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✎ pl:dydaktyka:semweb:2016:labs:intro
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====== Introduction to the Semantic Web ====== ^ Last verification: | 20151007 | ^ Tools required for this lab: | -- | ===== Before the lab ===== Reading: * Semantic Web begins here: {{..:..:semantic_web-sciam.pdf|The Semantic Web (Scientific American, 2001)}} * [[http://www.slate.com/articles/technology/future_tense/2015/11/why_does_google_say_jerusalem_is_the_capital_of_israel.html|Why Does Google Say Jerusalem Is the Capital of Israel?]] * [[#if_you_want_to_know_more|If you want to know more...]] ===== Introduction ===== Lecture: * {{pl:dydaktyka:semweb:2015:eis2015semweb-overview.pdf|Semantic Web: 1 - Overview}} (2015) Slides: * [[http://www.w3.org/People/Ivan/CorePresentations/SW_QA/|Questions (and Answers) on the Semantic Web]] ===== Lab instructions ===== ==== - Extracting RDF metadata [5 minutes] ==== Semantic Web -aware tools and technologies are around.... - Annotating flickr images: - Using <wrap caution>[[http://www.kanzaki.com/docs/sw/img-annotator.html|Image Annotator]]</wrap> tool select regions on the picture and add metadata - Follow the instructions and generate RDF data for the image - Copy the source (//there is no need to understand it - this is messy XML syntax so we won't use it//) and paste it in the [[http://www.w3.org/RDF/Validator/|W3C RDF Validator]] - choose ''Triples and Graph'' option and click ''Parse RDF''. - Analyze the triples (in table) and the graph. Copy it into the [[#report]] 8-). ==== - Common Vocabularies [10 minutes] ==== - Acquaint yourself with the following vocabularies: [[http://www.w3.org/TR/skos-primer/|SKOS]], [[http://www.dublincore.org/metadata-basics/|Dublin Core]], [[http://xmlns.com/foaf/spec/|FOAF]] - 8-) Answer the questions: - What is each vocabulary for? - What applications use them? - Browse thruogh more semantic vocabularies [[http://esw.w3.org/TaskForces/CommunityProjects/LinkingOpenData/CommonVocabularies|here]]. Choose one vocabulary and describe it shortly in your report 8-). ==== - FOAF [10 minutes] ==== - Create your FOAF file with: <wrap caution>[[http://www.ldodds.com/foaf/foaf-a-matic|foaf-o-matic]]</wrap> - Save your FOAF file. Put it in the report 8-). - Publish your file so that it can be referenced with URL. Put the URL into the report 8-) - Visualize your FOAF file with <wrap caution>[[http://foaf-visualizer.gnu.org.ua/|FOAF.Vix]]</wrap>. Simply put the URL as an ''uri'' argument to the FOAF.Vix, e.g.: http://foaf-visualizer.gnu.org.ua/?nocache=1&uri=http://home.agh.edu.pl/~kkutt/foaf.rdf - Add more friends using their FOAF files. Visualize again. ==== - Linked Open Data [20 minutes] ==== - Read about the [[http://en.wikipedia.org/wiki/Linked_Data|Linked Data]] idea (and the [[http://www.w3.org/DesignIssues/LinkedData.html|original note by T. Berners-Lee, plus the 5 star system]]) - Go the the webpage of the [[http://esw.w3.org/SweoIG/TaskForces/CommunityProjects/LinkingOpenData|Linking Open Data]] project. * Analyze the [[http://lod-cloud.net/versions/2014-08-30/lod-cloud_colored.svg|clickable LOD diagram]], choose 5 datasets and in a few words describe them in the report (what information do they contain?) 8-) ==== - Semantic Web tools and applications [30 minutes] ==== Browse the following websites and get to know various Semantic Web tools and applications: - 8-) [[http://www.w3.org/wiki/ConverterToRdf|ConverterToRdf]]: which in your opinion are the most important? What Converter would you add (converting from what format)? - 8-) [[http://esw.w3.org/TaskForces/CommunityProjects/LinkingOpenData/SemWebClients|Linked Data Browsers]]: how many of them are up and running? - 8-) [[http://www.mkbergman.com/sweet-tools/|Sweet Tools]]: select one Annotator (tool for semantically annotating resources; you can simply put "Annotator" in search box) and describe it's capabilities. - 8-) Choose one application from [[http://readwrite.com/2009/12/02/top_10_semantic_web_products_of_2009|Top 10 Semantic Web Products of 2009]] or [[http://readwrite.com/2010/12/29/top_10_semantic_web_products_of_2010|Top 10 Semantic Web Products of 2010]], read more about it and describe why this one is considered as Semantic Web application. ===== Control questions ===== //(Based on this lab and first lecture)// * How one can add semantic annotation to a web page? * Explain the Semantic Web Stack of technologies. * What is the main syntax for RDF? What are its advantages over other syntaxes? * What is the role of the ontologies in the Semantic Web? * What are the 4 principles of Linked Data? ===== Report ===== - Answer the questions marked 8-) in this lab. - (Optionally) Add extra //feedback// section in the report to earn extra credit. ===== If you want to know more ===== Reading: * http://www.w3.org/People/Ivan/CorePresentations/RDFTutorial/ * http://www.w3.org/DesignIssues/Semantic.html * http://logicerror.com/semanticWeb-long * http://www.xml.com/pub/a/2001/01/24/rdf.html Slides: * http://www.slideshare.net/Terry34/a-semantic-web-primer-1-chapter * http://www.slideshare.net/marakana/a-hands-on-overview-of-the-semantic-web-5533841 * http://dret.net/lectures/web-fall09/semweb Videolectures: * http://videolectures.net/pintro05_studer_swci/ * http://videolectures.net/solomon_sure_stsw/ * http://videolectures.net/iswc08_hendler_ittsw/ * http://www.youtube.com/watch?v=OGg8A2zfWKg&feature=player_embedded#! TED talks: * http://www.ted.com/talks/tim_berners_lee_on_the_next_web Projects: * [[http://semanticweb.org/wiki/Main_Page|Semantic Web wiki]] * [[http://www.kanzaki.com/info/webwho.rdf|Masahide Kanzaki's projects]] Blog articles: * http://decentralyze.com/2010/03/22/the-why-and-how-of-linked-data/ Articles: * [[http://www.readwriteweb.com/archives/google_buys_semantic_web_database_metaweb.php|The Semantic wedge: Freebase, Powerset and Twine]] * [[http://googleblog.blogspot.com/2011/06/introducing-schemaorg-search-engines.html|Google introduces schema.org]] * [[http://www.huffingtonpost.com/steve-hamby/semantic-web-technology_b_1228883.html|Steve Hamby - 2012: The Year of the Semantic Web]] * [[http://searchengineland.com/trust-unique-identification-impact-semantic-search-235673|How Trust & Unique Identification Impact Semantic Search]] - jak Google próbuje ustalić Prawdę Discussion: * [[https://news.ycombinator.com/item?id=8510401|Is the semantic web still a thing?]]
pl/dydaktyka/semweb/2016/labs/intro.1474729561.txt.gz
· ostatnio zmienione: 2019/06/27 15:55 (edycja zewnętrzna)
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