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GB/T 21336.1-2023: Geographic information - Data quality - Part 1: General requirements
Status: Valid GB/T 21336.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21336.1-2023 | English | 1989 |
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Geographic information - Data quality - Part 1: General requirements
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GB/T 21336.1-2023
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| GB/T 21336-2008 | English | 2479 |
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Geographic information -- Quality evaluation procedures
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GB/T 21336-2008
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Basic data | Standard ID | GB/T 21336.1-2023 (GB/T21336.1-2023) | | Description (Translated English) | Geographic information - Data quality - Part 1: General requirements | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A75 | | Classification of International Standard | 07.040, 35.240.70 | | Word Count Estimation | 99,999 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2023-11-27 | | Older Standard (superseded by this standard) | GB/T 21336-2008,GB/T 21337-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21336.1-2023: Geographic information - Data quality - Part 1: General requirements---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 07:040;35:240:70
CCSA75
National Standards of People's Republic of China
Replace GB/T 21336-2008, GB/T 21337-2008
Geographic information data quality Part 1: General requirements
(ISO 19157-1:2023,MOD)
Published on 2023-11-27
Implemented on 2023-11-27
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Abbreviations and package abbreviations 4
4:1 Abbreviations 4
4:2 Package abbreviation 4
5 Consistency 5
5:1 Overview 5
5:2 Data quality model content 5
5:3 Data quality model XML encoding 5
6 General requirements for geographic information quality 6
6:1 Overview 6
6:2 Data Quality---General Requirements, Recommendations and Permissions 6
7 Data Quality Overview 7
8 Data Quality Components 8
8:1 Overview of components 8
8:2 Data Quality Unit 9
8:3 Data quality elements 10
8:4 Extending the data quality information model 12
8:5 Data Quality Element Descriptor 12
9 Data Quality Metrics 16
9:1 Overview 16
9:2 Standardized data quality measures 16
9:3 User-defined data quality metrics 19
10 Data quality evaluation19
10:1 Data quality evaluation process 19
10:2 Data quality evaluation methods 21
10:3 Synthesis and derivation 22
11 Data Quality Report 22
11:1 Overview 22
11:2 Special circumstances 23
12 XML encoding requirements 24
Appendix A (Normative) Abstract Test Suite 26
A:1 Contents of data product specifications26
A:2 XML encoding 26
Appendix B (informative) Data quality concepts and their applications 27
B:1 Data Quality Conceptual Framework 27
B:2 Components of a data set structure and quality description27
B:3 When to use quality assessment procedures28
B:4 Reporting quality information29
Appendix C (Normative) Data Dictionary for Data Quality 31
C:1 Data Dictionary Overview 31
C:2 Data Quality Package Data Dictionary 32
C:3 Code List 48
Appendix D (Informative) Evaluating and reporting data quality50
D:1 Introduction 50
D:2 Dataset description50
D:3 Quality evaluation process 53
D:4 Reporting data quality59
D:5 Other examples 67
Appendix E (informative) Sampling methods used for evaluation 73
E:1 Introduction 73
E:2 Lots and units of product 73
E:3 Sample size 73
E:4 Sampling strategy 74
E:5 Probability-based sampling 76
Appendix F (informative) Guide to the use of quality elements 80
F:1 Overview 80
F:2 Data quality element categories 80
F:3 Relationships between data quality elements 82
F:4 Data Quality Elements---Application Examples 83
F:5 Discussion of difficult issues 86
Appendix G (Informative) Synthesis of Data Quality Results 87
G:1 Overview 87
G:2 100% pass/fail87
G:3 Weighted Pass/Fail87
G:4 Max/Min 88
Appendix H (Normative) XML encoding description 89
H:1 Introduction 89
H:2 XML namespace 89
H:3 XML Schema 89
Reference 90
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document is Part 1 of GB/T 21336 "Geographic Information Data Quality": GB/T 21336 has released the following parts:
---Part 1: General requirements:
This document replaces GB/T 21336-2008 "Geographical Information Quality Evaluation Process" and GB/T 21337-2008 "Geographical Information Quality
in principle": Compared with GB/T 21336-2008 and GB/T 21337-2008, in addition to structural adjustments and editorial changes, the main technical changes
transformed as follows:
---Changed the components of data quality (see 8:1, 5:1 of GB/T 21337-2008), deleted the data quality quantification elements,
Relevant expressions of quantified sub-elements of data quality and non-quantified elements of data quality (see Chapter 5 of GB/T 21337-2008);
---Added the concept of extended data quality information model (see 8:4);
---Changed the data quality element descriptor (see 8:5, 5:2:3, 6:1:6 of GB/T 21337-2008);
---Added the method of generating data quality evaluation results (see 10:3), and the relevant provisions for report derivation (see 11:2:2 and Appendix D);
--- Added XML encoding requirements for data quality definitions (see Chapter 12 and Appendix H):
This document is modified to adopt ISO 19157-1:2023 "Geographical Information Data Quality Part 1: General Requirements":
The following editorial changes have been made to this document:
---Corrected printing errors: changed "Chapter 4" in 6:2 to "Chapter 5"; changed "See E:5:3 for examples of meta-quality evaluation" in 8:5:5
Change it to "See D:5:3 for examples of meta-quality evaluation"; change "6:5:2" in note C:1:6 to "7:2"; add some instructions to "E:5" in D:1
Change "Example" to "D:5 Supplementary Examples"; change "Logical Consistency" in D:3:5:2 to "Logical Consistency"; Note to Table D:3
Change the "actual number of unit products included" in explanation a to "the excess number of unit products"; change the "see" in line 7 of Table D:14
E:4:2" is changed to "See D:4:2"; "Topological measurement absolute position accuracy" in D:5:3 is changed to "Topographic measurement absolute position"
Accuracy";
---Modified Table C:2: Added "measure" association for quality elements (see row 6 of Table C:2), subsequent classes, class attributes and relationships
The line numbers of the couplets are extended sequentially;
---Change some examples to cases that are in line with my country's national conditions: In Figures D:1~D:4 and D:3:5:1, change the road names and household names:
