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Applying Ontology and Reasoning to theSemantic Web for RecommendationMay 03, 2010Supervisor:Prof. Marco BrambillaThesis of: Junayeed, Mohammad AbdullahMatr: 722892

Agenda• Introduction to Recommendation• Overview of Approach• Recommendation for Social Network Application• Implementations• Supported Features• Conclusion and Future works

Introduction to Recommendation•Systems for recommending items (e.g. books,movies, CD’s, web pages, newsgroupmessages) to users based on examples of theirpreferences and activities.•Objectives:◦To propose objects fitting the user needs/wishes◦To sell services (site (it visits) iit) or goods•Currently many search engine, on‐line stores,social ilnetwork services are providingrecommendation.

Overview of the Approach• The approach mainly addressing 3 objectives• Definition of the formal representation of Web datasemantics.• Specification of a set of components for managing Wb Webdata semantics and producing knowledge.• Specification of a set of patterns.• The components and patterns are used for contentconsumption and recommendation.• These patterns are not general design pattern. Theseare for implementing recommendation system byexploiting knowledge and formal representation ofdata semantics.

Development Phase of Knowledge‐Intensive Recommendation Application

Data SchemaInvitationUserRecommendationGroupInvitationFriendInvitationTopicRecommendationFi Friends GroupMember GroupTopicInterestInterestedTopicNotificationAtil ArticleMessageMovieNovelThriller Romantic ThrillerNovel RomanticNovel

Data Schema to Ontology• This Data Schema is not implemented as a set ofJAVA Classes or as Relational databases.• The schema is represented in XMI format and storedin an ontology repository.◦Since we start from a conceptual model which isin UML, we assume that we can have the UMLconceptual model in the XMI format.• Ontology gives us the opportunity to exploitreasoning capabilities.• This allows better recommendation over the data.

Recommendation Patterns1.1. Shows how the KB iscreated after we enterthe XMI format asinput.2. Shows how to extractall the instances fromthe KB.3. Shows a pattern forrecommendation.2.3. 4. Shows how a topic ofinterest is added and4.how to recommend itto user

Use Case for SN ApplicationUse Case diagram of the conceptual design for social network application

User ScenariosCreate Group John’s Profile Post Information New Article Create Topic New Group RecommendationAdd InterestID: 40GroupsActor User Group Member SystemEmail: john@test.com> Michael JacksonAddress: Via Mario Borsa, 25Object User City: Milano GroupMemberUserGroupGroupCreate NewTopicGroup New GroupCountry: Italyis createdMichael GroupMember ArticleGroup Name RecommendationMichael JacksonMichael Jackson JacksonActionCreate: UserPost New Article: GroupCreate Date Recommended 22/07/2009Create dTopic:Create Date: Date: 21/07/2009 21/07/2009 > Articles > Options OptionsMembers creates a new member will post a IDnewThe system 222Members>> >> Great Song Song Post Post New New Article Article willJohn John group and the >> May article rest in peace the group. Creator And recommend John a topic (anuser becomes all the group membersNew ArticleEnter event Article Information an article) to aCreate Groupthe group will be notified about is posted the Article user Name based May on rest interest peace ofmember of the new article. Subject the user whichMJ diedis similargroup.To Groupto the activities (event,Michael Jacksonarticle etc) of a group.Post

Recommendation (1)Roni’s Profile InformationID: 12Email: roni@test.comAddress: Via Mario Borsa, 25City: MilanoCountry: ItalyJohn’s Profile InformationID: 40Email: m009h@test.comAddress: Via Mario Borsa, 27City: MilanoCountry: ItalyRoni’s Interest> Movies>> La vita è bella>> Nuovo cinema Paradiso> NovelAdd Interest>> For whom the Bell TollsGroupsInterest God Father> Michael Jackson GroupTopic MoviesAddJohn’s Interest> Movies>> The Lord of the Ring>> God Father> Novel>> For whom the Bell TollsGroups> Michael Jackson GroupAdd InterestRecommendation from Group> Movies>> God FatherA newinterest isadded hereAdd Interest

Recommendation (2)Interest> Movie(s)>> Thriller Recommendation by the System>>> The Godfather Add as Interest> Movies by Genre>>> Scarface Add as Interest>>> The Departed Add as Interest>> Melena Add as Interest>>> Melena Add as Interest>> Romantic>>> Gone with the Wind Add as Interest> Novel(s)>> Thriller>>> 1984 Add as Interest>>> Animal Farm Add as Interest>>> Ulysses Add as Interest>>> To Kill A Mockingbird Add as Interest>> Romantic>>> Rebecca Add as InterestRecommendation by the SystemRecommendedon the basis ofuser’s activities> Novel by Type>> The Old Man and the Sea Add as InterestRecommendedon the basis ofuser’s activities

Recommendation (3)Roni’s Profile InformationID: 40Email: roni@test.comAddress: Via Mario Borsa, 25City: MilanoCountry: ItalyRoni’s FriendsJohnAlesandroRoni’s Interest> Movies>> La vita è bellaGroups> Michael Jackson GroupAdd InterestRecommendation by System> Article>> Amazing MovieBest Movies GroupCreate Date: 20/07/2009MembersJohn, Massimo, Marco> Articles>> Top 10 Movies>> Amazing MovieOptionsPost New Article

ImplementationAutomatically Shows details generated user information Home Page with all instances fromthe KB. The XMI file of the Conceptual Design

Supported Features•Our work supports◦Consistency Checking◦Automatic Classification◦Knowledge Schema Extraction◦Knowledge Update.

Future Works and Conclusion• I have developed methodologies forrecommendation in ontology based semantic webenvironment.• The framework I used, bridges the gap betweensemi‐formal modeling languages (UML) andsemantic formal representation languages.• Future works will include different complexrecommendation features.