PowerPoint PresentationFOAF OverviewFOAF at a GlanceBroad CategoriesBasic ExampleFOAF ExampleSlide 7Steven SeidaKeven L. AtesFriend of a Friend (FOAF)From Wikipedia and http://xmlns.com/foaf/spec/FOAF Overview•The FOAF Vocabulary is built on RDF Schema and OWL (Web Ontology Language)•It has numerous class and property resources•The classes and properties can be divided into broad categories•The classes and properties have internal definitions that assist with reasoning using:•rdf:type (multiple)•rdfs:subClassOf•rdfs:subPropertyOf•rdfs:domain•rdfs:range•Other advanced OWL constructsFOAF at a Glance Classes: | Agent | Document | Group | Image | OnlineAccount | OnlineChatAccount | OnlineEcommerceAccount | OnlineGamingAccount | Organization | Person | PersonalProfileDocument | Project | Properties: | accountName | accountServiceHomepage | aimChatID | based_near | birthday | currentProject | depiction | depicts | dnaChecksum | family_name | firstName | fundedBy | geekcode | gender | givenname | holdsAccount | homepage | icqChatID | img | interest | isPrimaryTopicOf | jabberID | knows | logo | made | maker | mbox | mbox_sha1sum | member | membershipClass | msnChatID | myersBriggs | name | nick | openid | page | pastProject | phone | plan | primaryTopic | publications | schoolHomepage | sha1 | surname | theme | thumbnail | tipjar | title | topic | topic_interest | weblog | workInfoHomepage | workplaceHomepage | yahooChatID | Note: Upper CamelCase for classes and lower camelCase for properties.Broad CategoriesFOAF Basics Personal Info Online Accounts / IMProjects and GroupsDocuments and ImagesAgent Person name nick title homepage mbox mbox_sha1sum img depiction (depicts) surname family_name givenname firstName weblog knows interest currentProject pastProject plan based_near workplace Homepage workInfo Homepage schoolHomepage topic_interest publications geekcode myersBriggs dnaChecksum OnlineAccount OnlineChat Account OnlineEcommerce Account OnlineGaming Account holdsAccount accountService Homepage accountName icqChatID msnChatID aimChatID jabberID yahooChatIDProject Organization Group member membershipClass fundedBy theme Document Image PersonalProfileDocument topic (page) primaryTopic tipjar sha1 made (maker) thumbnail logo ExampleBasic Example<rdf:RDF xmlns:foaf="http://xmlns.com/foaf/0.1/"> <foaf:Person rdf:about="#me"> <foaf:name>Dan Brickley</foaf:name> <foaf:mbox_sha1sum>241021fb0e6289f92815fc210f9e9137262c252e </foaf:mbox_sha1sum> <foaf:homepage rdf:resource="http://danbri.org/" /> <foaf:img rdf:resource="/images/me.jpg" /> </foaf:Person></rdf:RDF>This brief example introduces the basics of FOAF.It basically says:there is a foaf:Person (namely a default document resource #me) witha foaf:name property of 'Dan Brickley' anda foaf:mbox_sha1sum property of241021fb0e6289f92815fc210f9e9137262c252e andhas a foaf:homepage relationship to a URI http://danbri.org/ andhas a foaf:img relationship to a relative URI of /images/me.jpgFOAF Example The following FOAF profile (written in XML format) states that:Jimmy Wales is the name of the person described,his e-mail address, homepage and depiction are resources, which means that each of them can be described using RDF as well,he has an interest with Wikipedia andhe knows a person named Angela Beesley.FOAF Example<rdf:RDF xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"> <foaf:Person rdf:about="#JW"> <foaf:name>Jimmy Wales</foaf:name> <foaf:mbox rdf:resource="mailto:[email protected]" /> <foaf:homepage rdf:resource="http://www.jimmywales.com/" /> <foaf:nick>Jimbo</foaf:nick> <foaf:depiction rdf:resource="http://www.jimmywales.com/aus_img_small.jpg" /> <foaf:interest rdf:resource="http://www.wikimedia.org" rdfs:label="Wikipedia" /> <foaf:knows> <foaf:Person> <foaf:name>Angela Beesley</foaf:name> </foaf:Person> </foaf:knows>