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A Generic Web Service for Ad-hoc Statistical Spatio-Temporal Aggregation

机译:临时统计时空聚合的通用Web服务

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摘要

For the analysis of geospatial data, statistical spatio-temporal aggregation (SSTA) is a frequently used functionality. Possible applications include information extraction, data fusion, generalization and schema transformation. On the basis of spatial and temporal references, SSTA transfers thematic attribute values into a coarser spatio-temporal resolution using descriptive statistical operations. Reusable geoprocessing functions are increasingly offered in Spatial Data Infrastructures (SDIs) through standardized interfaces using mainstream network technologies. Due to the variety of use cases, a Web service for SSTA promises a high potential for reuse. However, offering functionalities for geoprocessing within an SDI raises some challenges. The aggregation process itself, as well as the encapsulation of the aggregation functionalities within an SDI, require thorough design considerations. This article addresses these challenges by developing a generic framework for SSTA services within an SDI. A prototype of the framework is realized using several open-source software components. Following a modular approach, the communication between those loosely-coupled components is enabled through open, standardized interfaces. The result of the proposed work is a framework that enables users to easily perform a statistical ad-hoc aggregation on distributed spatio-temporal data.
机译:对于地理空间数据分析,统计时空聚合(SSTA)是一种常用功能。可能的应用包括信息提取,数据融合,概括和模式转换。在空间和时间参考的基础上,SSTA使用描述性统计操作将主题属性值转换为较粗糙的时空分辨率。通过使用主流网络技术的标准化接口,空间数据基础结构(SDI)中越来越多地提供可重用的地理处理功能。由于用例的多样性,用于SSTA的Web服务有望重用。但是,在SDI中提供地理处理功能会带来一些挑战。聚合过程本身以及SDI中聚合功能的封装都需要全面的设计考虑。本文通过为SDI中的SSTA服务开发通用框架来解决这些挑战。该框架的原型是使用几个开源软件组件实现的。遵循模块化方法,可通过开放的标准化接口启用这些松耦合组件之间的通信。拟议工作的结果是一个框架,使用户可以轻松地对分布式时空数据进行统计临时汇总。

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