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Table 3 gives the subset of MMM terms and definitions that are referenced in this document.

Table 3 – Basic terms and definition applicable to this document

  Term  
General Action An operation affecting an Item.
Capability The ability of a Process to perform Actions of Items.
Data Information represented in digital form.
DataMdata The combination of Data and Metadata that is not (yet) an Item.
Data Format The syntax and semantics of Data.
Data Type Data used in Actions and Items.
Functionality A standard feature provided by an M-Instance to be enabled by Common Metaverse Specifications Tools.
Functional Requirement A Functionality that is expected to be provided by an entity.
Item Data and Metadata supported and identified by an M-Instance.
Manager The entity overseeing the operation of an M-Instance.
Media Data in a Device that can be:

1.      MU-Actuated

2.      Identified as an Entity.
Metadata An attribute of Data, e.g., of a User, an Object, or a Service.
Metaverse A set of Processes providing some or all the following functions:

1.      To sense data from U-Locations.

2.      To process the sensed data and produce Data.

3.      To produce one or more M-Environments populated by Objects that can be either digitised or virtual, the latter with or without autonomy.

4.      To process Objects from the M-Instance or potentially from other M-Instances to affect U- and/or M-Environments using Object in ways that are:

4.1.   Consistent with the goals set for the M-Instance.

4.2.   Effected within:

4.2.1.     The capabilities of the M-Instance

4.2.2.     The Rules set for the M-Instance.
Profile A set of base standards and/or their subsets.
Use Case An example of how an application domain can be supported by the Functionalities of an M-Instance/Environment.
Universe The physical world.
Process App An application-specific Program executed on a Device.
Device A Process able to:

1.      UM-Capture Data from a U-Location

2.      UM-Send Data and Metadata to a User.

and/or

1.      MM-Send an Entity from an M-Location to the Device.

2.      MU-Render an Entity at a U-Location.
Service A Process that can be called to provide specific Functionalities.
User A Process representing a human that is UM-Animated by a Stream or MM-Animated by an autonomous agent.
Item Account An Item that uniquely references a human who has Registered. A User may have more than one Account with one or more Services.
Activity Data An Item containing the record of all the Actions made by a User.
Asset An Item that may be the object of a Transaction. It may be MM-Embedded at an M-Location or Posted to a Service.
AuthenticateIn An Item containing:

1.      The Entity or the ID of the Entity to be Authenticated.

2.      Information related to the rendering of AuthenticateOut.
AuthenticateOut An Item containing the result of processing the Request-Authenticate Action and its rendering.
Contract A Program and its Metadata stored on a Device. It is activated by an external entity, e.g., a User, or another activated Contract.
DiscoverIn An Item containing:

1.      A description of the Items to be Discovered.

2.      Information related to the rendering of DiscoverOut.
DiscoverOut An Item containing the description of the Items Discovered and information related to its rendering.
Entity Any of the following Items that can be MU-Rendered: Object, Model, Scene, Event, and Experience.
Event An Entity that includes selected Entities at an M-Location and their Animations during a period.
Experience An Entity comprising User-selected Entities of an Event and the User Interactions with the Entities of the Event.
Identifier An Item that uniquely references an Item in an M-Instance.
InformIn An Item containing:

1.      A description of the Item about which information is requested.

2.      Information related to the rendering of InformOut.
InformOut An Item containing the description of the Item object of an InformIn.
Interaction An Item containing the Request-Action issued by a User on an Entity at an M-Locations and the corresponding Times.
InterpretIn An Item containing:

1.      The ID or the Item to be Interpreted.

2.      Information related to the rendering of InterpretOut.
InterpretOut An Item containing the description of the Item object of an InterpretIn Item.
Ledger An Item containing a list of Transactions involving Assets.
Map An Item containing a structure establishing a correspondence between U-Locations with M-Locations.
M-Environment An Identified subset of an M-Instance.
Message An Item containing application-specific Data MM-Sent by a Source Process to a Destination Process.
M-Instance An Identified delimited space of an M-Environment.
M-Location An Identified delimited space of an M-Environment.
Model An Object representing an object with its features ready to be MM-Animated or UM-Animated.
Object An Entity representing an object.
Persona A Model representing a human.
Personal Profile An Item containing the Data about the human represented by a User.
Program Data that can be executed
Provenance The Ledger associated with a specific Asset.
Request-Action An Item of the request to a Process to perform an Action as defined in this document.
Response-Action An Item containing the response of a Process to a Request-Action as defined in this document.
Rights  An Item expressing the ability of a Process to perform an Action on an Item.
Rules An Item expressing the terms and conditions under which a User operates in an M-Instance or M-Environment.
Scene A possibly hierarchical Composition of Objects having Spatial Attitudes.
Social Graph A representation of a User’s network of connections with Items and Processes.
Stream An Item made by a continuous flow of Data.
Transaction Item representing the changed state of the Accounts and the Rights of a seller User and a buyer User on an Asset and optionally of the Service facilitating/enabling the Transaction
U-Location An identifiable delimited portion of the Universe.
User Data An Item containing Activity Data, Personae, Social Graph, and User Profile of a User.
Value An Amount and the Currency with which the Amount is expressed.
Wallet A container of Currency units. In general, a Wallet is implemented outside of the Environment.
Action Authenticate The Action of requesting that a Service confirm that an Entity is what it claims to be.
Author The Action of Calling a Service to obtain an Entity with associated OutRights to Act on the Entity.
Change The Action of requesting that a Service modify the Rights of a User and provide OutRights, e.g., to further Change the Rights.
Convert The Action of requesting that a Service change the Format of the Data of an Item into a Format specified by a FormatID.
Discover The Action of requesting that a Service provide a DiscoveryOut Item containing:

