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GB/T 45257-2025Press and publication — Knowledge services — Extraction and marking up of knowledge element (English PDF)

新闻出版知识服务知识元提取与标引

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

February 28, 2025

Implementation date

June 1, 2025

Scope

GB/T 45257-2025 is the English-translated version of 新闻出版知识服务知识元提取与标引.

GB/T 45257-2025 is the Chinese national standard covering pulling knowledge elements out of published files and tagging them — the objects covered, from fixed-layout files to stream documents and ePub, the extraction methods and rules, the indexing that puts a controlled term on each element, the process and the quality requirements, and the reason for the care taken, that a wrongly marked element is retrieved by the wrong question for as long as the base lives. With the ontology standard GB/T 45256-2025. First edition, under the National Press and Publication Administration. In force from 1 June 2025. Issued on 28 February 2025, it has been in force since 1 June 2025.

Document preview — GB/T 45257-2025

National Standard of the People's Republic of China

ICS: 01.140.40
Classification: A 19

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Indexing marking﹘up
3.2 fixed﹘layout document
3.3 stream document
3.4 Morpheme
3.5 Knowledge element
4 Abbreviations

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is under the jurisdiction of the National Technical Committee for Standardization of Press and Publication (SAC/TC 527).

This document was drafted by: National Defense Industry Press, Times Publishing and Media Co., Ltd., China Architecture Publishing and Media Co., Ltd., Education Digital Publishing Co., Ltd., Beijing Tuobiao Excellence Information Technology Research Institute, China Press and Publication Research Institute, Beijing Zhongqi Intelligent Manufacturing Technology Co., Ltd.

Ltd., Baoding Kuixinda Data Processing Co., Ltd., Tongfang Knowledge Network Digital Publishing Technology Co., Ltd., Inner Mongolia Publishing Group Co., Ltd.

Company, China Agriculture Press Co., Ltd., China Traditional Chinese Medicine Press Co., Ltd., Henan Education Electronic Audio-visual Publishing House Co., Ltd.

Ltd., Tianjin University Press Co., Ltd., Research Press Co., Ltd., Beijing University of Aeronautics and Astronautics, Yingda Media Investment Group Co., Ltd. company.

The main drafters of this document are: Ouyang Liming, Li Ming, Wei Min, Long Zhengwu, Xing Jianfei, Du Xianghe, Zhou Changling, An Xiumin, Xie Bing, Liu Yingli, Yu Jingchun, Yuan Huali, Yang Jiquan, Zhu Qian, Peng Jing, Ma Liang, Wang Jinbo, Buri Gudu, Zhang Yao, Sun Haiyang, Su Hewei, Wang Xie, Jia Huijun, and Zhang Baochang.

News and Publishing Knowledge Services Knowledge Meta-Extraction and Indexing

1 Scope

This document specifies the objects, methods, rules, processes and quality requirements for the extraction and indexing of knowledge elements.

This document applies to the construction and management of knowledge bases and knowledge resource bases in the field of news publishing.

2 Normative references

GB/T 45256

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Indexing marking﹘up

The process of expressing the content or form of a resource using words or phrases according to the rules of the indexing language.

[Source. CY/T 101.1-2014, 6.2.7, modified]

3.2 fixed﹘layout document

A file generated after typesetting, containing all the data required for the solidification of the layout.

[Source. CY/T 101.1-2014, 6.3.10]

3.3 stream document

A file that presents content in a logical order and can adapt to changes in the terminal device screen or window.

[Source. CY/T 101.1-2014, 6.3.11]

3.4 Morpheme

The smallest combination of sound and meaning in a language.

3.5 Knowledge element

To meet application requirements, an independent knowledge unit that does not need to be divided further to express a complete thing or concept.

[Source. GB/T 38377-2019, 2.3]

4 Abbreviations

ePub. Electronic Publication

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 45256Press and publication — Knowledge service — Construction process of knowledge ontology

Cited by

GB/T 45256-2025Press and publication — Knowledge service — Construction process of knowledge ontology

Editions of GB/T 45257

Edition	Title	Revision	Status
GB/T 45257-2025	Press and publication - Knowledge services - Extraction and marking up of knowledge element	current edition	Current

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