The rigid schemas of classical relational databases help users in specifying queries and inform the storage organization of data. However, the advantages of schemas come at a high upfront cost through schema and ETL process design. In this work, we propose a new paradigm where the database system takes a more active role in schema development and data integration. We refer to this approach as a...

In this paper we rigorously formulate the Schema Theorem for Genetic Programming (GP). This involves defining a schema, schema order, and defining length and accounting for the variable length and the non-homologous nature of GP's representation. The GP Schema Theorem and the related notion of a GP Building Block are used to constlUct a testable hypothetical account of how GP' searches by hiera...

In this paper we study the logical and computational properties of schema evolution and versioning support in object-oriented databases. To this end, we present the formalisation of a general model for an object base with evolving schemata and define the semantics of the provided schema change operations. We will then sketch how the encoding of such a framework in a suitable Description Logic w...

In this paper, we discussed the problems brought by the schema heterogeneity in DLs, especially those problems found in the application of the OAI-PMH protocol. This paper studies the problem from two perspectives, namely the schema and the architecture respectively. A preliminary architecture is provided that integrates the ontology, agent, P2P together to support the schema mapping. And the s...

In contrast to three schema levels in centralized objectbases, a reference architecture for federated objectbase systems proposes five levels of schemata. This paper investigates the fundamental mechanisms to be provided by an object model to realize the processors transforming between these levels, namely schema ezlension, s&emu filtering, and schema composition. It is shown, how composition a...

Database applications undergo frequent schema changes. To change the schema, the application has to be shut down and migrated to the new version, or run in a mixed mode that supports old and new clients, e.g., via schema versioning. Shutdowns are problematic for applications that cannot tolerate downtime such as embedded, real-time or missioncritical systems; in the Cloud, shutdowns can lead to...

Obese women have negative physical self-concept and attitude about self .Schema therapy as a new approach in psychological intervention is effective in reduction of negative beliefs, self-concept and worry. The purpose of this study was to investigate the effect of group schema therapy on physical self-concept and worry about weight and diet in women with obesity. This study was a quasi-experim...

With the emerging of new experimental techniques, there has been a remarkable increase in the amount of available biomedical data. Processing and mining large volumes of data in chemistry has now presented a challenging issue. In order to deal with the challenge, we developed SCHEMA (Spark-based CHEMicAl entity recognizer), a robust and efficient chemical entity recognition system on top of Apa...