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Terms beginning with a capital letter have the meaning defined in Table 1. Terms applicable to all MPAI Technical Specifications are defined in Table 2.

Terms beginning with a small letter have the meaning commonly defined for the context in which they are used. For instance, Table 1 defines Object and Scene but does not define object and scene.

A dash “-” preceding a Term in Table 1 indicates the following readings according to the font:

  1. Normal font: the Term in the table without a dash and preceding the one with a dash should be read before that Term. For example, “Avatar” and “- Model” will yield “Avatar Model.”
  2. Italic font: the Term in Table 1 without a dash and preceding the one with a dash should be read after that Term. For example, “Avatar” and “- Portable” will yield “Portable Avatar.”

Table 1 – Terms and Definitions relevant to MPAI-TFA

Terms Definitions
Attribute Information describing the features of a Data Type instance in addition to Sub-Type and Format.
Audio A Data Type an instance of which represents analogue signals – or is rendered to be perceived – in the human-audible range (16 Hz – 20 kHz).
Data Type A type of Data, such as Text, Speech, Audio, and Visual.
Dynamic Refers to a Data Type that is time dependent.
Format Information about the digital representation of a Sub-Type.
Machine Learning A Process using training data to create a Model able to perform specific tasks such as classification.
Real Refers to a Data Type instance that has been produced in a real space.
Qualifier A Data Type including Sub-Types (e.g., colour space information), Format (e.g., compression and transport), and Attributes (e.g., semantic information) of a Data Type instance.
Space
–          real A space that is part of the Universe, i.e., the real world.
–          Virtual A space generated and maintained by a computing platform that can be rendered.
Speech A Data Type an instance of which represents – or is rendered to be perceived – as an analogue signal with vocal characteristics.
Static Refers to a Data Type that is not time dependent.
Sub-Type A sub-category within a Data Type identified by this Technical Specification.
Synthetic A feature of a Data Type instance that has been produced in a Virtual Space.
Text A series of characters drawn from the finite alphabet of a Character Set.
Visual A Data Type an instance of which represents analogue signals – or is rendered to be perceived – in the human-visible range (380 to 700 nanometres).
Universe A synonym of “real world”.

Table 2 defines the capitalised Terms used in this standard that are not already included in Table 1.

NOTE: A hyphenated entry for e.g., “- Testing” should be read as adding that word to the closest non-hyphenated entry above it – in this case, “Conformance,” giving “Conformance Testing” as the complete entry name.

