Formalizing Cross-Parameter Conditions for Geoprocessing Service Chain Validation

2011 ◽  
Vol 2 (1) ◽  
pp. 18-35
Author(s):  
Daniel Fitzner
Keyword(s):  
Web Services ◽  
Service Composition ◽  
Reference System ◽  
Input Parameter ◽  
Input Output ◽  
Web Based ◽  
Rule Based ◽  
Service Chain ◽  
Spatial Reference ◽  
Automated Handling

Geoprocessing operations offered via web services provide the means for building complex web-based geospatial applications. Often, certain postconditions such as the spatial reference system, bounding box, schema or quality that hold on the output dataset after the execution of a geoprocessing service are determined and derived from the properties of the inputs passed to the service. Further, geoprocesses often hold preconditions that relate to more than one input, such as the requirement that all inputs must have the same schema. Within current process descriptions for geoprocessing operations, such conditions which we call cross-parameter conditions, can not be explicitly specified. In this paper, the author gives an approach to formalize such cross input-output and cross input parameter conditions in a rule-based language. Further, the author proposes an algorithm for deriving pre- and postconditions for a service composition or workflow out of the pre- and postconditions of the services involved, allowing a more automated handling of workflows in general.

Formalizing Cross-Parameter Conditions for Geoprocessing Service Chain Validation

2013 ◽  
pp. 1619-1637
Author(s):  
Daniel Fitzner
Keyword(s):  
Web Services ◽  
Service Composition ◽  
Reference System ◽  
Input Parameter ◽  
Input Output ◽  
Web Based ◽  
Rule Based ◽  
Service Chain ◽  
Current Process ◽  
Automated Handling

Geoprocessing operations offered via web services provide the means for building complex web-based geospatial applications. Often, certain postconditions such as the spatial reference system, bounding box, schema or quality that hold on the output dataset after the execution of a geoprocessing service are determined and derived from the properties of the inputs passed to the service. Further, geoprocesses often hold preconditions that relate to more than one input, such as the requirement that all inputs must have the same schema. Within current process descriptions for geoprocessing operations, such conditions which we call cross-parameter conditions, can not be explicitly specified. In this paper, the author gives an approach to formalize such cross input-output and cross input parameter conditions in a rule-based language. Further, the author proposes an algorithm for deriving pre- and postconditions for a service composition or workflow out of the pre- and postconditions of the services involved, allowing a more automated handling of workflows in general.

Formalizing Cross-Parameter Conditions for Geoprocessing Service Chain Validation

2012 ◽  
pp. 282-300
Author(s):  
Daniel Fitzner
Keyword(s):  
Web Services ◽  
Service Composition ◽  
Reference System ◽  
Input Parameter ◽  
Input Output ◽  
Web Based ◽  
Rule Based ◽  
Service Chain ◽  
Current Process ◽  
Automated Handling

Geoprocessing operations offered via web services provide the means for building complex web-based geospatial applications. Often, certain postconditions such as the spatial reference system, bounding box, schema or quality that hold on the output dataset after the execution of a geoprocessing service are determined and derived from the properties of the inputs passed to the service. Further, geoprocesses often hold preconditions that relate to more than one input, such as the requirement that all inputs must have the same schema. Within current process descriptions for geoprocessing operations, such conditions which we call cross-parameter conditions, can not be explicitly specified. In this paper, the author gives an approach to formalize such cross input-output and cross input parameter conditions in a rule-based language. Further, the author proposes an algorithm for deriving pre- and postconditions for a service composition or workflow out of the pre- and postconditions of the services involved, allowing a more automated handling of workflows in general.

A Web Service Composition Algorithm Based on Graph Search and Semantic Web

2014 ◽  
Vol 687-691 ◽  
pp. 1637-1640
Author(s):  
Liang Liang Hao
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Service Composition ◽  
Semantic Information ◽  
Web Service Composition ◽  
Graph Search ◽  
Input Output

With the Development of web service technology, a single web service cannot fulfill different users’ diverse requirements. Adding semantic information to the input-output message of web services provides us a method to implement web service composition automatically. After researching on existing algorithms for web service composition, this article proposed a QoS-oriented web service composition algorithm based on graph search with semantic information.

