoss forums without much help I decided, upon succeding, to write this article as it might help someone futher....
Port knocking sample client-server Last updated: 18-jan-2005 This update contains the following improvements: * configuration of the server is now located in a separate file Example configuration file for the server: #$Id: knockd.cfg,v 2.0 2005/01/18 11:57:19 len Exp $ #knockd configuration file [main] #the file to monitor file=/var/log/all.log #the pattern to watch for, note that you must have the #"ts", "from" and "port" groups (see python "re" module for more documentation) pattern=(?...
VERILOG 2 VHDL CONVERTOR INTRODUCTION We have succeded in making work our first version of a Verilog to VHDL convertor. The convertor was written for a subset of the Verilog grammar, taken from the IEEE specifications. The convertor was implemented on a Linux iv386 machine, using a lexical analyser written in “Lex” (flex), a sintactic analyser written in “Yacc” (bison), a set of ANSI C++ classes and some C sources. The graphic interface was created using Qt v1....
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