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Terms beginning with a capital letter have the meaning defined in Table 1. All MPAI-defined Terms are accessible online.

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.
Synthetic Refers to 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 the “real world”.

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

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