An extensive Review of Web-Based Multi Granularity Service Composition

2022 ◽  
Vol 17 (4) ◽  
pp. 0-0
Keyword(s):  
Cloud Computing ◽  
Web Services ◽  
Service Composition ◽  
Research Paper ◽  
Research Trends ◽  
Resource Consumption ◽  
Extensive Review ◽  
Web Based ◽  
Heterogeneous Services ◽  
Selection Of

The paper reviews the efforts to compose SOAP, non-SOAP and non-web services. Traditionally efforts were made for composite SOAP services, however, these efforts did not include the RESTful and non-web services. A SOAP service uses structured exchange methodology for dealing with web services while a non-SOAP follows different approach. The research paper reviews the invoking and composing a combination of SOAP, non-SOAP, and non-web services into a composite process to execute complex tasks on various devices. It also shows the systematic integration of the SOAP, non-SOAP and non-web services describing the composition of heterogeneous services than the ones conventionally used from the perspective of resource consumption. The paper further compares and reviews different layout model for the discovery of services, selection of services and composition of services in Cloud computing. Recent research trends in service composition are identified and then research about microservices are evaluated and shown in the form of table and graphs.

A spatial reference and identification system for coastal ice-free land in East Antarctica

Polar Record ◽  
2021 ◽  
Vol 57 ◽  
Author(s):  
Colin Southwell ◽  
David Smith ◽  
Angela Bender ◽  
Louise Emmerson
Keyword(s):  
Reference System ◽  
Environmental Studies ◽  
East Antarctica ◽  
Identification System ◽  
Spatial Reference ◽  
Wide Range ◽  
Coastal Island ◽  
Related Database

Abstract We describe a spatial reference system that uniquely identifies 4884 coastal island and continental rock features across East Antarctica. The system comprises a series of maps and a related database, and can be a foundation tool for a wide range of environmental studies.

Services and Service Composition – An Introduction (Services und Service Komposition – Eine Einführung)

2008 ◽  
Vol 50 (2) ◽  
Author(s):  
Shahram Dustdar ◽  
Mike P. Papazoglou
Keyword(s):  
Web Services ◽  
Service Composition ◽  
Web Applications ◽  
Future Research ◽  
Basic Principles ◽  
Service Oriented Computing ◽  
Research Challenges ◽  
Internet Computing ◽  
The Future ◽  
Service Oriented

SummaryIn this overview paper, we discuss the basic principles underlying service-oriented computing in general, and (Web) services in particular. We discuss the important differences between (Web) services and Web applications and other models in Internet computing. Finally, we discuss where we see the future research challenges in the area of service composition.

Service Composition and Execution Plan Generation of Composite Semantic WEB Services Using Abductive Event Calculus

2015 ◽  
Vol 32 (4) ◽  
pp. 711-737 ◽  
Author(s):  
D. Paulraj ◽  
S. Swamynathan ◽  
Daniel Chandran ◽  
K. Balasubadra ◽  
M. Vigilson Prem
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Service Composition ◽  
Semantic Web Services ◽  
Event Calculus ◽  
Execution Plan ◽  
Plan Generation

scholarly journals Redefining of “EPSG” and “PROJ” for current State Coordinate Reference System of the Republic of North Macedonia

2021 ◽  
Vol 4 ◽  
pp. 1-8
Author(s):  
Bashkim Idrizi
Keyword(s):  
Real Estate ◽  
Spatial Data ◽  
Reference System ◽  
Coordinate Transformations ◽  
Reference Systems ◽  
Spatial Reference ◽  
Current State ◽  
Entire Country ◽  
The Republic ◽  
The Military

Abstract. The state Coordinate Reference System (CRS) of the Republic of North Macedonia (RNM) has been established a century ago, by the Military Geographic Institute of the Yugoslavia Kingdom. It is in official usage entire period up to day. In international public EPSG registry of geodetic datums, spatial reference systems, Earth ellipsoids, coordinate transformations and related units of measurement, CRS for RNM is recognizable within 3 EPSG codes 6204, 6316 and 8679.First code EPSG 6204 represents current state CRS for the entire country area, based on current law, however unfortunately this CRS is official by the law but it is not used for developing the official spatial data published in geoportals of Agency for Real Estate Cadastre (AREC) and NSDI geoportal of RNM. The second code EPSG 6316 is defined to be used for 6 countries of former Yugoslavia that covers area between 19.5°E up to 22.5°E longitude, which does not correspond with the practical and official usage of CRS for working with spatial data in RNM and CRS law definition in RNM. Third code EPSG 8679 has never been used in RNM, which covers eastern part of RNM and Serbia beginning from 22.5°E.Beside of problems with EPSG codes, default transformation parameters of EPSG 6316 have low accuracy and can not be used for data overlapping with open layers. Therefore, redefined new EPSG codes for state CRS of RNM are proposed in this paper.

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