Maurice Hendrix and Alexandra Cristea (Semi-)automatic authoring of AH

Invited Seminar, Madrid, Spain April 2008 Outline Why automatic authoring System overview Semantic Desktop Adding resources

Invited Seminar, Madrid, Spain April 2008 Why automatic authoring Make authoring task easier Manual annotation is bottleneck By integrating authoring environment into semantic desktop

Invited Seminar, Madrid, Spain April 2008 System overview

Invited Seminar, Madrid, Spain April 2008 Concept maps and lessons are hierarchies: MOT hierarchy structure

Invited Seminar, Madrid, Spain April 2008 Semantic Desktop Desktop where everything is stored with extra metadata We uses RDF as storage format Example RDF (also has an XML representation) :

Invited Seminar, Madrid, Spain April 2008 Adding Resources MOT goal/domain maps are hierarchies with tree structure, siblings are concepts at the same level The Semantic Desktop can be searched for resources. They are ranked by 2 formulae

Invited Seminar, Madrid, Spain April 2008 Ranking Concept oriented Article Oriented where: rank(a,c) is the rank of article a with respect to the current domain concept c; k(c) is the set of keywords belonging to the current domain concept c; k(a) is the set of keywords belonging to the current article a; |S| = the cardinality of the set S, for a given set S.

Invited Seminar, Madrid, Spain April 2008 Selection of ranking method - snapshot

Invited Seminar, Madrid, Spain April 2008 Equal ranks

Invited Seminar, Madrid, Spain April 2008 Allow duplicates among siblings We call concepts in MOT at the same depth in the hierarchy Siblings The author has to make a choice. Adding to all siblings can mean students get the link multiple times Choosing one of the siblings can mean students don’t always get the link when relevant.

Invited Seminar, Madrid, Spain April 2008 Selection of duplicates/none snapshot

Invited Seminar, Madrid, Spain April 2008 Add meta-data as separate concepts The retrieved resources might have attributes themselves If resources have further attributes, these can be added as domain attributes in MOT The resource can also be made into a domain concept with its own separate domain attributes

Invited Seminar, Madrid, Spain April 2008 Add metadata as attributes

Invited Seminar, Madrid, Spain April 2008 Add metadata as Separate concepts

Invited Seminar, Madrid, Spain April 2008 Separate concepts/ attributes snapshot

Invited Seminar, Madrid, Spain April 2008 Compute resource keywords as set The number of times a keyword occurs might indicate the relevance of the keyword. The ranking formulae can be computed on sets of keywords or multisets.

Invited Seminar, Madrid, Spain April 2008 Set/ multiset snapshot

Invited Seminar, Madrid, Spain April 2008 Before MOT hierarchy snapshot

Invited Seminar, Madrid, Spain April 2008 After MOT hierarchy snapshot

Invited Seminar, Madrid, Spain April 2008 Questions?