Re: [Ann] WebVOWL 0.3 - Visualize your ontology on the web
Hi John, On 09.01.2015 14:08, John Walker wrote: On January 9, 2015 at 1:15 PM Steffen Lohmann steffen.lohm...@vis.uni-stuttgart.de wrote: On 09.01.2015 11:59, John Walker wrote: I see under Selection Details that there is a count of instances when a class is selected. Is there any option to show other otherwise enumerate the instances of a class? Maybe showing the instances in the graph might clutter things up (could add a filter for this), but simply adding a list of links under Selection Details would be a good start. Good point. It is already on our list of issues and also defined in the VOWL 2 spec: http://vowl.visualdataweb.org/v2/#individuals We will not go for the VOWL 1 representation in WebVOWL for several reasons, but use the recommended implementation in the sidebar (as you also proposed). We may, however, not list all individuals but only a subset (if there are many), as VOWL focuses on the TBox and as VOWL-JSON files could become quite large if we would include all individuals. We may use separate JSON files for TBox and ABox in some future version of WebVOWL, but this requires some major structural changes. In those cases where those individuals are part of the ontology/vocabulary, I would consider them as part of the terminology and useful to include in the visualization somehow. Of course you would want to start visualizing all resources with type foaf:Person :) That's right (as there is no strict separation between TBox and ABox in OWL). We will see what we can do here. We plan to list at least up to a certain number of individuals in WebVOWL in the future. This would be useful if the ontology contains, for example, code lists. Do you have a good example for such an ontology? Or for any other ontology that contains many individuals? I was trying it out with the current draft GS1 Vocabulary: http://vowl.visualdataweb.org/webvowl/#iri=http://dydra.com/nlv0/gs1.ttl Something like GoodRelations also contains predefined/enumerated lists of values: http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/goodrelations/v1 Thank you. These are indeed good examples for ontologies with individuals. We will use them as test cases. In the GS1 case I notice many of the classes are shown in darker blue as they are not defined to be an owl:Class, however some of the classes like http://gs1.org/voc/FasteningTypeCode are shown in lighter blue and shown with type owl:Class even though this is not stated in the source data. Any ideas why? Dark blue is the recommended color for external elements, i.e. elements whose base URI differs from that of the visualized ontology - see http://vowl.visualdataweb.org/v2/#externalElements and http://vowl.visualdataweb.org/v2/#colorExternal You are right that the coloring is partly wrong for the above ontologies. This seems to be a bug in our OWL2VOWL converter, resulting from an internal comparison of the ontology IRI with the element IRI. We will fix it in the next release. Thanks again for your feedback, Steffen -- Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS) University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
Re: [Ann] WebVOWL 0.3 - Visualize your ontology on the web
On 05.01.2015 16:29, Stian Soiland-Reyes wrote: This is great stuff! Thank you, Stian. We are glad to hear that. I tried it with my ontology PAV - and it seems it is struggling a bit because PAV (deliberately) don't have a defined domain and range on object properties: http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/pav/ Hence everything goes from and to Thing in the centre, which makes it a bit clotted - I could not use the Gravity setting to space out the properties. In our manually made diagram I show this using additional vague resource boxes - perhaps each unbound property could just get an empty dotted box on the outside instead of going back to Thing? http://pav-ontology.googlecode.com/svn/trunk/images/pav-overview.png If there is a large set of properties without domain and range axioms in an ontology, the current WebVOWL rendering is indeed not perfect. Your PAV ontology is a good example for this. We will think about possible alternatives to adapt or extend the splitting rules of VOWL 2 - http://vowl.visualdataweb.org/v2/#splittingRules . Here's a nice view that I liked, using PROV-O http://vowl.visualdataweb.org/webvowl/#iri=http://www.w3.org/ns/prov-o The visualization is nice but not 100% complete yet, as the current WebVOWL implementation does not render properties with multiple domain or range axioms properly at the moment (e.g., the property hadActivity has more than one domain). We are working on that issue and it will likely be resolved in the next WebVOWL release. Is it possible to turn off the Subclass of label and only show the line? Several people asked for that already, so we plan to include some kind of expert mode with a reduced notation in the next WebVOWL release. However, we do not want to remove that label from the initial visualization, as it clarifies the direction of the subclass relation and is important to make VOWL understandable to casual users, as we found out in our evaluations - see our papers on VOWL linked at http://vowl.visualdataweb.org/v2/#references Would it be possible to save a link to a particular view (without having to save the SVG)? That navigation state fits much better in the # parameters than the iri= I would belive. This is a tricky question, as it would require to save the node positions of the VOWL graph in an annotated JSON or the like. The current VOWL-JSON is not optimized for that, but we may incorporate such a feature in one of the next releases (though I cannot promise). I know it's not a proper ontology - yet people still like it for some reason. Here however it fails with Ontology could not be loaded. Conversion failed. http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/dc/terms/ This is because the vocabulary misses some OWL constructs that are expected by WebVOWL (e.g., an ontology IRI). We will try to fix it and also allow the parsing of such RDFS vocabularies in the next WebVOWL release. Many thanks again for your feedback - very useful, Steffen On 19 December 2014 at 15:49, Steffen Lohmann steffen.lohm...