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ISSDQ is an important event in the field of spatial data quality, it has been successfully held nine research conferences every two years since 1999. ISSDQ 2017 will take place in Wuhan, Hubei, China,...
The 10th International Symposium on Spatial Data Quality
The 10th International Symposium Spatial Data Quality
2017/3/10
ISSDQ is an important event in the field of spatial data quality, it has been successfully held nine research conferences every two years since 1999. ISSDQ 2017 will take place in Wuhan, Hubei, China,...
Research on China Western Spatial Data Quality Control and Evaluation Technique System
Spatial Data Quality Control Digital Linear Graphic Cloud Model Western Area
2015/12/18
The national western spatial data quality check method based on entity and evaluation method based on the cloud theory and rough set have been put forward according to the National Western Surveying a...
An Evaluation on the Data Quality of Srtm DEM at the Alpine and Plateau area, North-Western of China
DEM Shuttle Radar Topographic Mission (SRTM) evaluation Inferometric SAR (InSAR) land cover
2015/11/23
This paper evaluates the quality of SRTM3 data for alpine and plateau areas in Northwestern (NW) China against DEM data extracted from topographic maps. These SRTM data were obtained from both the ESR...
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...
DATA QUALITY IN 3D: GAUGING QUALITY MEASURES FROM USERS’ REQUIREMENTS
user needs data quality quality measures 3D data mapping
2015/9/28
Producing data of known quality is an essential operation of mapping agencies such as Ordnance Survey. For these data to be of value to our customers, we need to understand what quality measures will ...
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...
AN ONTOLOGY-DRIVEN APPROACH FOR SPATIAL DATA QUALITY EVALUATION
geographic information ontologies quality evaluation workflow management
2015/9/28
The process of spatial data quality evaluation is a set of interrelated activities aiming to produce a data quality result, and moreover,to fulfil the quality requirements set forth by the customers. ...
APPLICATION OF GML-BASED GEO-METADATA FOR DATA QUALITY INFORMATION MANAGEMENT AND DISSEMINATION ON THE WEB
Data Quality In-situ sensor Interoperability GML Metadata
2015/9/28
Nowadays developing geo-metadata with the capacity for data quality management and dissemination plays an important role in GIS/Geomatics world. Data quality information embedded in geo-metadata helps...
MODELING DATA QUALITY WITH POSSIBILITY-DISTRIBUTIONS
GIS Data Quality Metadata Modelling Fuzzy Logic Possibility Theory Interoperability
2015/9/28
Description of data quality relies heavily on numbers. When dealing with data sets, which have been collected during longer periods, however, variation in the data quality will become evident. Older d...
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...
BEYOND METADATA: TOWARDS USER-CENTRIC DESCRIPTION OF DATA QUALITY
Metadata Data Quality Standards Autocorrelation Collection-Level Metadata
2015/9/28
Data quality statements are now entrenched in metadata standards worldwide. I contrast the needs of the user with the production-control mechanisms of the producer, and argue that metadata standards a...
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...