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Delivering Digital Services

This presentation by Deborah Cowell discusses the challenges businesses face in managing and accessing data, and how semantic technology and ontologies can help overcome these challenges. The presentation also explains the components of ontologies and their architecture.

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Delivering Digital Services

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  1. Delivering Digital Services Ontology/ Semantics Theme Presented By: Deborah Cowell, FAA, AIT Date: August 27, 2014

  2. Business Challenges • What data/information do we have? • Where is it? • How can I find it? • How can I get to it? • How can I merge it with other information that I need to answer business questions? And…have the agility to add more sources in a timely manner? • How can I retrieve only the information that I need that is “relevant” to me, versus everything? • How can I extract value from paper-based forms/documents?

  3. Technological Challenges • Integrating data and information from disparate sources (Variety); each using different schemas and models. • Coping with rapidly increasing volumes of data/content (Velocity & Volume). • Providing access to relevant, timely and reliable data (Veracity). • Delivering value to the information customers by providing agile methods, techniques and tools. • Providing the ability to ask questions extemporaneously. Requires us all to undergo a new way of thinking!

  4. Key Enabler: Semantic Technology • Semantic Technologies • Software systems built with algorithms that depend on machine-executable representations of real-world knowledge • Machine Understanding • Semantics provides machine interpretable context • Standards-based technologies enable knowledge at scale Source: Securboration, Inc.

  5. Ontology • Definitions • An ontology is a structured representation of the types of entities and relations existing in a given domain that is designed to support exchange and reuse of data and information. Source: Securboration, Inc.

  6. Ontology – Components • Classes • Collections of individuals • Ex: Airport, Runway, Infrastructure • Relations • Specification of how classes and individuals relate to one another • Ex: part of • Axioms • Categorical assertions • Ex: “Airports are infrastructure”, “No Airport is a runway”. • Individuals • Basic entities/instances which get classified • Ex: IAD, 01C/19C Infrastructure is a Ontology disjoint with Airport Runway type type part of 01C/19C IAD Data Source: Securboration, Inc.

  7. Ontology Architecture: A Tiered Approach Upper Level - A small, highly curated and stable ontology that describes very general concepts (e.g. Entity, Event) that are the same across all knowledge domains. Mid Level – A high level domain ontology that provides A bridge between an upper-level ontology and numerous low level domain ontology E.g.: Aviation Ontology Lower Level - A low level domain ontology that describes A very specific area of a domain E.g.: Phase of Flight Ontology is a lower level Aviation Ontology Ontology Levels Source: Securboration, Inc.

  8. Relationship to the Data Models ByMalcolm Chisholm, AUG 12, 2014 Information Management

  9. Our Speakers Today… • Josh Powers • Wen Zhu (Demo) • Eduard Gringinger

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