This paper proposes a constraint programming approach for workflow applications in which a slip is regarded as a tuple of the RDB model. A workflow is considered to be a series of database updating and constraint maintenance processes in this case. The proposed method utilizes pre-conditions and postconditions in a constraint programming style for an agent that interprets and executes these con...

In this article, we present some results on the application of fuzzy methods to the segmentation of multivariate medical images. We report the results obtained by using the Fuzzy C-mean (FCM) algorithm by J. Bezdek and the method by K. Rose, E. Gurewitz and G. Fox (RGF) based on the Maximum Entropy Principle (MEP) that avoids any a priori assumption on the number of classes. In particular we st...

In this paper we present a new family of Intensional RDBs (IRDBs) which extends the traditional RDBs with the Big Data and flexible and ’Open schema’ features, able to preserve the user-defined relational database schemas and all preexisting user’s applications containing the SQL statements for a deployment of such a relational data. The standard RDB data is parsed into an internal vector key/v...

The Linked Data standard — which is based on the publication of data in the Web as RDF triples — is gaining increasing attention as a way to promote open data interoperability. The publication of data originally stored in relational databases as RDF is known as the RDB-to-RDF approach. The first step in this process requires the mapping of database concepts to RDF vocabularies, used as the base...

this paper proposes a solution for migrating an RDB into Web semantic. The solution takes an existing RDB as input, and extracts its metadata representation (MTRDB). Based on the MTRDB, a Canonical Data Model (CDM) is generated. Finally, the structure of the classification scheme in the CDM model is converted into OWL ontology and the recordsets of database are stored in owl document. A prototy...

Data mining can be understood as a process of extraction of knowledge hidden in very large data sets. Often data mining techniques (e.g. discretization or decision tree) are based on searching for an optimal part i t ion of data wi th respect to some optimization criterion. In this paper, we investigate the problem of optimal binary part i t ion of continuous attr ibute domain for large data se...

Both relational database theory (RDB) and rough set theory (RS) are formal theories derived from the study of tables. However, they were based on different philosophies and went on to different directions. RDB assumes semantics of data is known and focuses on organizing data through its semantics. RS, in this table format, assumes data semantics is defined by the given data and focuses on disco...

The UNESCO convention on Intangible Cultural Heritage (ICH) requires countries to document their oral traditions, performing arts, traditional festivities, and so forth. Several institutions gather ICH, traditionally by hand, and record and disseminate it through conventional information systems (static knowledge in relational databases, RDB). Two difficulties are that (1) review/refinement of ...

In real photography, focus control plays an important role in emphasizing the subject in the photo. In computer graphics, however, focus simulation, or depth of field simulation, is used only in a limited way because it is too expensive if super-sampling is used. This paper proposes an efficient depth of field simulation method that can be realized as postfiltering . To deal with the partial oc...

R. W. El-Sabaawi ([email protected]), C. Rakowski and A. S. Flecker, Dept of Ecology and Evolutionary Biology, Cornell Univ., Ithaca, NY 14853, USA. Present address for RWES: Dept of Biology, Univ. of Victoria, PO Box 1700, Station CSC, Victoria, BC V8W 2Y2, Canada. Present addressfor CR: School of Natural Resources and Environment, Univ.y of Michigan, Ann Arbor, MI 48109, USA. – R. D. Bassar and D....