@vis.uni-stuttgart.de wrote: Hi all, we are glad to announce the release of WebVOWL 0.3, which integrates our OWL2VOWL converter now. WebVOWL works in modern web browsers without any installation so that ontologies can be instantly visualized. Check it out at:http://vowl.visualdataweb.org/webvowl.html To the best of our knowledge, WebVOWL is the first comprehensive ontology visualization completely based on open web standards (HTML, SVG, CSS, JavaScript). It implements VOWL 2, which has been designed in a user-oriented process and is clearly specified at http://vowl.visualdataweb.org (incl. references to scientific papers). Please note that: - WebVOWL is a tool for ontology visualization, not for ontology modeling. - VOWL considers many language constructs of OWL but not all of them yet. - VOWL focuses on the visualization of the TBox of small to medium-size ontologies but does not sufficiently support the visualization of very large ontologies and detailed ABox information for the time being. - WebVOWL 0.3 implements the VOWL 2 specification nearly completely, but the current version of the OWL2VOWL converter does not. These issues are subject to future work. Have fun with it! On behalf of the VOWL team, Steffen -- Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS) University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
Re: [Ann] WebVOWL 0.3 - Visualize your ontology on the web
Hi John, On 09.01.2015 11:59, John Walker wrote: I see under Selection Details that there is a count of instances when a class is selected. Is there any option to show other otherwise enumerate the instances of a class? Maybe showing the instances in the graph might clutter things up (could add a filter for this), but simply adding a list of links under Selection Details would be a good start. Good point. It is already on our list of issues and also defined in the VOWL 2 spec: http://vowl.visualdataweb.org/v2/#individuals We will not go for the VOWL 1 representation in WebVOWL for several reasons, but use the recommended implementation in the sidebar (as you also proposed). We may, however, not list all individuals but only a subset (if there are many), as VOWL focuses on the TBox and as VOWL-JSON files could become quite large if we would include all individuals. We may use separate JSON files for TBox and ABox in some future version of WebVOWL, but this requires some major structural changes. This would be useful if the ontology contains, for example, code lists. Do you have a good example for such an ontology? Or for any other ontology that contains many individuals? Cheers, Steffen -- Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS) University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn
[CfP] VOILA @ ISWC 2015 - Visualizations and User Interfaces for Ontologies and Linked Data
Notification: July 30, 2015 Camera-ready: August 14, 2015 Attendance == Note that workshop attendees cannot register for the workshop only, but need to register for the main conference, as well. Organizers == Valentina Ivanova, Linköping University, Sweden Patrick Lambrix, Linköping University, Sweden Steffen Lohmann, University of Stuttgart, Germany Catia Pesquita, University of Lisbon, Portugal
[Ann] QueryVOWL
Hi all, last week we presented a prototype at ESWC that implements our VOWL-based visual query language (QueryVOWL) for SPARQL-based Linked Data querying. Check it out at: http://queryvowl.visualdataweb.org Note that it has mainly been developed to demonstrate the QueryVOWL approach and should not be considered a mature tool (e.g., it contains some known bugs). It does also not implement all current features of the visual language that are described at http://vowl.visualdataweb.org/queryvowl/v1/index.html The web demo is configured for the DBpedia endpoint. It can only be used if the DBpedia endpoint is available and may slow down if many people access it simultaneously. For these cases, we also provide a short screencast of the tool. That being said, enjoy the demo (or video)! On behalf of the QueryVOWL team, Steffen -- Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS) University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
[CfP] VOILA @ ISWC 2015 - Visualizations and User Interfaces for Ontologies and Linked Data
, 2015 Camera-ready: August 14, 2015 Attendance == Note that workshop attendees cannot register for the workshop only, but need to register for the main conference, as well. Organizers == Valentina Ivanova, Linköping University, Sweden Patrick Lambrix, Linköping University, Sweden Steffen Lohmann, University of Stuttgart, Germany Catia Pesquita, University of Lisbon, Portugal
Job Openings at Fraunhofer IAIS in Bonn: Project Manager, Business Developer, and Software Engineers
Fraunhofer IAIS is currently seeking for talented project managers, business developers, and software engineers for a couple of Semantic Web / Linked Data related projects that will start soon. We are particularly looking for people with German language skills this time. Therefore, the job descriptions are only available in German: Project Manager: - http://www.iais.fraunhofer.de/6322.html Business Developer: - http://www.iais.fraunhofer.de/6323.html Software Engineer: - http://www.iais.fraunhofer.de/6324.html If you have any questions regarding these jobs, do not hesitate to contact me or any other member of the EIS team: http://eis.iai.uni-bonn.de/Team.html
CFP: Visualization and Interaction for Ontologies and Linked Data (VOILA) at ISWC 2016
