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Enabling Access to Sound Archives through Integration, Enrichment and Retrieval WP2 – Media Semantics and Ontologies
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12 Month Review Meeting Project #033902 Introduction to Workpackage Objectives O1-Modelling semantics for media data O2-Representing semantics for media data O3-Ontology management environment Proof-of-Concept for Ontology-based searching
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12 Month Review Meeting Project #033902 O1 – Identifying semantic Requirements Scope and usage Media description Representation of Content Structure (e.g., segmentations, sequence in time) Representation of Content Description (e.g., low-level features – tempo, chord) Knowledge representation formalism Reasoning support Easy annotation Openness Reference: aceMedia multimedia ontology framework
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12 Month Review Meeting Project #033902 O1 - Music Ontology Overview Merging existing related ontologies Developed by QMUL Cover the major requirements Widely-adopted Four core MO components FRBR FOAF Event Timeline
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12 Month Review Meeting Project #033902 O1 - Ontology Modularization Modularization is the partition of the knowledge infrastructure into accurate ontological modules in order to model different aspects of multimedia content. Allow easy to use and easy to reuse (without changes applied to one affecting the other) Interoperation and Integration (ontology mediation) Support for different level of applications Easy to link multimedia ontologies to domain-specific ontologies
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12 Month Review Meeting Project #033902 O1 - Modularized EASAIER Ontology Top module basic concepts and relations concepts and relations in core modules are specializations of top module ones Core modules Audio module concept shared and further specialized by core audio modules (Speech, Music) Music module integration of the Music Ontology Speech module Video module Domain ontologies store special knowledge needed for describing the content of multimedia files e.g. Politicians, Sports etc.
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12 Month Review Meeting Project #033902 O1 - Content of the top level ontology module Central concepts File, Segment—the primary bearers of multimedia metadata Low level feature—automatically extractable characteristics of segments Algorithm—feature extractor procedures Event—represented, or recording events
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12 Month Review Meeting Project #033902 O1 - Content of the speech ontology module Speech related features and their extractor algorithms Special concepts and instances for relational features
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12 Month Review Meeting Project #033902 O2 – Semantic Representation Basic Requirement (wish lists from W3C OWL working group) Ontology sharing (ability to import other ontologies) Ontology versioning (support changes or evolution) Interoperability (facilating easy mapping of various ontologies) Ontology reasoning (providing various reasoning support, simple reasoning is desirable for the reality) Expressiveness and scalability (a good balance of both, layered structure is important) Easy to use in syntax and semantics (tools, clear documentation) Compatibility with other standards Internationalization
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12 Month Review Meeting Project #033902 O2 - WSML Jos de Bruijn, Stijn Heymans: Translating Ontologies from Predicate-based to Frame-based Languages. In Proceedings of Second International Conference on Rules and Rule Markup Languages for the Semantic Web (RuleML 2006) Web Service Modeling Language Language for describing ontologies and Web services European initiative lead by DERI Family of formal Web languages layered on top of XML and RDF: WSML-Core WSML-DL WSML-Flight WSML-Rule WSML-Full
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12 Month Review Meeting Project #033902 O3 – Ontology Management Environment WSMT Mainly developed by DERI It is collaborative EU efforts Graphical ontology editing, querying, mapping For more details, see WSMT demo
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12 Month Review Meeting Project #033902 Deliverables and Milestones D2.1 Report on metadata management infrastructure and ontology language for media objects Due Month 24 (May 2008) In good progress. Works are continuously documented in the internal notes Milestones M1-Month6: Semantic requirements established M2-Month12: Ontology languages selected (WSML and OWL). Further improved integration of WSML DL with OWL DL Progress M1 and M2 have been successfully achieved. Heading for M3 (Month18): Demo the ontology management infrastructure (WSMT demo) Demo the functionalities of the infrastructure (Proof-of-the-Concept for ontology-based searching)
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12 Month Review Meeting Project #033902 Contributions and Connections with Other Workpackages WP2: Media Semantics and Ontologies WP4: Sound Object Representation WP3: Retrieval Systems WP5: Enriched Access Tools WP6:Intelligent Interfaces WP4: metadata requirements are considered during the ontology design WP5: ontology is used to access/query related data WP3: ontology is used for retrieval system. WP6: ontology is used for dynamic interface generation
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12 Month Review Meeting Project #033902 Upcoming Work Plan Months 12-24 Speech ontology Further development and enriching Integration with the music ontology Further mappings of metadata schema to the EASAIER ontology Further constructing ontology managment infrastructure (Milestone 3 – Month18) Integration with Instance Store Further extension and improvement of WSML DL to OWL DL Testing WSMT
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Demo1 Ontology Editing and Population
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12 Month Review Meeting Project #033902 Archive publication: Hotbed example Hotbed Database Music Ontology Querying Publishing Extending Instruments Taxonomy Hotbed RDF the Semantic Archivist Query Interface Sound Access tools Features Extraction, Visualization,...
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Demo 2 - Proof-of-the-concept Ontology based searching
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12 Month Review Meeting Project #033902 Artist Search Aggregation of music artist information from multiple web sources Ontology based search: MusicBrainz data mapped to the MusicOntology MusicBrainz Web Service: allows to retrieve artist URI by literal based search Retrieve corresponding RDF document(s) process with SPARQL queries (e.g. resolve relationships) Web2.0 Mashups: Retrieve data (videos, images) from external sources utilize RSS Feeds, APIs etc. from Youtube, LyricWiki, Google more accurate results using references from MusicBrainz RDF data
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12 Month Review Meeting Project #033902 Artist Search “Beatles” WS Interface process data...
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12 Month Review Meeting Project #033902 Artist Search
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12 Month Review Meeting Project #033902 Instrument Reasoning Reasoning over HOTBED (Scottish Music Archive) instrument scheme HOTBED database lifted to Music Ontology using D2R mapping Extended with an Instrument taxonomy Subsumption reasoning: Retrieve instrument tree Search for persons that play an instrument Subclass relations: resolve persons playing more specific instruments Example: Wind-Instrument < WoodWind < Flute
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12 Month Review Meeting Project #033902 Rules Infer new knowledge with rules UseCase: The Velvet Underground discography Available information: Membership durations Album release dates „Founders“ of the band ? Members of the band during the release of the earliest album Albums and corresponding members
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