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Workflow systems have become increasingly popular for managing experiments where many bioinformatics tasks are chained together. Due to the large amount of data generated by these experiments and the need for reproducible results, provenance has become of paramount importance. Workflow systems are therefore starting to provide support for querying(More)
One of the most elusive goals of structured data management has been sharing among large, heterogeneous populations: while data integration [4, 10] and exchange [3] are gradually being adopted by corporations or small confederations, little progress has been made in integrating broader communities. Yet the need for large-scale sharing of heterogeneous data(More)
SUMMARY ZOOM*UserViews presents a model of provenance for scientific workflows that is simple, generic, and yet sufficiently expressive to answer questions of data and step provenance that have been encountered in a large variety of scientific case studies. In addition, ZOOM builds on the concept of composite step-classes – or sub-workflows – which is(More)
In this demonstration, we present the ZOOM*UserView system , and focus on the module which generates a " user view " based on what tasks the user perceives to be relevant in the workflow specification. We will show how user views can be used to reduce the amount of information returned by prove-nance queries, while focusing on information the user finds(More)
UNLABELLED Biologists are frequently faced with the problem of integrating information from multiple heterogeneous sources with their own experimental data. Given the large number of public sources, it is difficult to choose which sources to integrate without assistance. When doing this manually, biologists differ in their preferences concerning the sources(More)
A technique called <i>user views</i> has recently been proposed to focus user attention on relevant information in response to provenance queries over workflow executions [1, 2]: Given user input on what modules in the workflow specification are <i>relevant</i> to the user, a user view is a concise representation that clusters together modules to create a(More)
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