Change it to the Chinese name; in the E:4:3:2 example, change "UTM" to "Gauss-Krüger projection"; in F:3:3, change the
The price unit "$" is changed to RMB "$"; in F:4:1:2 Example 1, the data set range is changed to "England" and "Scotland"
"Hebei Province" and "Dezhou City"; in F:4:1:3, change "England and Wales" to "Dezhou City";
---Deleted Appendix I (informative) "Backward compatibility compared with ISO 19157:2013":
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by the Ministry of Natural Resources of the People's Republic of China:
This document is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230):
This document was drafted by: National Basic Geographic Information Center, National Surveying and Mapping Product Quality Inspection and Testing Center, Chinese Academy of Agricultural Sciences Agriculture
Institute of Resources and Agricultural Zoning, Beijing Zhongke Shuyao Information Technology Co:, Ltd:
The main drafters of this document: Liu Ruomei, Zhou Xu, Tao Shu, Jia Yunpeng, Guo Jiankun, Cheng Tao, Li Xuemei, Li Guangyong, Du Juan, Zhang Li, Zhang He,
Yao Yanmin, Bi Jiantao, Yang Gang:
The previous versions of the documents replaced by this document are as follows:
---GB/T 21336, first released in:2008;
---GB/T 21337, first released in:2008;
---This is the first revision:
Introduction
Geographical data is increasingly being shared, exchanged and used for purposes far beyond the purposes intended by the data producers: Because the value of data is
Quality is directly related: In the process of selecting geographic data, geographic data quality information is crucial: For geographical data users, it is possible to
There may be multiple data sets for them to choose from, and users can determine the data set that best meets their needs by comparing the quality of the data sets:
The purpose of describing geographic data quality is to facilitate comparison and selection of data sets that best suit application needs: A complete description of the quality of the data set can
Facilitate the sharing, exchange and application of data sets: Geographic data quality information enables data producers to evaluate their datasets against product specifications
degree of compliance and help data users evaluate the product's ability to meet their specific application requirements: In order to evaluate the quality of the data set, it is necessary to
The approach uses clearly defined evaluation procedures:
To facilitate comparison, express quality reporting results in comparable ways and achieve consensus on the data quality metrics used: These
Data quality metrics provide descriptors of geographic data quality by comparison with the domain of discourse: If incompatible metrics are used, quality comparisons will not be possible
carry out: GB/T 21336 aims to provide a framework, implementation methods and maintenance registration requirements for defining geographic data quality: Proposed to be composed of 3 parts
constitute:
---Part 1: General requirements: Establish principles for describing geographic data quality, standardize the composition and structure of data quality metrics, and define
A common data quality metric provides a common procedure for evaluating data quality:
---Part 2: XML schema implementation: Define data quality XML encoding:
---Part 3: Data Quality Metrics Register: Providing for the establishment, maintenance and publication of a register of data quality metrics in accordance with Part 1
program:
This paper argues that data producers and data users can view data quality from different perspectives: Therefore, according to the data producer’s
Determine a consistent level of quality based on product specifications or the data quality requirements of data users: If data users require more data quality information than data
If the information provided by the producer is provided, the data user can obtain additional information according to the data producer's data quality evaluation process: in this case
Below, in order to use the data processing process of the data producer, the requirements of the data user are regarded as product specifications:
The purpose of this document is to provide a framework for defining geographic data quality, including the principles of geographic data quality and concepts for processing geographic data quality information:
concepts, the structure and content of data quality measures, and guidelines for reporting quality information: This framework includes how to increase data quality metrics
Rules, which can be extended in this way, can also be used to define data quality with complex dimensions:
Geographic information data quality Part 1: General requirements
1 Scope
This document establishes principles for describing geographic data quality: This document:
---Define a complete system that describes the components of data quality;
---Clear other domain-specific definitions describing the process of describing data quality components;
---Specify the components and content structure of data quality measurements;
---Gives a general procedure for evaluating the quality of geographical data;
---Establish principles for reporting data quality:
This document also specifies a set of data quality metrics for evaluating and reporting data quality:
This document does not address minimum acceptable quality levels for geographic data: This information is usually provided as a requirement in the data product specification
Now, it can be defined according to ISO 19131:
This document is intended for data producers who provide quality information to describe and evaluate the extent to which their data sets conform to product specifications, and for data users:
Explore whether a specific geographic data quality meets the requirements of its specific application:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 19710:1-2023 Geographic information metadata Part 1: Basics (ISO 19115-1:2014, MOD)
Note: There is no technical difference between the quoted content of GB/T 19710:1-2023 and the quoted content of ISO 19115-1:2014:
GB/T 35647-2017 Geographic Information Concept Pattern Language (ISO 19103:2015, IDT)
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Accuracy
The degree of agreement between a test result or measurement result and the true value:
Note: In this document, a true value can be a reference value that is acceptable as true:
[Source: GB/T 3358:2-2009, 3:3:1, with modifications]
3:2
conformance
conformity
fulfil requirements:
Note: When there is no ambiguity, the modifier "consistency" can be omitted: For example, "test report" is equivalent to "conformance test report":
[Source: ISO 19105:2022,3:4]
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