CALL FOR PAPERS VOILA 2016 - Visualization and Interaction for Ontologies and Linked Data 2nd International Workshop at ISWC 2016, 15th International Semantic Web Conference October 17 or 18, 2016, Kobe, Japan http://voila2016.visualdataweb.org -- Abstracts Deadline: June 27, 2016 Submission Deadline: July 1, 2016 -- Motivation and Objectives == 'A picture is worth a thousand words', we often say, yet many areas are in demand of sophisticated visualization techniques, and the Semantic Web is not an exception. The size and complexity of ontologies and Linked Data in the Semantic Web constantly grows and the diverse backgrounds of the users and application areas multiply at the same time. Providing users with visual representations and intuitive interaction techniques can significantly aid the exploration and understanding of the domains and knowledge represented by ontologies and Linked Data. Ontology visualization is not a new topic and a number of approaches have become available in recent years, with some being already well-established, particularly in the field of ontology modeling. In other areas of ontology engineering, such as ontology alignment and debugging, although several tools have recently been developed, few provide a graphical user interface, not to mention navigational aids or comprehensive visualization and interaction techniques. In the presence of a huge network of interconnected resources, one of the challenges faced by the Linked Data community is the visualization of multidimensional datasets to provide for efficient overview, exploration and querying tasks, to mention just a few. With the focus shifting from a Web of Documents to a Web of Data, changes in the interaction paradigms are in demand as well. Novel approaches also need to take into consideration the technological challenges and opportunities given by new interaction contexts, ranging from mobile, touch, and gesture interaction to visualizations on large displays, and encompassing highly responsive web applications. There is no one-size-fits-all solution but different use cases demand different visualization and interaction techniques. Ultimately, providing better user interfaces, visual representations and interaction techniques will foster user engagement and likely lead to higher quality results in different applications employing ontologies and proliferate the consumption of Linked Data. Topics of Interest == Topics, subjects, and contexts of interest include (but are not limited to): * Topics: - visualizations - user interfaces - visual analytics - requirements analysis - case studies - user evaluations - cognitive aspects * Subjects: - ontologies - linked data - ontology engineering (development, collaboration, ontology design patterns, alignment, debugging, evolution, provenance, etc.) * Contexts: - classical interaction contexts (desktop, keyboard, mouse, etc.) - novel interaction contexts (mobile, touch, gesture, etc.) - special settings (large, high-resolution, and multiple displays, etc.) - specific user groups and needs (people with disabilities, domain experts, etc.) Submission Guidelines == Paper submission and reviewing for this workshop will be electronic via EasyChair. The papers should be written in English, following the Springer LNCS format, and be submitted in PDF on or before July 1, 2016. Paper abstracts are due by June 27, 2016. The following types of contributions are welcome. The recommended page length is given in brackets. There is no strict page limit but the length of a paper should be commensurate with its contribution. Full research papers (8-12 pages); Experience papers (8-12 pages); Position papers (6-8 pages); Short research papers (4-6 pages); System papers (4-6 pages). Accepted papers will again be published as a volume in the CEUR Workshop Proceedings series. Special Issue in JWS == We are preparing a special issue on the workshop topic for the Journal of Web Semantics. More information about it will be announced soon. Important Dates == Abstracts: June 27, 2016 Submission: July 1, 2016 Notification: July 29, 2016 Camera-ready: August 12, 2015 Organizers == Valentina Ivanova, Linköping University, Sweden Patrick Lambrix, Linköping University, Sweden Steffen Lohmann, Fraunhofer IAIS, Germany Catia Pesquita, University of Lisbon, Portugal
Last CfP: Interacting with Multimedia Content in the Social Semantic Web
Submission Deadline this Friday!! IMC-SSW 2008 - CALL FOR PAPERS International Workshop on Interacting with Multimedia Content in the Social Semantic Web (IMC-SSW 2008) http://aksw.org/Events/2008/IMCSSW in conjunction with the 3rd International Conference on Semantic and Digital Media Technologies (SAMT 2008) Koblenz, Germany, Dez 2008 http://samt2008.uni-koblenz.de/ Submission Deadline: 14th September 2008 Media sharing and social networking websites have attracted many millions of users resulting in vast collections of user generated content. The contents are typically poorly structured and spread over several platforms, each supporting specific media types. With the increasing growth and diversity of these websites, new ways to access and manage the contents are required - both within and across web platforms. TOPICS OF INTEREST This workshop focuses on the interaction with these multimedia contents. We are particularly interested in contributions that follow Web 2.0 principles of simplicity and/or social navigation in combination with the representation, annotation, and linking power of the Semantic Web. Topics of interest include, but are not limited to: * Navigating and visualizing semantically annotated multimedia content * Social semantic tagging of multimedia content * Social semantic recommendation and search of multimedia content * Semantic mashups of multimedia content across websites * Semantic annotation of multimedia content in Wikis and Weblogs * Interaction with multimedia