Great Presentation re. what WebIDs enable: Personal Data Spaces (nee. Data Lockers)
All, A very important: what the Web of Linked Data will ultimately deliver presentation [1]. Please watch this presentation with value proposition articulation (rather than implementation technology) in mind. It does an excellent job of explaining the concept of: Personal Data Spaces (basically data virtualization via HTTP based Linked Data + WebID driven ACLs). My only little issue with Dave (a superficial one) lies with his use of Personal Data Locker I much prefer: Personal Data Spaces :-) Links: 1. http://www.vimeo.com/13942000 -- Dave Siegel presentation at Semtech 2010 -- Regards, Kingsley Idehen President CEO OpenLink Software Web: http://www.openlinksw.com Weblog: http://www.openlinksw.com/blog/~kidehen Twitter/Identi.ca: kidehen
Re: [foaf-protocols] Great Presentation re. what WebIDs enable: Personal Data Spaces (nee. Data Lockers)
On 11 August 2010 00:18, Kingsley Idehen kide...@openlinksw.com wrote: All, A very important: what the Web of Linked Data will ultimately deliver presentation [1]. Please watch this presentation with value proposition articulation (rather than implementation technology) in mind. It does an excellent job of explaining the concept of: Personal Data Spaces (basically data virtualization via HTTP based Linked Data + WebID driven ACLs). My only little issue with Dave (a superficial one) lies with his use of Personal Data Locker I much prefer: Personal Data Spaces :-) Great vid! Nice quote from DanC ... the important word in 'Semantic Web' is WEB :) Links: 1. http://www.vimeo.com/13942000 -- Dave Siegel presentation at Semtech 2010 -- Regards, Kingsley Idehen President CEO OpenLink Software Web: http://www.openlinksw.com Weblog: http://www.openlinksw.com/blog/~kidehen Twitter/Identi.cahttp://www.openlinksw.com/blog/%7Ekidehen%0ATwitter/Identi.ca: kidehen ___ foaf-protocols mailing list foaf-protoc...@lists.foaf-project.org http://lists.foaf-project.org/mailman/listinfo/foaf-protocols
Re: Best Practices for Converting CSV into LOD?
On Mon, 2010-08-09 at 10:37 -0600, Wood, Jamey wrote: Are there any established best practices for converting CSV data into LOD-friendly RDF? For example, I would like to produce an LOD-friendly RDF version of the 2001 - Present Net Generation by State by Type of Producer by Energy Source CSV data at: http://www.eia.doe.gov/cneaf/electricity/epa/epa_sprdshts_monthly.html I'm attaching a sample of a first stab at this. Questions I'm running into include the following: 1. Should one try to convert primitive data types (particularly strings) into URI references? Or just leave them as primitives? Or perhaps provide both (with separate predicate names)? For example, the sample EIA data I reference has two-letter state abbreviations in one column. Should those be left alone or converted into URIs? If the code corresponds to a concept which has a useful URI to link to then yes. In cases where the string is a code but there isn't an existing URI scheme then one approach is to create a set of SKOS concepts to represent the codes, recording the original code string using skos:notation. 2. Should one merge separate columns from the original data in order to align to well-known RDF types? For example, the sample EIA data has separate Year and Month columns. Should those be merged in the RDF version so that an xs:gYearMonth type can be used? Probably. Merging is useful if you are going to query via the merged form. In a case like year/month there could be an argument for also keeping the separate forms as well to enable you to query by month, independent of year. 3. Should one attempt to introduce some sort of hierarchical structure (to make the LOD more browseable)? The skos:related triples in the attached sample are an initial attempt to do that. Is this a good idea? If so, is that a reasonable predicate to use? If it is a reasonable thing to do, we would presumably craft these triples so that one could navigate through the entire LOD (e.g. state - state/year - state/year/month - state/year/month/typeOfProducer - state/year/month/typeOfProducer/energySource). Another approach is to use one of the statistics-in-RDF representations so that you can slice by the dimensions in the data. There is the Scovo vocabulary [1]. Recently a group of us have been working on an updated vocabulary for statistics [2] based on the SDMX standard [3]. At a recent Open Data Foundation workshop [4] we agreed to partition the SDMX-in-RDF work into a simple Data Cube vocabulary [5] and extension vocabularies to support particular domains such as aggregate statistics (SDMX) and maybe eventually micro-data (DDI). The Data Cube vocabulary is very much a work in progress but I think we have now closed out all the main open design questions, have a draft vocab and aim to get the initial documentation to a usable state over the coming few weeks. Feel free to ping me off line if you would like to follow up on this. Dave [1] http://semanticweb.org/wiki/Scovo [2] http://code.google.com/p/publishing-statistical-data/ [3] http://sdmx.org/ [4] http://www.odaf.org/blog/?p=39 [5] http://publishing-statistical-data.googlecode.com/svn/trunk/specs/src/main/html/cube.html
