Improving Authoring-by-Aggregation and Using Aggregation Context for Query Expansion
Key: MRS07-1
Author: Marek Meyer, Christoph Rensing, Ralf Steinmetz
Date: September 2007
Kind: In proceedings
Publisher: Springer
Book title: Creating New Learning Experiences on a Global Scale, Second European Conference on Technology Enhanced Learning, EC-TEL 2007
Abstract: Authoring-by-Aggregation is an authoring paradigm for cre- ating new Learning Resources by composing several smaller ones. How- ever ¯nding suitable Learning Resources that can be reused in a partic- ular course is a time-consuming task. The user has to query a repository and review the resulting list of Learning Resources whether they are ap- plicable. In this paper we present a new method for narrowing the result set by taking the aggregation context into account. Context features are used as additional query attributes, leading to more precise query results. This paper also presents an improved Authoring-by-Aggregation process and a corresponding implementation, which facilitates the creation of new Learning Resources.

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