Bogdan Marinoiu

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Many Web applications are based on dynamic interactions between Web components exchanging flows of information. Such a situation arises for instance in mashup systems or when monitoring distributed autonomous systems. Our work is in this challenging context that has generated recently a lot of attention; see Web 2.0. We introduce the axlog formal model for(More)
ManyWeb applications are based on dynamic interactions between Web components exchanging flows of information. Such a situation arises for instance in mashup systems [22] or when monitoring distributed autonomous systems [6]. This is a challenging problem that has generated recently a lot of attention; see Web 2.0 [38]. For capturing interactions between(More)
The workflow models have been essentially operation-centric for many years, ignoring almost completely the data aspects. Recently, a new paradigm of data-centric workflows, called business arti-facts, has been introduced by Nigam and Caswell. We follow this approach and propose a model where artifacts are XML documents that evolve in time due to(More)
In this paper, we develop algorithmic datalog-based foundations for the incremental processing of tree-pattern queries over active documents, i.e. document with incoming streams of data. We de-ne query satisability for such documents based on a logic with 3-values: true, false forever, and false for now. Also, given an active document and a query, part of(More)
In this paper, we are concerned with the distributed monitoring of P2P systems. We introduce the P2P Monitor system and a new declarative language, namely P2PML, for specifying monitoring tasks. A subscription is compiled into a distributed algebraic plan which is described using an algebra over XML streams. We introduce a lter for streams of XML documents(More)
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