搜索结果: 1-15 共查到“空间大地测量学 quality”相关记录15条 . 查询时间(0.14 秒)
Contributions to a quality description of areal objects in spatial data sets
spatial data quality comparison of spatial entities building extraction
2016/5/20
In this paper we present a quality evaluation of two-dimensional building acquisition. We propose methods for identification and quantifi-cation of differences between independently acquired regions, ...
Integrated use of spatial data and learning algorithms to detect water quality trends
Integrated spatial data learning algorithms detect water quality trends
2016/5/20
This paper presents the first results of a study which investigates river basin water quality management based on the ability of GIS to integrate different data sources into a common geographical data...
USING SDI AND WFS FOR QUALITY ASSURANCE ON FIELD DATA COLLECTION
SDI Web Feature Services Data Quality Field Data Collection
2015/12/23
Nowadays, various organizations collect new spatial data or update existing ones. If a specific information community collects spatial data with regards to its own requirements, purposes and applicati...
A Study of GIS-SD Based Temporal-Spatial Modeling Spatial and Temporal Patterns of Global H5N1 Outbreaks of Water Quality in Water Pollution Accidents
Temporal Spatial Simulation Pollution Decision Support Hydrology
2015/12/1
In this paper, the one-dimension river quality system dynamics model was applied to the water quality simulation, and the conceptual GIS-SD frame was constructed. Based on the component GIS and system...
THE IMPACT OF SPATIAL DATA QUALITY ON COMPANY’S DECISION MAKING
Spatial data spatial information business information analysis decision-making benefit
2015/9/28
The impact of spatial data quality on decision-making depends on the role of the geographic information system (GIS) in the company. The requirements for data quality are different depending on whethe...
QUALITY CONTROL IN LARGE SPATIAL DATABASES MAINTAINANCE
Quality Spatial Data Data acceptance Criteria Automated Quality Control
2015/9/28
The heart of any spatial systems is its strong reliable database. The spatial database is a complex in nature which requires special technical skills to maintain it. The discrepancies in database can ...
WHAT COMMUNICATES QUALITY TO THE SPATIAL DATA CONSUMER?
spatial data quality consumers communication
2015/9/28
For almost 20 years now, spatial data providers have been creating and publishing metadata records for their products. One intention of the metadata, which includes detailed data quality information, ...
FORMAL LANGUAGES FOR EXPRESSING DATA CONSISTENCY RULES AND IMPLICATIONS FOR REPORTING OF QUALITY METADATA
Re-use rules metrics mining languages metadata
2015/9/28
Over the past thirty years, in excess of 36 billion dollars has been invested in the collection of spatial information across the public sector in Europe (PIRA, 2000). There is a clear imperative now ...
THE NATURE OF PRISMS: EXPLORING DATA QUALITY AND VAGUENESS IN DYNAMIC SPATIO-TEMPORAL CONSTRUCTS
Space-time data models lifelines vagueness uncertainty space-time prism rod-field model
2015/9/28
Hagerstrand's minimalist representation of individual lives and opportunities as lifelines and prisms predates the technologies available to current GIScience but resonates with many emerging spatio-t...
Quality Assessment in Spatial Clustering of Data Mining
Spatial Data Mining Quality Assessment Clustering Compactness Separation
2015/9/28
Because of the use of computers and its advances in scientific data handling and advancement of various geo and space borne sensors, we are now faced with a large amount of data. Therefore, the develo...
STORING AND QUERYING SPATIALLY VARYING DATA QUALITY INFORMATION USING AN INTEGRATED SPATIAL RDBMS
quality spatial variation metadata sub-feature variation spatial database
2015/9/28
Current representations of spatial data quality (SDQ) do not adequately represent the spatial variation of SDQ. For example, a user who wants to know the positional accuracy of a feature usually has t...
SPATIAL DATA QUALITY AND A WORKFLOW TOOL
Spatial Data Quality Communication Producer Consumer Fitness for Use Open Data LPIS ETS
2015/9/21
Although by many perceived as important, spatial data quality has hardly ever been taken centre stage unless something went wrong due to bad quality. However, we think this is going to change soon. We...
CARTOGRAPHIC REPRESENTATION OF SPATIAL DATA QUALITY IN VGI FOR USERS WITH DIFFERENT SEMANTICS
Spatial Data Quality Users’ Semantics VGI Positional Accuracy Completeness
2015/9/21
Volunteered geographic information is constantly being added, edited or removed by users. Most of VGI users are not experts, thus formal representation of spatial data quality parameters through metad...
GENERALISATION AND DATA QUALITY
Data Quality Quality Criteria Automatic Generalisation Validation Fitness for Purpose
2015/9/21
The quality of spatial data has a massive impact on its usability. It is therefore critical to both the producer of the data and its users. In this paper we discuss the close links between data qualit...
ONTOLOGY BASED QUALITY EVALUATION FOR SPATIAL DATA
spatial data quality rule based evaluation data quality evaluation spatial ontology GeoSPARQL SWRL
2015/9/21
Many institutions will be providing data to the National Spatial Data Infrastructure (NSDI). Current technical background of the NSDI is based on syntactic web services. It is expected that this will ...