content on the semantic desktop * Semantic user interfaces for media sharing and social networking websites * Experiences and use cases regarding the interaction with multimedia content on the Social Semantic Web TARGET AUDIENCE * Researchers of the Semantic Web and Knowledge Representation communities interested in interaction aspects * Researchers of the Multimedia and Human-Computer-Interaction communities interested in semantic aspects * Developers of web applications, interaction designers, and information architects SUBMISSION TYPES * Full papers (8-12 Pages) * Position papers (4-8 Pages) * Poster and Demo papers (3-4 Pages) IMPORTANT DATES * 14th September: Submission Deadline * 5th October: Author's Notification * 26th October: Camera ready * 3rd Dezember: Workshop COMMITTEES Organizers: Sören Auer, University of Leipzig, Germany Sebastian Dietzold, University of Leipzig, Germany Steffen Lohmann, University of Duisburg, Germany Jürgen Ziegler, University of Duisburg, Germany Program Comittee Scott Bateman, University of Saskatchewan, Canada Simone Braun, FZI Research Center for IT, Germany Davide Eynard, Politecnico di Milano, Italy Michael Hausenblas, Johanneum Research, Austria Andreas Hess, Lycos Europe GmbH, Germany Knud Möller, DERI Galway, Ireland Jasminko Novak, University of Zurich, Switzerland Alexandre Passant, Université Paris-Sorbonne, France Yves Raimond, Queen Mary University of London, UK Harald Sack, University of Potsdam, Germany Sebastian Schaffert, Salzburg Research, Austria Andreas Schmidt, FZI Research Center for IT, Germany -- Event resources --- RSS-Feed: http://blog.aksw.org/feed/atom/?tag=imcssw iCal Calender: http://www.google.com/calendar/ical/l0m29bt3mp79jhobmf3u8ufu88%40group.calendar.google.com/public/basic.ics RDF: http://demo.ontowiki.net/resource/export/?r=http%3A%2F%2F3ba.se%2Fconferences%2FIMCSSW2008m=http%3A%2F%2F3ba.se%2Fconferences%2Foutput=xmlfile=imc-ssw-2008.rdf OntoWiki-View: http://demo.ontowiki.net/resource/view/IMCSSW2008?m=http%3A%2F%2F3ba.se%2Fconferences%2F ---
RelFinder - Version 1.0 released
Hi all, we are happy to announce the release of version 1.0 of the RelFinder. The RelFinder is a tool that extracts and visualizes relationships between given objects in Semantic Web datasets and makes these relationships interactively explorable. It advances the idea of the DBpedia Relationship Finder by offering improved visualization and exploration techniques and working with any dataset that provides SPARQL access. Some key features are: - relationships even between more than two given objects (all visualized in one 'relationship graph') - easy configurability of the accessed dataset and search parameters (via settings menu or config file) - aggregations and global filters (based on relationship length, class, link type, connectivity) - highly interactive visualization (highlighting, red thread, pickpin, details on demand, animations) The RelFinder is implemented in Adobe Flex and requires only a Webbrowser with installed Flash Player. Give it a try at http://relfinder.semanticweb.org and discover relationships that you have not been aware of before ;-) Thanks go to Jens Lehmann, Jürgen Ziegler, Lena Tetzlaff, Laurent Alquier Sebastian Hellmann. Best regards, Philipp, Timo Steffen
Re: RelFinder - Version 1.0 released
Thanks Kingsley, I quickly added URIBurner as a dataset but cannot see the added value w.r.t. the RelFinder - your Google-Apple example produces mainly seeAlso links, which are not that helpful to discover new relationships. Here is the link with the parameters: http://relfinder.semanticweb.org/RelFinder.swf?obj1=R29vZ2xlfGh0dHA6Ly9kYnBlZGlhLm9yZy9yZXNvdXJjZS9Hb29nbGU=obj2=QXBwbGV8aHR0cDovL2RicGVkaWEub3JnL3Jlc291cmNlL0FwcGxlname=VVJJQnVybmVyabbreviation=YnVybmVydescription=QSBzZXJ2aWNlIHRoYXQgZGVsaXZlcnMgUkRGLWJhc2VkIHN0cnVjdHVyZWQgZGVzY3JpcHRpb25zIG9mIFdlYiBhZGRyZXNzYWJsZSByZXNvdXJjZXMgKGRvY3VtZW50cyBvciByZWFsIHdvcmxkIG9iamVjdHMpIGluIGEgdmFyaWV0eSBvZiBmb3JtYXRzIHRocm91Z2ggR2VuZXJpYyBIVFRQIFVSSXMuendpointURI=aHR0cDovL3VyaWJ1cm5lci5jb20vc3BhcnFsisVirtuoso=dHJ1ZQ==useProxy=dHJ1ZQ==autocompleteURIs=aHR0cDovL3d3dy53My5vcmcvMjAwMC8wMS9yZGYtc2NoZW1hI2xhYmVsimageURIs=aHR0cDovL3htbG5zLmNvbS9mb2FmLzAuMS9kZXBpY3Rpb24=linkURIs=aHR0cDovL3htbG5zLmNvbS9mb2FmLzAuMS9wYWdlmaxRelationLegth=Mg== Once again a demonstration that variety of link types is a big challenge when automatically generating RDF data (link variety is indeed important for the RelFinder). Anyways - thanks for the pointer. We are generally interest in integrating further datasets to the RelFinder's default installation (as long as they produce valuable relationships). Further ideas and links are welcome! Steffen -- Kingsley Idehen schrieb: Steffen, Very cool! Please add: http://uriburner.com/sparql to the default list of SPARQL endpoints. The effect of doing this ups the implications of this tool exponentially! Try it yourself e.g. Google to Apple (use the DBpedia URIs). The density of the graph, the response time provide quite an experience to the user (especially a Linked Data neophyte). Notes about URIBurner: 1. Quad Store is populated progressively with contributions by anyone that uses the service to seek structured descriptions of an HTTP accessible resource via ODE bookmarklets, browser extensions, or SPARQL FROM Clause that references external Data Sources 2. As part of the graph construction process it not only performs RDF model transformation (re. non RDF data sources); it also performs LOD cloud lookups and joins, ditto across 30+ Web 2.0 APIs 3. Anyone with a Virtuoso installation that enables the RDF Mapper VAD (which is how the Sponger Middleware is packaged) ends up with their own personal or service specific variant of URIBurner. Again, great stuff, this tool is going to simplify the message, a lot re., Linked Data and its penchant for serendipitous discovery of relevant things.
