Monday, January 23, 2012

Metadata Provenance

There's a lot of talk about doing away with bibliographic records and replacing them with collections of linked data. In this scenario keeping track of the links is of vital importance. The recent paper How To Track Your Data: The Case for Cloud Computing Provenance by Olive Qing Zhang, Markus Kirchberg, Ryan K. L. Ko, and Bu Sung Lee addresses this topic.
Provenance, a meta-data describing the derivation history of data, is crucial for the uptake of cloud computing to enhance reliability, credibility, accountability, transparency, and confidentiality of digital objects in a cloud. In this paper, we survey current mechanisms that support provenance for cloud computing, we classify provenance according to its granularities encapsulating the various sets of provenance data for different use cases, and we summarize the challenges and requirements for collecting provenance in a cloud, based on which we show the gap between current approaches to requirements. Additionally, we propose our approach, DataPROVE, that aims to effectively and efficiently satisfy those challenges and requirements in cloud provenance, and to provide a provenance supplemented cloud for better integrity and safety of customers' data.

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