RIF and RuleML-2010 Challenge
To all W3C WG members who may be interested in Rules, [Apologies if you receive this more than once because you are on more than one mail list] The Rule Interchange Format (RIF) is in Rec and implementations have a stable basis. RIF-based interoperation between systems is becoming a reality. In its programme in October, the RuleML-2010 Symposium (http://2010.ruleml.org) will feature Rule-related systems that use W3C standards. There are two options (not mutually exclusive): 1) The RuleML Challenge (with prizes!) invites submissions of benchmarks, demonstrations, case studies, experience reports, best practice solutions, implementations and tools. Industry-related presentations are particularly encouraged. The call for the Challenge is included below, and the Challenge website is at http://ruleml-challenge.cs.nccu.edu.tw 2) RuleML-2010 is co-located with the Business Rules Forum (www.businessrulesforum.com) and overlaps with the Forum on Thursday 21 October. We have an exhibition area in the afternoon that provides an opportunity to reach both the BR Forum and RuleML audiences. We already have agreement for a 3-way interoperability demo of RIF PRD between IBM, Oracle and Red Hat. Between the two options, there is a unique opportunity to showcase work you have done in RIF during the runtime of this WG. Please submit papers and demos about RIF tools, including: * Engines (for various subsets or supersets of RIF) * Translators (between your own systems and RIF) * Other tools (semantic validators, presentation syntax, ...) Challenge details are included below. If you need more information, please get back to me (about the Thursday exhibition) or contact the Challenge chairs (listed below). Regards, John Hall, Model Systems, UK Program Co-chair, RuleML-2010 * RuleML-2010 - 4th International Rule Challenges * October 21-23, 2010, Washington, DC, USA* http://2010.ruleml.org/ruleml-2010-challenge.html * * * Call for Demos - Submission Deadline - August 20th, 2010 * * Forthcoming RuleML special journal issue * * International Journal of Cooperative Information Systems (IJCIS) * * Springer journal AI Law * * New categories in the Challenge with prestigious prizes * * 15% RuleML-2009 Partner discounts - see registration page * * Overview and Aim == This year, the 4th International Web Rule Symposium (RuleML-2010) will be held near Washington, DC, USA. RuleML-2010 (http://2010.ruleml.org/) is devoted to practical distributed rule technologies and rule-based applications, which need language standards for rules (inter)operating in, e.g., the Semantic Web, Enterprise Systems, Intelligent Multi-Agent Systems, Event-Driven Architectures, and Service-Oriented Applications. The RuleML-2010 Challenge is one of the highlights at the main conference RuleML-2010 with prestigious prizes. Submissions of benchmarks/evaluations, demos, case studies / use cases, experience reports, best practice solutions (e.g. design patterns, reference architectures, models), rule-based implementations/ tools/ applications, demonstrations engineering methods, implementations of rule standards (e.g. RuleML, RIF, SBVR, PRR, rule-based Event Processing languages, BPMN+rules, BPEL+rules, ...), rules + industrial standards (e.g. XBRL, MISMO, Accord, ...), and industrial problem statements are particularly encouraged. This year, the RuleML-2010 Challenge will have a special focus theme: * Modelling Rules in the temporal and geospatial applications - temporal modelling and reasoning - geospatial modelling and reasoning - cross-linking between temporal and geospatial knowledge - visualization of rules with graphic models in order to support end-user interaction Key themes of the RuleML-2010 Challenge include the following: * Demos related to the RuleML-2010 Track Topics: http://2010.ruleml.org/topics.html * Extensions and implementations of W3C RIF * Editing environments and IDEs for Web rules * Benchmarks and comparison results for rule engines * Distributed rule bases and rule services * Reports on industrial experience about rule systems Prizes will be awarded to the two best applications from the main focus theme and for the all categories. All accepted demos will be presented in a special Challenge Session. Submission == The submission is composed of two parts: - open-source or commercial demo - demo papers describing research, implementation, and technical details of your submission. Submissions to the Rules Challenge 2010 consist of a demo