ICWE 2011: Call for Tutorials
Since a special focus of ICWE 2011 will be on Web Data Engineering, it would be great to have also one LOD-related tutorial next year. - ICWE 2011: CALL FOR TUTORIALS 11th International Conference on Web Engineering (ICWE 2011) June 20-24, 2011, Paphos, Cyprus http://icwe2011.webengineering.org/ Submission Deadline: February 14, 2011 - The International Conference on Web Engineering (ICWE) aims at promoting scientific and practical excellence on Web Engineering, and at bringing together researchers and practitioners working in technologies, methodologies, tools, and techniques used to develop and maintain Web-based applications leading to better systems, and thus to enabling and improving the dissemination and use of content and services through the Web. *** Call for Tutorials *** ICWE 2011 invites proposals for tutorials that will provide conference participants with the opportunity to gain knowledge and insights in a broad range of Web Engineering areas. Participants at the tutorials include scientists and practitioners, who are seeking to gain a better understanding of the technologies, methodologies, tools, and techniques used to develop and maintain Web-based applications. Proposed tutorials can be either half-day long (3 hours) or full-day long (6 hours). Tutorial proposals should address issues related to the topics of the conference. Topics not mentioned in the topics of interest list are also encouraged as long as they are of special relevance to ICWE 2011. Tutorial presenters will receive an honorarium depending on the number of attendees and one free registration for ICWE 2011. The precise amount of the honorarium will be determined after the early registration deadline. This amount is per tutorial, not per speaker. Travel and accommodation arrangements are up to the speakers. Tutorials that have less than 8 early registrants will face the risk of cancellation. *** Submission instructions *** Tutorial proposals must clearly identify the intended audience and its assumed background. Proposals must be no more than 3 pages and must provide a sense of both the scope of the tutorial and depth within the scope. The intended length of the tutorial (3 or 6 hours) should also be indicated, together with justification that a high-quality presentation will be achieved within the chosen time frame. Proposals should also include contact information and a brief bio of the presenters. If the tutorial has been given previously, the proposal should include where the tutorial has been given and how it will be modified for ICWE 2011. In summary, tutorial proposals must include the following information: * Tutorial title. * Tutorial abstract: 1-2 paragraphs describing the goals and contents of the tutorial (will be included in the conference registration materials). * Intended Length: half-day (3 hours) or full-day (6 hours). * Description of the tutorial providing its scope (general topic area) and depth, as well as its aims and learning outcomes. * Intended audience and assumed background knowledge. * Presenter(s) contact information: name, affiliation, email, mailing address, phone, fax. * Presenter(s) short biography demonstrating that she/he is an expert on the subject of the tutorial (will be included in the conference registration materials). * Relevant references. * Indication if the proposed tutorial has been given previously. * Sample slides of the tutorial, if available. Proposals must be in PDF format and submitted electronically to the tutorial chairs (tutorials [at] icwe2011.webengineering.org) no later than the submission deadline. Presenters of accepted tutorials will be required to prepare a one-page summary of the tutorial by the camera-ready copy deadline to be included in the Springer LNCS main conference proceedings. Presenters should also make the slides available to the ICWE 2011 participants, both in hardcopy and online. *** Important Dates *** * Submission deadline: February 14, 2011 * Notification of acceptance: April 1, 2011 * Camera-ready version: April 28, 2011 *** Tutorial Chairs *** * Cesare Pautasso, University of Lugano, Switzerland * Steffen Lohmann, Universidad Carlos III de Madrid, Spain *** Contact Information *** In case of inquiries, please contact the tutorial chairs at: tutorials [at] icwe2011.webengineering.org
ANN: Modular Unified Tagging Ontology (MUTO)
Hi all, we are pleased to announce version 1.0 release of the Modular Unified Tagging Ontology (MUTO). MUTO is an attempt to unify the core concepts of existing tagging ontologies (such as TAGS, TagOnt, MOAT, etc.) in one consistent schema. We reviewed available ontologies and created a compact core ontology (in OWL Lite) that supports different forms of tagging, such as private, group, automatic, and semantic tagging. MUTO should thus not be considered as yet another tagging ontology but as a unification of existing approaches. We hope it will be useful to the community and a helpful starting point for future extensions. For more information, please see the specification at http://purl.org/muto/core# (redirect to http://muto.socialtagging.org) Best, Steffen -- Steffen Lohmann - DEI Lab Computer Science Department, Universidad Carlos III de Madrid Avda de la Universidad 30, 28911 Leganés, Madrid (Spain), Office: 22A20 Phone: +34 916 24-9419, http://www.dei.inf.uc3m.es/slohmann/
Re: ANN: Modular Unified Tagging Ontology (MUTO)
On 17.11.2011 17:35, Kingsley Idehen wrote: On 11/17/11 9:34 AM, Steffen Lohmann wrote: Hi all, we are pleased to announce version 1.0 release of the Modular Unified Tagging Ontology (MUTO). MUTO is an attempt to unify the core concepts of existing tagging ontologies (such as TAGS, TagOnt, MOAT, etc.) in one consistent schema. We reviewed available ontologies and created a compact core ontology (in OWL Lite) that supports different forms of tagging, such as private, group, automatic, and semantic tagging. MUTO should thus not be considered as yet another tagging ontology but as a unification of existing approaches. We hope it will be useful to the community and a helpful starting point for future extensions. For more information, please see the specification at http://purl.org/muto/core# (redirect to http://muto.socialtagging.org) Best, Steffen Great stuff! Wondering if you could add rdfs:isDefinedBy relations to this ontology? Doing so makes it much more navigable. Sure. I just forgot adding it. Thanks to point me to this, Kingsley. The rdfs:isDefinedBy statements are now included. Here's the current state of affairs showcasing limited TBox navigability: 1. http://linkeddata.uriburner.com/describe/?url=http://purl.org/muto/core 2. http://linkeddata.uriburner.com/describe/?url=http%3A%2F%2Fpurl.org%2Fmuto%2Fcore%23tagMeaningurilookup=1 . Once you add the isDefinedBy relations, the ontology description page becomes the launch pad for powerful FYN exploration across both the ontology TBox and and associated ABox. Looks very nice. Thanks, Steffen -- Steffen Lohmann - DEI Lab Computer Science Department, Universidad Carlos III de Madrid Avda de la Universidad 30, 28911 Leganés, Madrid (Spain), Office: 22A20 Phone: +34 916 24-9419, http://www.dei.inf.uc3m.es/slohmann/
