GB/T 16900.4-2020 in English
VALIDRules for the presentation of graphical symbols—Part 4: Methods for testing symbol referent association
- Issued on:2020-03-31
- Implemented on:2020-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$301.00
| Standard No: | GB/T 16900.4-2020 |
| Document status: | VALID |
| Title in English: | Rules for the presentation of graphical symbols—Part 4: Methods for testing symbol referent association |
| Title in Chinese: | 图形符号表示规则 第4部分：对象相关性测试方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-03-31 |
| Implemented on: | 2020-10-01 |
| Chinese Classification: | A22-Terms and Symbols |
| Professional Classification: | GB-National Standard |
| Related Keywords: | control panel symbol test
symbol referent association introduction analysis medical equipment symbol graphic symbol standardization system graphic symbol proposal |
| Related Topics: | Correlation
Relative range sign between batches relative range sign relative range sign Correlation of test results What is the symbol for the test correlation method GBT16900.4 GBT16900.4-2020 Correction factor symbol representation method |
《GB/T 16900.4-2020图形符号表示规则 第4部分：对象相关性测试方法》由TC59（全国图形符号标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
GB/T16900.4-2020, as a key part of the graphic symbol standardization system, has established a scientific object relevance testing methodology for graphic symbols in scenes such as special equipment and industrial facilities. The standard innovatively solves the problem of special symbol comprehension barriers through the pre-stage of cognitive training.
Key Technical Requirements
| Testing Phase | Core Elements | Quality Control Indicators |
|---|---|---|
| Cognitive Training | Object Function List Familiarity Verification | 100% Understanding Entry |
| Test Design | Distractor Setting/"None of Them" Option | ≥7 Options/Page |
| Sample Specifications | Multi-regional Cultural Representation | ≥25 People per Region |
Solutions to implementation difficulties
Case: Medical equipment symbol test
In the control panel symbol test of a certain type of medical CT equipment, after adopting the standard recommended "cognitive training + interference items" method, the symbol recognition accuracy rate increased from 43% in traditional tests to 82%. The key steps include:
- Compile a function comparison table containing 27 professional terms
- Set up 3 sets of parallel test materials (including 10% interference pages)
- Collect 32 valid data in East China and Northwest China respectively
Standard Evolution Analysis
Compared with ISO9186-3:2014, the main technical adjustments of this standard include:
- Delete the relevant clauses of the graphic symbol proposal (to adapt to the domestic standardization process)
- Change the national test requirements to regional test requirements
- Add domestic reference standards such as GB/T18978.400
Professional implementation suggestions
1. Test material production: Ensure that the symbols are presented in a 28mm×28mm square, and the paper and electronic versions must maintain the same clarity
2. Data analysis: Record the distribution of incorrect choices according to the format of Appendix B.5, focusing on items with >15% incorrect associations
3. Multi-region testing: It is recommended to include at least one sample point from a minority region
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