Titlebook: Semantics in Data and Knowledge Bases; Third International Klaus-Dieter Schewe,Bernhard Thalheim Conference proceedings 2008 Springer-Verl

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GIBE

Data Integration through , Ontologiese data are, how they are stored, and how they can be accessed. One of the outcomes of the research work carried out on data integration in the last years is a clear conceptual architecture, comprising a global schema, the source schema, and the mapping between the source and the global schema. In th

Banister

The Relational Polynomial-Time Hierarchy and Second-Order Logicer logic SO. introduced by A. Dawar. In relational complexity, the basis for measuring the complexity of computing queries with relational machines, is the number of different FO.-types realized by the input database. In SO., the second-order quantifiers range over relations that are closed under eq

avulsion

Qualitative Knowledge Discoveryry approaches associate conditional probabilities to discovered rules in order to specify their strength. In this paper, we propose a qualitative approach to knowledge discovery. We do so by abstracting from actual probabilities to qualitative information and in particular, by developing a method fo

justify

On the Notion of an XML Keys for XML. In particular keys have recently gained much attention. Keys help to discover and capture relevant semantics of XML data, and are crucial for developing better methods and tools for storing, querying and manipulating XML data. Various notions of keys have been proposed and investigated ov

nostrum

Celiac-Plexus

Definition and Formalization of Entity Resolution Functions for Everyday Information Integrations often gather fine-grained data and organize it in an entity-centric way, developing tables of information regarding real-world objects, ideas, or people. Often, they do this by copying and pasting bits of data from e-mails, databases, or text files into a spreadsheet. During this process, users ev

Aids209

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Semantic Bijectivity and the Uniqueness of Constant-Complement Updates in the Relational Contextis independent of the choice of complement is presented. In contrast to previous results, the uniqueness is not limited to order-based updates (those constructed from insertions and deletions), nor is it limited to those well-behaved complements which define closed update strategies. Rather, the app

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