Friday, June 10, 2005

Rule Language Standardizations: Report from the W3C Workshop on Rule Languages for Interoperability 

Rule Language Standardizations: Report from the W3C Workshop on Rule Languages for Interoperability: "Summary:
In April 2005, the W3C held a two-day workshop to gather data and explore options for establishing a standard web-based language for expressing rules. Over eighty representatives from various vendors, user communities, and research groups attended and reported on their views, experience, and ideas.
More than a dozen use cases were presented for rule language standardization, and about a half-dozen candidate technologies were presented and discussed. The workshop confirmed the differences among types of rules, such as 'if condition then action' rules and 'if condition then condition' ones. It also reviewed some of the difficulties in uptake that rules technologies have had in the past, but there was a general sense of new opportunity.
The workshop gave many indications that a W3C Recommendation here would be useful, but it was less clear what sort of standard would satisfy a sufficient base of users. In any Activity Proposal following from this workshop, a Working Group should be given a clear and narrow scope, making it easy to determine its relevance to various parts of the greater rules community."

Thursday, June 09, 2005

Centre for Advanced Spatial Analysis (CASA) 

Centre for Advanced Spatial Analysis (CASA): "The modelling group in CASA is working with a variety of fine-grained spatial models based on simulating the local action of individual actors or agents, which more generally are distinct objects in the environment, and whose behaviour gives rise to patterns which imply some measure of self-organisation. Cellular Automata (CA) is used widely for such simulations. There are a number of projects based on simulating how pedestrians move in town centres and buildings, how land is developed in cities, and how movement patterns emerge from the clustering and aggregation of objects which group to form flows."

About CASA 

About CASA: "About CASA
The Centre for Advanced Spatial Analysis (CASA) is an initiative within University College London to develop emerging computer technologies in several disciplines which deal with geography, space, location, and the built environment. CASA is run under the Directorship of Michael Batty, Professor of Spatial Analysis and Planning (UCL)."

Web resources for cellular automata and multi-agents systens 

Web resources for cellular automata and multi-agents systens

Google Search: "cellular automata" "agent based modeling" 

Google Search: "cellular automata" "agent based modeling"

Monday, June 06, 2005

AJAX Matters - Asynchronous JavaScript and XML and XMLHTTP development information 

AJAX Matters - Asynchronous JavaScript and XML and XMLHTTP development information

Sunday, June 05, 2005

Semedia: Semantic Web and Multimedia Group 

SEMEDIA@Univpm: "The following projects are proposed as Open Source in the Google's Summer of Code initiative.

While other projects in the same initiative have, so to say, a well defined 'industrial' nature, those that we propose here have a consistent research component and will therefore require more than just implementation skills. Scientifically sound analysis, synthesis and design skills will be considered as important as those in high quality implementation. "

The four basic ontologies of semantic interpretation 

The four basic ontologies of semantic interpretation: "Abstract:
This paper compares the semantic interpretation of logical, programming, and natural languages. It shows that they are based on different ontologies, and investigates the relation between the ontology assumed and the analysis of empirical phenomena such as propositional attitudes, truth, and the implementation of procedural semantics. "

Introduction to Social Network Methods 

Introduction to Social Network Methods: Table of Contents
From the Preface:
"Our goal in preparing this book is to provide a very basic introduction to the core ideas of social network analysis, and how these ideas are implemented in the methodologies that many social network analysts use. The book is distributed free on the Internet in the hope that it may reach a diverse audience, and that the core ideas and methods of this field may be of interest. The book may also be suitable as course-support for undergraduate or introductory graduate training in social network analysis. While this text is not a user's guide to UCINET (which has excellent documentation in it's help files), it may be of assistance to users working with that particular software package."

From 1. Social network data / Populations, samples, and boundaries
"The populations that network analysts study are remarkably diverse. At one extreme, they might consist of symbols in texts or sounds in verbalizations; at the other extreme, nations in the world system of states might constitute the population of nodes. Perhaps most common, of course, are populations of individual persons. In each case, however, the elements of the population to be studied are defined by falling within some boundary."

From 4. Working with NetDraw to visualize graphs / Introduction: A picture is worth...
"There are a number of software tools that are available for drawing graphs, and each has certain strengths and limitations. In this chapter, we will look at some commonly used techniques for visualizing graphs using NetDraw (version 4.14, which is distributed along with UCINET). There are many other packages though, and you might want to explore some of the tools available in Pajek, and Mage (look for software at the web-site of the International Network of Social Network Analysts - INSNA)."

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