Michael Kraxner

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This article discusses opportunities for leveraging scale in cases of recurring scenarios of comparable decisions with multiple objectives in well-defined domains. Based on a software component ranking and selection method that uses utility analysis to separate objective information gathering and subjective assessment, we discuss challenges of decision(More)
Digital libraries are increasingly relying on distributed services to support increasingly complex tasks such as retrieval or preservation.While there is a growing body of services for migrating digital objects into safer formats to ensure their long-term accessability, the quality of these services is often unknown. Moreover, emulation as the major(More)
The preservation community is busily building systems for repositories, identification and characterisation, analysis and monitoring, planning and other key activities, and increasingly, these systems are linked to collaborate more effectively. While some standard metadata schemes exist that facilitate interoperability, the controlled vocabularies that are(More)
The lack of QoS attributes and their values is still one of the fundamental drawbacks of web service technology. Most approaches for modelling and monitoring QoS and web service performance focus either on client-side measurement and feedback of QoS attributes, or on ranking and discovery, developing extensions of the standard web service discovery models.(More)
Digital preservation has turned into an active field of research. The most prominent approaches today are migration and emulation; especially considering migration, a range of working tools is available, each with specific strengths and weaknesses. The decision process on which actions to take to preserve a given set of digital objects for future access,(More)
The creation of a concrete plan for preserving a collection of digital objects of a specific institution necessitates the evaluation of available solutions against clearly defined and measurable criteria. This process is called preservation planning and aids in the decision making process to find the most suitable preservation strategy considering the(More)
Creating a concrete plan for preserving an institution's collection of digital objects requires the evaluation of available solutions against clearly defined and measurable criteria. Preservation planning aids in this decision making process to find the best preservation strategy considering the institution's requirements, the planning context and possible(More)
Continuous activities such as preservation monitoring, planning and operations, including the provisioning of access mechanisms or the creation of derivatives through migration, are needed to enable continuous access to content across evolving technological contexts without affecting the authenticity of digital objects. This article describes the SCAPE(More)