Re: ANN: Modular Unified Tagging Ontology (MUTO)
On 17.11.2011 20:03, Richard Cyganiak wrote: Hi Steffen, On 17 Nov 2011, at 14:34, Steffen Lohmann wrote: MUTO should thus not be considered as yet another tagging ontology but as a unification of existing approaches. I'm curious why you decided not to include mappings (equivalentClass, subProperty etc) to the existing approaches. Good point, Richard. I thought about it but finally decided to separate these alignments from the core ontology - therefore the MUTO Mappings Module (http://muto.socialtagging.org/core/v1.html#Modules). SIOC and SKOS can be nicely reused but aligning MUTO with the nine reviewed tagging ontologies is challenging and would result in a number of inconsistencies. This is mainly due to a different conceptual understanding of tagging and folksonomies in the various ontologies. To give some examples: - Are tags with same labels merged in the ontology (i.e. are they one instance)? - Is the number of tags per tagging limited to one or not? - In case of semantic tagging: Are single tags or complete taggings disambiguated? - How are the creators of taggings linked? - Are tags from private taggings visible to other users or not? Apart from that, I would have risk that MUTO is no longer OWL Lite/DL which I consider important for a tagging ontology (reasoning of folksonomies). The current version of the MUTO Mappings Module provides alignments to Newman's popular TAGS ontology (mainly for compatibility reasons). Have a look at it and you'll get an idea of the difficulties in correctly aligning MUTO with existing tagging ontologies. Best, Steffen -- Steffen Lohmann - DEI Lab Computer Science Department, Universidad Carlos III de Madrid Avda de la Universidad 30, 28911 Leganés, Madrid (Spain), Office: 22A20 Phone: +34 916 24-9419, http://www.dei.inf.uc3m.es/slohmann/
Ann: VOWL 2, ProtegeVOWL, WebVOWL
Hi all, we are glad to announce that version 2.0 of the Visual Notation for OWL Ontologies (VOWL) has been published a few weeks ago. Along with the specification, we released a Protégé plugin and a web tool that implement large parts of VOWL. The works may be of interest to those of you who would like to visualize (smaller) ontologies in an intuitive way. They can be tested online at: http://vowl.visualdataweb.org We are currently working on an improved JSON structure and additional functionality for the web tool (WebVOWL) to allow for an easier transformation of OWL to JSON and to provide a more compact visualization for larger ontologies. We are also planning to integrate further visual elements from the spec into the Protégé plugin (ProtégéVOWL). VOWL itself will also be advanced in the future to consider further OWL elements (particularly from OWL 2) and additional cases. Note that the focus of VOWL 2 is on the ontology schema (i.e. the classes, properties and datatypes, sometimes called TBox), while the focus of VOWL 1 was on the integrated representation of classes and individuals (TBox and ABox) - which is, however, still possible with VOWL 2. On behalf of the VOWL team, Steffen -- Steffen Lohmann . Institute for Visualization and Interactive Systems University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn
Re: Ann: VOWL 2, ProtegeVOWL, WebVOWL
Thanks for your comments, Kingsley, Alfredo. A live service where you can upload an OWL ontology and get it visualized with WebVOWL would indeed be very nice - but we are not there yet. The next step is a new JSON structure that makes it easier to transform ontologies into the WebVOWL format and to integrate WebVOWL with other projects. In the meantime, the VOWL plugin for Protégé (ProtégéVOWL) can be used to visualize and explore arbitrary ontologies: http://vowl.visualdataweb.org/protegevowl.html (note that it does not implement the complete VOWL spec and works with Java 1.7 at the moment). Steffen -- On 12.05.2014 20:11, Kingsley Idehen wrote: On 5/12/14 1:28 PM, Alfredo Serafini wrote: do you plan to release it for generale usage and integration on live services? Well that's for Steffen Lohmann and Co. to answer, I simply indicated (by my reply) that this project has produced a very useful tool :) Kingsley 2014-05-12 19:27 GMT+02:00 Alfredo Serafini ser...@gmail.com mailto:ser...@gmail.com: wonderful!! :-) 2014-05-12 17:30 GMT+02:00 Kingsley Idehen kide...@openlinksw.com mailto:kide...@openlinksw.com: On 5/12/14 11:04 AM, Steffen Lohmann wrote: Hi all, we are glad to announce that version 2.0 of the Visual Notation for OWL Ontologies (VOWL) has been published a few weeks ago. Along with the specification, we released a Protégé plugin and a web tool that implement large parts of VOWL. The works may be of interest to those of you who would like to visualize (smaller) ontologies in an intuitive way. They can be tested online at: http://vowl.visualdataweb.org We are currently working on an improved JSON structure and additional functionality for the web tool (WebVOWL) to allow for an easier transformation of OWL to JSON and to provide a more compact visualization for larger ontologies. We are also planning to integrate further visual elements from the spec into the Protégé plugin (ProtégéVOWL). VOWL itself will also be advanced in the future to consider further OWL elements (particularly from OWL 2) and additional cases. Note that the focus of VOWL 2 is on the ontology schema (i.e. the classes, properties and datatypes, sometimes called TBox), while the focus of VOWL 1 was on the integrated representation of classes and individuals (TBox and ABox) - which is, however, still possible with VOWL 2. On behalf of the VOWL team, Steffen -- Steffen Lohmann . Institute for Visualization and Interactive Systems University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 tel:%2B49%20711%20685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn http://www.vis.uni-stuttgart.de/%7Elohmansn Great Job!! -- Regards, Kingsley Idehen Founder CEO OpenLink Software Company Web: http://www.openlinksw.com Personal Weblog: http://www.openlinksw.com/blog/~kidehen http://www.openlinksw.com/blog/%7Ekidehen Twitter Profile: https://twitter.com/kidehen Google+ Profile: https://plus.google.com/+KingsleyIdehen/about LinkedIn Profile: http://www.linkedin.com/in/kidehen -- Regards, Kingsley Idehen Founder CEO OpenLink Software Company Web:http://www.openlinksw.com Personal Weblog:http://www.openlinksw.com/blog/~kidehen Twitter Profile:https://twitter.com/kidehen Google+ Profile:https://plus.google.com/+KingsleyIdehen/about LinkedIn Profile:http://www.linkedin.com/in/kidehen -- Steffen Lohmann . Institute for Visualization and Interactive Systems University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn
