ISO/IEC TS 5723:2022 信頼性—用語、語彙 | ページ 6

3.1.1

信頼性

検証可能な（3.3.12） 方法で 利害関係者（3.3.8）の 期待に応える能力

注記 1:コンテキストまたはセクターに応じて、また使用される特定の製品またはサービス、データ、テクノロジー、およびプロセスに応じて、さまざまな特性が適用され、利害関係者の期待が確実に満たされるようにするための検証が必要です。

注記2:信頼性の特徴には、例えば、 説明責任 (3.2.1) 、 正確さ (3.2.2) 、 真正性 (3.2.3) 、 可用性 (3.2.4) 、 制御可能性 (3.2.5) 、 完全性 ( 3.2.7, 3.2.8) , プライバシー (3.2.9) , 品質 (3.2.10, 3.2.11) , 信頼性 (3.2.12, 3.2.13) , 回復力 (3.2.14, 3.2.15) , 堅牢性(3.2.16) 、 安全性 (3.2.17) 、 セキュリティ (3.2.18) 、 透明性 (3.2.19, 3.2.20) および 使いやすさ (3.2.21) 。

注記 3:信頼性は、サービス、製品、技術、データ、情報、および組織に適用できる属性です。

注記4 検証可能性（3.3.12） には， 測定可能性（3.3.5） と 客観的証拠による実証可能性（3.3.7） が含まれる。

3.2.1

accountability

state of being accountable (3.3.1)

Note 1 to entry: Accountability relates to an allocated responsibility. The responsibility can be based on regulation or agreement or through assignment as part of delegation.

Note 2 to entry: For systems (3.3.10) , accountability is a property that ensures that actions of an entity can be traced uniquely to the entity (see ISO 7498-2:1989, 3.3.3).

Note 3 to entry: In a governance context, accountability is the obligation of an individual or organization to account for its activities, for completion of a deliverable or task, accept the responsibility for those activities, deliverables or tasks, and to disclose the results in a transparent manner (see ISO/TS 21089:2018, 3.3.1).

[SOURCE:ISO/IEC 38500:2015, 2.3, modified — Note 2 to entry and Note 3 to entry have been added.]

3.2.2

accuracy

measure of closeness of results of observations, computations, or estimates to the true values or the values accepted as being true

[SOURCE:ISO 17572-1:2022, 3.1]

3.2.3

authenticity

property that an entity is what it claims to be

[SOURCE:ISO/IEC 27000:2018, 3.6]

3.2.4

availability

property of being accessible and usable on demand by an authorized entity

[SOURCE:ISO/IEC 27000:2018, 3.7]

3.2.5

controllability

property of a system (3.3.10) that allows a human or another external agent to intervene in the system’s functioning

Note 1 to entry: Such a system is heteronomous.

[SOURCE:ISO/IEC 22989:2022, 3.5.6, modified — The admitted term “controllable” has been removed and “an AI system” has been changed to “a system”.]

3.2.6

information security

preservation of confidentiality, integrity (3.2.7, 3.2.8) and availability (3.2.4) of information

Note 1 to entry: In addition, other properties, such as authenticity (3.2.3) , accountability (3.2.1) , non- repudiation, and reliability (3.2.12, 3.2.13) can also be involved.

[SOURCE:ISO 27000:2018, 3.28]

3.2.7

integrity

<data> property whereby data have not been altered in an unauthorized manner since they were created, transmitted, or stored

[SOURCE:ISO/IEC 29167-19:2019, 3.3, modified — The domain has been added.]

3.2.8

integrity

<systems> property of accuracy (3.2.2) and completeness

[SOURCE:ISO/IEC 27000:2018, 3.36, modified — The domain has been added.]

3.2.9

privacy

freedom from intrusion into the private life or affairs of an individual

[SOURCE:ISO/IEC 2382:2015, 2.22, modified — The section “when that intrusion results from undue or illegal gathering and use of data about that individual" has been removed from the definition and the Note to entry has been removed.]

3.2.10

quality

<data> degree to which the characteristics of data satisfy stated and implied needs when used under specified conditions

[SOURCE:ISO/IEC 25024:2015, 4.11, modified — “data” is removed from the term and the domain has been added.]

3.2.11

quality

<system> degree to which a set of inherent characteristics of an object fulfils requirements

Note 1 to entry: An object can be a product, process or service.

[SOURCE:ISO 9000:2015, 3.6.2, modified — Original Note 1 to entry and Note 2 to entry have been removed; a new Note 1 to entry has been added and the domain of “<system>” has been added.]

3.2.12

reliability

<cybersecurity> property of consistent intended behaviour and results

[SOURCE:ISO/IEC 27000:2018, 3.55, modified — The domain has been added.]

3.2.13

reliability

<system> ability of an item to perform as required, without failure, for a given time interval, under given conditions

Note 1 to entry: The time interval duration can be expressed in units appropriate to the item concerned (e.g. calendar time, operating cycles, distance run, etc.) and the units should always be clearly stated.

Note 2 to entry: Given conditions include aspects that affect reliability, such as: mode of operation, stress levels, environmental conditions, and maintenance.

