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Object Model (object + model)

Distribution by Scientific Domains

Information Science and Computing	50%
Engineering	33%

Selected Abstracts

Tunneling enhanced by web page content block partition for focused crawling

CONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 1 2008
Tao Peng
Abstract The complexity of web information environments and multiple-topic web pages are negative factors significantly affecting the performance of focused crawling. A highly relevant region in a web page may be obscured because of low overall relevance of that page. Segmenting the web pages into smaller units will significantly improve the performance. Conquering and traversing irrelevant page to reach a relevant one (tunneling) can improve the effectiveness of focused crawling by expanding its reach. This paper presents a heuristic-based method to enhance focused crawling performance. The method uses a Document Object Model (DOM)-based page partition algorithm to segment a web page into content blocks with a hierarchical structure and investigates how to take advantage of block-level evidence to enhance focused crawling by tunneling. Page segmentation can transform an uninteresting multi-topic web page into several single topic context blocks and some of which may be interesting. Accordingly, focused crawler can pursue the interesting content blocks to retrieve the relevant pages. Experimental results indicate that this approach outperforms Breadth-First, Best-First and Link-context algorithm both in harvest rate, target recall and target length. Copyright © 2007 John Wiley & Sons, Ltd. [source]

ARCGIS-SWAT: A GEODATA MODEL AND GIS INTERFACE FOR SWAT,

JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, Issue 2 2006
Francisco Olivera
ABSTRACT: This paper presents ArcGIS-SWAT, a geodata model and geographic information system (GIS) interface for the Soil and Water Assessment Tool (SWAT). The ArcGIS-SWAT data model is a system of geodatabases that store SWAT geographic, numeric, and text input data and results in an organized fashion. Thus, it is proposed that a single and comprehensive geodatabase be used as the repository of a SWAT simulation. The ArcGIS-SWAT interface uses programming objects that conform to the Component Object Model (COM) design standard, which facilitate the use of functionality of other Windows-based applications within ArcGIS-SWAT. In particular, the use of MS Excel and MATLAB functionality for data analysis and visualization of results is demonstrated. Likewise, it is proposed to conduct hydrologic model integration through the sharing of information with a not-model-specific hub data model where information common to different models can be stored and from which it can be retrieved. As an example, it is demonstrated how the Hydrologic Modeling System (HMS) - a computer application for flood analysis - can use information originally developed by ArcGIS-SWAT for SWAT. The application of ArcGIS-SWAT to the Seco Creek watershed in Texas is presented. [source]

Five years of progress in the Standardization of Proteomics Data 4th Annual Spring Workshop of the HUPO-Proteomics Standards Initiative April 23,25, 2007 Ecole Nationale Supérieure (ENS), Lyon, France

PROTEINS: STRUCTURE, FUNCTION AND BIOINFORMATICS, Issue 19 2007
Sandra Orchard
Abstract Over the last five years, the Human Proteome Organisation Proteomics Standards Initiative (HUPO PSI) has produced and released community-accepted XML interchange formats in the fields of mass spectrometry, molecular interactions and gel electrophoresis, have led the field in the discussion of the minimum information with which such data should be annotated and are now in the process of publishing much of this information. At this 4th Spring workshop, the emphasis was on consolidating this effort, refining and improving the existing models and in pushing these forward to align with more broadly encompassing efforts such as FuGE (Jones, A.R., Pizarro, A., Spellman, P., Miller, M., FuGE Working Group FuGE: Functional Genomics Experiment Object Model. OMICS 2006, 10, 179-184) and the Ontology for Biomedical Investigation (OBI). The effort to merge the existing mass spectrometry XML interchange formats, mzData and mzXML, into one single standard mzML yielded significant progress. Also the preliminary design of AnalysisXML was extended to include several new use cases and better support for quantification information. Finally the Molecular Interaction group discussed the development of a molecular interaction scoring system with accompanying gold standard data test sets. [source]

Tensor-based matrices in geometrically non-linear FEM

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, Issue 15 2005
V. V. Chekhov
Abstract In the framework of the object-oriented paradigm, advantages of using the index-free tensor notation in combination with the concept of generalized tensor-based matrix are considered as being the most corresponding to the paradigm. The advantages reveal itself in the disappearance of a semantic gap between various stages of creation of FEM applications (theoretical inferences, use of the numerical methods, object-oriented software implementation) and, as a result, use of the unified object model in all the stages, as well as simplification of theoretical transformations. Based on the considered approach, a new FEM equation for large strain analysis is developed and its solution technique is outlined. Copyright © 2005 John Wiley & Sons, Ltd. [source]

Fuzzy extensions for relationships in a generalized object model

INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS, Issue 7 2001
Valerie V. Cross
Numerous approaches for introducing and managing uncertainty in object-oriented models have been proposed. This paper examines various semantics of uncertainty and the interaction with three kinds of relationships inherent to object models: for instance-of, a-kind-of, and a category. A generalized object model incorporating the perspective of semantic data modeling, artificial intelligence, and database systems is the basis for the recommendations for fuzzy extensions to these three kinds of relationships. © 2001 John Wiley & Sons, Inc. [source]