Add: Ann: VOWL 2, ProtegeVOWL, WebVOWL
As there were several requests: We recompiled the VOWL plugin for Protégé so that it also works with the older Java version 1.6 now (which is the Java version that comes with the bundle installation of Protégé 4.3). The new JAR file (for those who got errors with the old one) is available at: http://vowl.visualdataweb.org/protegevowl.html Steffen -- On 12.05.2014 17:04, Steffen Lohmann wrote: Hi all, we are glad to announce that version 2.0 of the Visual Notation for OWL Ontologies (VOWL) has been published a few weeks ago. Along with the specification, we released a Protégé plugin and a web tool that implement large parts of VOWL. The works may be of interest to those of you who would like to visualize (smaller) ontologies in an intuitive way. They can be tested online at: http://vowl.visualdataweb.org We are currently working on an improved JSON structure and additional functionality for the web tool (WebVOWL) to allow for an easier transformation of OWL to JSON and to provide a more compact visualization for larger ontologies. We are also planning to integrate further visual elements from the spec into the Protégé plugin (ProtégéVOWL). VOWL itself will also be advanced in the future to consider further OWL elements (particularly from OWL 2) and additional cases. Note that the focus of VOWL 2 is on the ontology schema (i.e. the classes, properties and datatypes, sometimes called TBox), while the focus of VOWL 1 was on the integrated representation of classes and individuals (TBox and ABox) - which is, however, still possible with VOWL 2. On behalf of the VOWL team, Steffen -- Steffen Lohmann . Institute for Visualization and Interactive Systems University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn
CfP: VISUAL workshop @ EKAW
generation - augmented human reasoning - novel visualizations of data and metadata - visual approaches for semantic similarity measurement - exploratory information visualization - domain-specific visual analytics - interactive systems in business intelligence - cognition and sensemaking in visual contexts - evaluation of interactive systems Submission Guidelines == Paper submission and reviewing for this workshop will be electronic via EasyChair. The papers should be written in English, following Springer LNCS format, and be submitted in PDF. The following types of contributions are welcome: - Full research papers (8-12 pages); - Experience papers (8-12 pages); - Position papers (6-8 pages); - Short research papers (4-6 pages); - System papers (4-6 pages). Accepted papers will be published as a volume in the CEUR Workshop Proceedings series. Important Dates == - Submission: September 19, 2014 - Notification: October 17, 2014 - Camera-ready: November 7, 2014 - Workshop: November 24/25, 2014 Organizers == - Valentina Ivanova, Linköping University, Sweden - Tomi Kauppinen, Aalto University, Finland, and University of Bremen, Germany - Steffen Lohmann, University of Stuttgart, Germany - Suvodeep Mazumdar, The University of Sheffield, UK - Catia Pesquita, University of Lisbon, Portugal - Toomas Timpka, Linköping University, Sweden - Kai Xu, Middlesex University, UK
Re: CfP: VISUAL workshop @ EKAW
Sarven, I forward your questions to Tomi who is responsible for linkedscience.org . We just use that domain to host the web page of our workshop. The page could have also been hosted on any other domain, since I do not see a direct relation been linkedscience.org and our workshop (but maybe Tomi sees it). Best, Steffen -- On 04.09.2014 11:51, Sarven Capadisli wrote: On 2014-09-04 11:36, Steffen Lohmann wrote: Submission Guidelines == Paper submission and reviewing for this workshop will be electronic via EasyChair. The papers should be written in English, following Springer LNCS format, and be submitted in PDF. I am struggling to understand the role that PDF plays towards Linked Science. Would you mind helping me understand: * What is Linked Science? * How does PDF (better?) contribute towards fulfilling the Linked Science promise in comparison to the alternatives methods? * At what granularity is the information in the papers that's submitted to this Linked Science workshop preserved? Which information is not? And, most importantly, which information should be preserved for future research(ers)? What was your decision process? Thanks, -Sarven http://csarven.ca/#i -- Steffen Lohmann . Institute for Visualization and Interactive Systems University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn
Updated CfP: Visualizations and User Interfaces for Knowledge Engineering and Linked Data Analytics
(but are not limited to): - interactive semantic systems - design of interactive systems - visual pattern discovery - (semi-)automatic hypothesis generation - augmented human reasoning - novel visualizations of data and metadata - visual approaches for semantic similarity measurement - exploratory information visualization - domain-specific visual analytics - interactive systems in business intelligence - cognition and sensemaking in visual contexts - evaluation of interactive systems Submission Guidelines == Paper submission and reviewing for this workshop will be electronic via EasyChair. The papers should be written in English, following Springer LNCS format, and be submitted in PDF. The following types of contributions are welcome: - Full research papers (8-12 pages); - Experience papers (8-12 pages); - Position papers (6-8 pages); - Short research papers (4-6 pages); - System papers (4-6 pages). Accepted papers will be published as a volume in the CEUR Workshop Proceedings series. Important Dates == - Submission: September 30, 2014 - Notification: October 21, 2014 - Camera-ready: November 11, 2014 - Workshop: November 24 or 25, 2014 Organizers == - Valentina Ivanova, Linköping University, Sweden - Tomi Kauppinen, Aalto University, Finland, and University of Bremen, Germany - Steffen Lohmann, University of Stuttgart, Germany - Suvodeep Mazumdar, The University of Sheffield, UK - Catia Pesquita, University of Lisbon, Portugal - Toomas Timpka, Linköping University, Sweden - Kai Xu, Middlesex University, UK -- Steffen Lohmann . Institute for Visualization and Interactive Systems University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 . http://www.vis.uni-stuttgart.de/~lohmansn
