GPL legal test

Friend of mine, Omry, posted recently that he is involved in case of his friend, Sasha Marianovsky, against IChessU. Details could be found on Sasha’s site. What is really interesting in this case is that it is GPL legal test, probably first in Israel.

I remembered that there were already such cases in the world and found winning example pretty fast. Additionally there is a site dealing with all aspects of GPL violations. There is a lot of interesting info about this controversial license.

Great decision tree for rules engine deployment

This article by George Rudolph is actually kind of decision tree for rules engine deployment go/no go. If you evere thought does your product need rules engine you should definitely read it.

Understand what WSDL types are

Ever wonder why there are few (5) WSDL types around? Find this interesting article on IBM’s developer works.

Got it today in my email box from colleague.

Sony gets into video sharing with Grouper

Rally after web 2.0 winners continues with Sony acquiring of Grouper for 65M$ as reported by ZDNet.
Major players in the content space understand whee is their future.

XML performance

Everyone is talking about SOA. SOA means web services (no by definition, but de facto). Web services mean XML. XML mean slow performance, right?
There were lot of tries in recent years to improve performance of XML collaboration.
It was binary XML, that never flied, SUN’s fast web services that aren’t too popular and still too slow.
May be this performance test could bring us a solution. It is also backed up by test conducted by IBM developerWorks.
The holy grail of XML found in those two tests is XBIS XML, open source project on sourceforge.
I’m going to research it. Results will be reported.

GPU – Global Processing Unit

“GPU is a Gnutella client that allows users to share CPU-resources. GPU allows the creation of computer alliances.”

GPU doesn’t manage resource sharing in means of fairness, resources are managed based on simple and very familiar idea: take whatever you need (and we can give you), give us whatever you have (and want to give).

This principe can’t workout for internet, so they are talking about computer aliances.

Basically idea isn’t new. There were lot of theoretical work (Tuple Spaces, etc.), specifications (Java Spaces) and implementations (GigaSpaces).

Multi factor authentication

There is a new beast in the town, multi factor security. PhishCops are talking about completely utopian solution they provide to the world and are talking about vulnerabilities of conventional methods of authentication: here and here.

There are lot interesting security and cryptography related info on their site. Specifically:

- New secure hash standard

-General description of their methods

RETE explanation for programmers

This paper describes RETE algo. for programmers. Didn’t read yet, (have some assignments to do ), but it looks good.

RETE and co.

RETE is base algorithm for most Rule engines. Here is a good paper on RETE/UL algo.

Looked for ROCK (data clustering) algorithm references

Found this lecture about Data Mining.
Here is an original work on ROCK (Robust Clustering Algorithm for Categorical Attributes).
I’m still in the process of understanding it.