Bogdan Marinoiu

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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)
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)
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 P2PML subscription is compiled into a distributed algebraic plan which is described using algebra over XML streams. The operators of this algebra are first(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 artifacts, 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 interactions(More)
In this paper, we develop algorithmic datalogbased foundations for the incremental processing of tree-pattern queries over active documents, i.e. document with incoming streams of data. We dene query satis ability 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)
Towards a data-centric workflow approach, we introduce an artifact model to capture data and workflow management activities in distributed settings. The model is built on Active XML, i.e., XML trees including Web service calls. We argue that the model captures the essential features of business artifacts as described informally in [1] or discussed in [2].(More)
Internet has led to a fundamental increase of information that is available to its users over the latest years. The users want to express their needs by simple means, such as queries and they want their queries to be evaluated without caring where the data are placed or how the queries are optimized. The work presented in this thesis contributes to the goal(More)
Internet has led to a fundamental increase of information that is available to its users over the latest years. The users want to express their needs by simple means, such as queries and they want their queries to be evaluated without caring where the data are placed or how the queries are optimized. The work presented in this thesis contributes to the goal(More)