[Ann] WebVOWL 0.3 - Visualize your ontology on the web
Hi all, we are glad to announce the release of WebVOWL 0.3, which integrates our OWL2VOWL converter now. WebVOWL works in modern web browsers without any installation so that ontologies can be instantly visualized. Check it out at: http://vowl.visualdataweb.org/webvowl.html To the best of our knowledge, WebVOWL is the first comprehensive ontology visualization completely based on open web standards (HTML, SVG, CSS, JavaScript). It implements VOWL 2, which has been designed in a user-oriented process and is clearly specified at http://vowl.visualdataweb.org (incl. references to scientific papers). Please note that: - WebVOWL is a tool for ontology visualization, not for ontology modeling. - VOWL considers many language constructs of OWL but not all of them yet. - VOWL focuses on the visualization of the TBox of small to medium-size ontologies but does not sufficiently support the visualization of very large ontologies and detailed ABox information for the time being. - WebVOWL 0.3 implements the VOWL 2 specification nearly completely, but the current version of the OWL2VOWL converter does not. These issues are subject to future work. Have fun with it! On behalf of the VOWL team, Steffen -- Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS) University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
Re: [Ann] WebVOWL 0.3 - Visualize your ontology on the web
Thank you, Colin. I am glad to hear that. Your RDFS ontology looks indeed quite nice in WebVOWL. Have fun with it, Steffen -- On 22.12.2014 13:48, Colin Maudry wrote: Great job! I'm particularly happy because it shows good support for an RDFS ontology (http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/dita/ns). Lately I see new tools that mostly support OWL ontologies, so thanks a lot! Colin Maudry @CMaudry -- Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS) University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
Re: [Ann] WebVOWL 0.3 - Visualize your ontology on the web
Kingsley, Timothy, Sarven, Melvin, Ali,
On 22.12.2014 16:20, Kingsley Idehen wrote:
I just want the URI of the current node in the graph to be a live link
i.e., an exit point from the visualization tool to the actual source.
You offer something close to this in the side panel, but its scoped to
the entire ontology rather than a selected term.
I am suggesting you make the selected node text e.g., Tagging an
HTTP URI (hyperlink) via a href=http://purl.org/muto/core#Tagging
Tagging/a .
[1] http://susepaste.org/36507989 -- screenshot showing what's
currently offered
The URI and link is already there! The labels in the Selection Details
(e.g., Tagging) are hyperlinks that you can click on to go to the
actual URIs. As it does not seem to be that clear (and the hyperlink URI
may not be properly shown in all web browsers), we already discussed to
add further tooltips with the URIs in the GUI.
On 22.12.2014 17:26, Timothy W. Cook wrote:
You call it the label, Protege calls it the Description and in RDF/XML
it is the URI fragment after the # symbol in the rdf:about attribute.
So, I am not exactly sure what it is supposed to be called, I call it
the 'name'; for what shows up in the tooltip. Which is exactly the
same thing as what is in the circle, rectangle, etc. on the page.
We display the rdfs:label of the elements in the language that is
selected in the sidebar. If IRI-based is selected as language, the
label is generated from the last part of the URI. The tooltips with the
full label are helpful in cases where long labels are abbreviated in the
visualization.
In the sidebar 'Description' I do have a dc:description inside
the owl:Ontology definition. However, it doesn't display in WebVOWL.
Usually, the dc:description annotation for the ontology is shown in the
sidebar. Here is an example where it works:
http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/muto/core
But my question was about the possibility of displaying (in tooltip or
sidebar) other Dublin Core metadata for each class and property. This
would be really great documentation about the ontology being viewed.
We plan to add additional elements to the selection details. Dublin Core
is a candidate here, even though we cannot consider all possible
vocabularies (remember that VOWL has mainly been designed for OWL and
not for Dublin Core, SKOS, etc.). We will try to find a more generic
approach of considering metadata in the future.
On 23.12.2014 00:17, Sarven Capadisli wrote:
I would suggest that, either use ? and let the server trigger everything
(which is IMO the right thing to do here, and with simpler/better
caching possibilities), or stick to # and let JavaScript manage it all
(as is now).
On 23.12.2014 02:53, Melvin Carvalho wrote:
The standard ? is a way of creating a cool URI that can be shared
bookmarked etc.
The # character in HTTP is unfortunately overloaded to do a few
things, which often causes confusion. Primarily linked data people
should be aware that the # character is a mechanism to point to linked
data inside a document (frag ids). It can be used in a few other ways
sure, but I think in this case the motivation for hiding the query
from the server is not high.
You can even let the server ignore the query string in this case and
just have the split function detect ('#') or ('?')
Thanks for your comments on that. We actually call the server in the
background to process the ontology files, as we use our OWL2VOWL
converter here that is based on Java and the OWL API.
Using '?' for the requested ontology IRI and '#' for a part of it (e.g.,
a selected class) sounds quite canonical to me. Will be an issue for the
next WebVOWL version (but not for the next couple of days ;-) ).
On 22.12.2014 14:01, Ali ABBASSENE wrote:
Is there any open-source version of WebVOWL ? Or any stencil of SVG files for
the VOWL graphical representation ?
Because I am planning to implement a VOWL enabled editor under the versatile
modeler Oryx-editor (https://code.google.com/p/oryx-editor/).
I am glad to hear that. Feel free to use VOWL for your editor, which
comes with a creative commons license.
WebVOWL is open source! It is released under the MIT license. The files
are available at http://vowl.visualdataweb.org/webvowl.html#installation
The visual language itself (VOWL 2) is specified at
http://vowl.visualdataweb.org/v2 . The specification contains the SVG
code of all VOWL elements (+ style information in a separate CSS).
Just go ahead! I am looking forward to the result.
Cheers,
Steffen
--
Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS)
University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart
Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