 Table 2 – MPAI-wide Terms

Term Definition
Access Static or slowly changing data that are required by an application such as domain knowledge data, data models, etc.
AI Framework (AIF) The environment where AIWs are executed.
AI Model (AIM) A data processing element receiving AIM-specific Inputs and producing AIM-specific Outputs according to according to its Function. An AIM may be an aggregation of AIMs.
AI Workflow (AIW) A structured aggregation of AIMs implementing a Use Case receiving AIW-specific inputs and producing AIW-specific outputs according to the AIW Function.
Application Standard An MPAI Standard designed to enable a particular application domain.
Assessment Laboratory A laboratory accredited to Assess the Grade of Performance of Implementations.
Channel A connection between an output port of an AIM and an input port of an AIM. The term “connection” is also used as synonymous.
Communication The infrastructure that implements message passing between AIMs.
Component One of the 7 AIF elements: Access, Communication, Controller, Internal Storage, Global Storage, Store, and User Agent
Composite AIM An AIM aggregating more than one AIM.
Component One of the 7 AIF elements: Access, Communication, Controller, Internal Storage, Global Storage, Store, and User Agent
Conformance The attribute of an Implementation of being a correct technical Implementation of a Technical Specification.
–          Testing The normative document specifying the Means to Test the Conformance of an Implementation.
–          Testing Means Procedures, tools, data sets and/or data set characteristics to Test the Conformance of an Implementation.
Connection A channel connecting an output port of an AIM and an input port of an AIM.
Controller A Component that manages and controls the AIMs in the AIF, so that they execute in the correct order and at the time when they are needed
Data Information in digital form.
–          Format The standard digital representation of Data.
–          Type An instance of Data with a specific Data Format.
–          Semantics The meaning of Data.
Descriptor Coded representation of a text, audio, speech, or visual feature.
Digital Representation Data corresponding to and representing a physical entity.
Ecosystem The ensemble of actors making it possible for a User to execute an application composed of an AIF, one or more AIWs, each with one or more AIMs potentially sourced from independent implementers.
Explainability The ability to trace the output of an Implementation back to the inputs that have produced it.
Fairness The attribute of an Implementation whose extent of applicability can be assessed by making the training set and/or network open to testing for bias and unanticipated results.
Function The operations effected by an AIW or an AIM on input data.
Global Storage A Component to store data shared by AIMs.
AIM/AIW Storage A Component to store data of the individual AIMs.
Identifier A name that uniquely identifies an Implementation.
Implementation 1.      An embodiment of the MPAI-AIF Technical Specification, or
2.      An AIW or AIM of a particular Level (1-2-3) conforming with a Use Case of an MPAI Application Standard.
Implementer A legal entity implementing MPAI Technical Specifications.
ImplementerID (IID) A unique name assigned by the ImplementerID Registration Authority to an Implementer.
ImplementerID Registration Authority (IIDRA) The entity appointed by MPAI to assign ImplementerID’s to Implementers.
Instance ID Instance of a class of Objects and the Group of Objects the Instance belongs to.
Interoperability The ability to functionally replace an AIM with another AIW having the same Interoperability Level
–          Level The attribute of an AIW and its AIMs to be executable in an AIF Implementation and to:
1.      Be proprietary (Level 1)
2.      Pass the Conformance Testing (Level 2) of an Application Standard
3.      Pass the Performance Testing (Level 3) of an Application Standard.
Knowledge Base Structured and/or unstructured information made accessible to AIMs via MPAI-specified interfaces
Message A sequence of Records transported by Communication through Channels.
Normativity The set of attributes of a technology or a set of technologies specified by the applicable parts of an MPAI standard.
Performance The attribute of an Implementation of being Reliable, Robust, Fair and Replicable.
–          Assessment The normative document specifying the Means to Assess the Grade of Performance of an Implementation.
–          Assessment Means Procedures, tools, data sets and/or data set characteristics to Assess the Performance of an Implementation.
–          Assessor An entity Assessing the Performance of an Implementation.
Profile A particular subset of the technologies used in MPAI-AIF or an AIW of an Application Standard and, where applicable, the classes, other subsets, options and parameters relevant to that subset.
Record A data structure with a specified structure
Reference Model The AIMs and theirs Connections in an AIW.
Reference Software A technically correct software implementation of a Technical Specification containing source code, or source and compiled code.
Reliability The attribute of an Implementation that performs as specified by the Application Standard, profile, and version the Implementation refers to, e.g., within the application scope, stated limitations, and for the period of time specified by the Implementer.
Replicability The attribute of an Implementation whose Performance, as Assessed by a Performance Assessor, can be replicated, within an agreed level, by another Performance Assessor.
Robustness The attribute of an Implementation that copes with data outside of the stated application scope with an estimated degree of confidence.
Scope The domain of applicability of an MPAI Application Standard
Service Provider An entrepreneur who offers an Implementation as a service (e.g., a recommendation service) to Users.
Standard A set of Technical Specification, Reference Software, Conformance Testing, Performance Assessment, and Technical Report of an MPAI application Standard.
Technical Specification (Framework) the normative specification of the AIF.

(Application) the normative specification of the set of AIWs belonging to an application domain along with the AIMs required to Implement the AIWs that includes:
1.      The formats of the Input/Output data of the AIWs implementing the AIWs.
2.      The Connections of the AIMs of the AIW.
3.      The formats of the Input/Output data of the AIMs belonging to the AIW.

Time Base The protocol specifying how Components can access timing information
Topology The set of AIM Connections of an AIW.
Use Case A particular instance of the Application domain target of an Application Standard.
User A user of an Implementation.
User Agent The Component interfacing the user with an AIF through the Controller
Version A revision or extension of a Standard or of one of its elements.
Zero Trust A cybersecurity model primarily focused on data and service protection that assumes no implicit trust.

 

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