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Databases in Networked Information Systems

Volume 7108 of the series Lecture Notes in Computer Science pp 41-48

Hiding Data and Structure in Workflow Provenance

  • Susan DavidsonAffiliated withDepartment of Computer and Information Science, University of Pennsylvania
  • , Zhuowei BaoAffiliated withDepartment of Computer and Information Science, University of Pennsylvania
  • , Sudeepa RoyAffiliated withDepartment of Computer and Information Science, University of Pennsylvania

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Abstract

In this paper we discuss the use of views to address the problem of providing useful answers to provenance queries while ensuring that privacy concerns are met. In particular, we propose a hierarchical workflow model, based on context-free graph grammars, in which fine-grained dependencies between the inputs and outputs of a module are explicitly specified. Using this model, we examine how privacy concerns surrounding data, module function, and workflow structure can be addressed.