MPAI-PAF V1.6 AIMs Generative Body Description

Function
Ref. Model
I/O Data
SubAIMs
JSON MData
Profiles
Ref. Software
Conformance
Performance

1 Functions

The Generative Body Description (PAF‑GBD) AIM produces the Body Descriptors of a machine-generated body from the Text and the Machine Speech the body accompanies. When a Gesture Personal Status is supplied, the body expresses it; when it is absent, the body carries a neutral posture:

Receives	Text Object	The Text the body accompanies.
	Machine Speech	The Speech the body accompanies, to which the gestures are synchronised.
	Gesture Personal Status	The Personal Status the body expresses (optional).
Produces	Body Descriptors	The Body Descriptors of the machine-generated body.

Gesture is a subset of Body: the Body Descriptors include the Gesture Descriptors, so the Generative Body Description (PAF-GBD) AIM also generates the Gesture of the Avatar.

2 Reference Model

Figure 1 depicts the Reference Model of the Generative Body Description (PAF‑GBD) AIM.

Generative Body Description PAF-GBD AIM

Figure 1 – The Generative Body Description (PAF‑GBD) AIM

3 I/O Data

Table 1 specifies the Input and Output Data of the Generative Body Description (PAF‑GBD) AIM.

Table 1 – I/O Data of the Generative Body Description (PAF‑GBD) AIM

Input	Description
Text Object	The Text the body accompanies.
Machine Speech	The Speech the body accompanies, to which the gestures are synchronised.
Gesture Personal Status	The Personal Status the body expresses (optional).
Output	Description
Body Descriptors	The Body Descriptors of the machine-generated body.

4 SubAIMs

No SubAIMs.

5 JSON Metadata

https://schemas.mpai.community/PAF/V1.6/AIMs/GenerativeBodyDescription.json

6 Profiles

No Profiles.

7 Reference Software

Not part of this specification.

8 Conformance Testing

Table 2 provides the Conformance Testing Method for the PAF‑GBD AIM.

If a schema contains references to other schemas, conformance of data for the primary schema implies that any data referencing a secondary schema shall also validate against the relevant schema, if present, and conform with the Qualifier, if present.

Table 2 – Conformance Testing Method for the PAF‑GBD AIM

Receives	Text Object	Shall validate against Basic Text Object schema.
	Machine Speech	Shall validate against Basic Speech Object schema.
	Gesture Personal Status	Shall validate against Personal Status schema.
Produces	Body Descriptors	Shall validate against Body Descriptors Object schema.

9 Performance Assessment