[SOURCE:IEC 60050-192:2015, 192-01-24, modified — The domain has been changed, the phrase"of an item" has been added at the beginning of the definition and Note 3 to entry has been removed.]

3.2.14

resilience

<governance> ability to anticipate and adapt to, resist, or quickly recover from a potentially disruptive event, whether natural or man-made

[SOURCE:ISO 15392:2019, 3.21, modified — The domain has been added.]

3.2.15

resilience

<system> capability (3.3.2) of a system (3.3.10) to maintain its functions and structure in the face of internal and external change, and to degrade gracefully when this is necessary

3.2.16

robustness

ability of a system (3.3.10) to maintain its level of performance under a variety of circumstances

[SOURCE:ISO/IEC 22989:2022, 3.5.12, modified — “any” has been changed to “a variety of”.]

3.2.17

safety

property of a system (3.3.10) such that it does not, under defined conditions, lead to a state in which human life, health, property, or the environment is endangered

[SOURCE:ISO/IEC/IEEE 12207:2017, 3.1.48, modified — “expectation that a system” has been changed to “property of a system such that it”.]

3.2.18

security

resistance to intentional, unauthorized act(s) designed to cause harm or damage to a system (3.3.10)

[SOURCE:ISO/IEC 23643:2020, 3.16]

3.2.19

transparency

<information> open, comprehensive, accessible, clear and understandable presentation of information

[SOURCE:ISO 16759:2013, 3.8.4, modified — The domain has been added.]

3.2.20

transparency

<systems> property of a system (3.3.10) or process to imply openness and accountability (3.2.1)

[SOURCE:ISO/IEC 27036-3:2013, 3.3, modified — The domain has been added.]

3.2.21

usability

extent to which a system (3.3.10) product or service can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use

Note 1 to entry: The “specified” users, goals and context of use refer to the particular combination of users, goals and context of use for which usability is being considered.

Note 2 to entry: The word “usability” is also used as a qualifier to refer to the design knowledge, competencies, activities and design attributes that contribute to usability, such as usability expertise, usability professional, usability engineering, usability method, usability evaluation, usability heuristic.

[SOURCE:ISO 9241-11:2018, 3.1.1]

3.3.1

accountable

answerable for actions, decisions, and performance

[SOURCE:ISO/IEC 38500:2015, 2.2]

3.3.2

capability

measure of capacity and the ability of an entity ( system (3.3.10) , person or organization) to achieve its objectives

[SOURCE:ISO/IEC 19770-1:2017, 3.10, modified — Note 1 to entry and domain <asset management> have been removed.]

3.3.3

constituent system

independent system (3.3.10) that forms part of a system of systems (SoS) (3.3.11)

Note 1 to entry: Constituent systems can be part of one or more SoS. Each constituent system is a useful system by itself, having its own development, management, utilization, goals, and resources, but interacts within the SoS to provide the unique capability (3.3.2) of the SoS.

[SOURCE:ISO/IEC/IEEE 21839:2019, 3.1.1]

3.3.4

dependability

<of an item> ability to perform as and when required

Note 1 to entry: Dependability includes availability (3.2.4) , reliability (3.2.12, 3.2.13) , recoverability, maintainability, and maintenance support performance, and, in some cases, other characteristics such as durability, safety (3.2.17) and security (3.2.18) .

Note 2 to entry: Dependability is used as a collective term for the time-related quality (3.2.10, 3.2.11) characteristics of an item.

[SOURCE:IEC 60050-192:2015, 192-01-22]

3.3.5

measurability

ability to assess an attribute of an entity against a metric (3.3.6)

Note 1 to entry: The word"measurable" is the adjective form of measurability.

3.3.6

metric

defined measurement method and measurement scale

[SOURCE:ISO/IEC 14102:2008, 3.4]

3.3.7

objective evidence

data supporting the existence or verity of something

Note 1 to entry: Objective evidence can be obtained through observation, measurement, test, or other means.

[SOURCE:ISO 9000:2005, 3.8.1]

3.3.8

stakeholder

any individual, group, or organization that can affect, be affected by, or perceive itself to be affected by a decision or activity

[SOURCE:ISO/IEC 38500:2015, 2.24]

3.3.9

socio-technical system

system (3.3.10) that includes a combination of technical and human or natural elements

[SOURCE:INCOSE SEBoK]

3.3.10

system

combination of interacting elements organized to achieve one or more stated purposes

[SOURCE:ISO/IEC/IEEE 21840:2019, 3.1.8]

3.3.11

system of systems

set of systems (3.3.10) and system elements that interact to provide a unique capability (3.3.2) that none of the constituent systems (3.3.3) can accomplish on its own

Note 1 to entry: System elements can be necessary to facilitate interaction of the constituent systems in the system of systems.

[SOURCE:ISO/IEC/IEEE 21840:2019, 3.1.10]

3.3.12

verifiable

can be checked for correctness by a person or tool

[SOURCE:ISO/IEC/IEEE 15289:2019, 3.1.29]