1.      The IDs of the Items relevant to the User’s request to Discover expressed in the DiscoverIn Item

2.      The OutRights to Act on the DiscoverOut Item.
Execute The Action of requesting that a Process execute a Contract.
Hide The Action of requesting that a Service make the ID of an Item unavailable and provide OutRights, e.g., to make the ID available again.
Identify The Action of requesting that a Service produce an Item from Data & Metadata.
UM-Import The Action of a User requesting that a Service read Data & Metadata stored at an Address.
Inform The Action of requesting that a Service provide an InformOut Item containing information about an InItem, such as the Metadata of the InItem, with the OutRights to Act on the InformOut Item.
Interpret The Action of requesting that a Service provide an InterpretOut Item containing interpretation of an InItem, such as translation or extraction of Personal Status, with the OutRights to Act on the InterpretOut Item.
MM-Add The Action of requesting that a Service add an Entity at an M-Location with a Spatial Attitude and provide OutRights to Act on the MM-Added Entity.
MM-Animate The Action of requesting that a Service change the features of a Model MM-Embedded at an M-Location with a Stream and provide the OutRights to Act on the MM-Added Entity.
MM-Disable The Action of requesting that a Service stop MM-Enabling selected Entities Embedded at an M-Location and provide OutRights to Act on the MM-Disabled Entities.
MM-Embed The Composite Action of requesting that a Service MM-Add and MM-Enable an Entity either located at a Service or at an M-Location at a destination M-Location with a Spatial Attitude and provide OutRights to Act on the MM-Embedded Entity.
MM-Enable The Action of requesting that a Service accept requests to MM-Send selected Entities MM-Added at an M-Location or to MM-Embed those selected Entities at a destination M-Location and provide OutRights to act on the M-Entities.
MM-Send The Action of requesting that a Service forward to a Process an Item with OutRights to Act on the Item, or Data/Metadata.
Modify The Action of requesting that a Service produce a new Item from an existing Item by providing new Data and Metadata with the OutRights to further Act on the new Item.
MU-Actuate The Action of requesting that a Device present an Entity available at a Device to a U-Location as Media with a Spatial Attitude.
MU-Render The Composite Action of requesting that:

1.      A Service MM-Send selected Entities Embedded at an M-Location to a Device.

2.      The Device MU-Actuate at a U-Location with a Spatial Attitude the Entity received.

MU-Send

 The Action of requesting that a Process transmit an Item to a Device or store an Item at an Address.
Post The Action of requesting that a Marketplace include an Asset to its repertory of Assets.
Register The Action of a human requesting that an M-Instance grant their Users the Rights to perform Actions in the M-Instance.
Resolve The Action of requesting that a Service forward a Request-Action or a Response-Action to a Resolution Service in another M-Instance.
Track The Composite Action of requesting that a Service:

1.      MM-Embed a Model at an M-Location with a Spatial Attitude.

2.      MU-Animate the Model MM-Embedded at an M-Location.

MU-Render specified Entities at the M-Location to a U-Location.
Transact The Action of a User1 requesting that a Service:

1.      Assign Rights on an Asset to User2 (“buyer”).

2.      Cause:

2.1.   Wallet1 of User1 (“seller”) to be increased by Value1.

2.2.   Wallet2 of User2 to be decreased by Value2.

Wallet3 of the Service enabling/facilitating the Transaction to be increased by Value3 (optionally).
UM-Animate The Composite Action of a User requesting:

1.      A Device to

1.1.   UM-Capture an animation stream extracted from a scene at a U-Location.

1.2.   UM-Send the animation stream and Metadata to a User.

2.      A Service to Identify the Animation Stream.

3.      A Service to MM-Animate the Model MM-Embedded at the M-Location using the Animation Stream.
UM-Capture The Action of requesting that a Device capture Media from a scene at a U-Location.
UM-Render The Composite Action of a User requesting:

1.      A Device to:

1.1.   UM-Capture a scene at U-Location.

1.2.   MM-Send Data and Device-provided Metadata to a User.

2.      A Service to:

2.1.   Identify an Entity from UM-Sent Data and Metadata.

2.2.   MM-Embed the Entity at an M-Location with a Spatial Attitude.
UM-Send The Action of a Device transmitting Item or Data & Metadata to a Process.
Validate The Action of requesting that a Service verify that a Process has the Rights to perform or request a Process to perform an Action on an Item.
Data Type Address The URL of a storage facility.
Amount A number expressing a Value in a Currency.
Cognitive State The representation of a User’s Personal Status that reflects the way they understand the Environment, such as “Confused”, “Dubious”, “Convinced”.
Coordinates A set of numbers representing a Position in a Metaverse Environment using a coordinate system.
Currency A medium of exchange enabling Transactions in a Metaverse Environment.
Emotion The representation of a User’s Personal Status that results from their interaction with an Environment, such as “Angry”, “Sad”, “Determined”.
Orientation The set of the 3 roll, pitch, yaw angles indicating the rotation around the principal axis (x) of an Object, its y axis having an angle of 90˚ counterclockwise (right-to-left) with the x axis and its z axis (pointing up toward a viewer viewing from above).
Personal Status The representation of the information internal to a User characterising their behaviour.
Point A point in an M-Environment identified by the set of local Coordinates.
Point of View The Spatial Attitude of a Persona watching an Environment.
Position The Coordinates of a point in a Metaverse Environment using a Coordinate system.
Social Attitude The representation of a User’s Personal Status related to the way it intends to position vis-à-vis an M-Environment, e.g., “Respectful”, “Confrontational”, “Soothing”.
Spatial Attitude The Position and Orientation of an Entity, and their velocities and accelerations.
Time The representation of the measure of time.

 

 

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