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Function
Ref. Model
I/O Data
SubAIMs
JSON MData
Profiles
Ref. Software
Conformance
Performance
1 Functions
The Generative Face Description (PAF‑GFD) AIM produces the Face Descriptors of a machine-generated face from the Text and the Machine Speech the face utters. When a Face Personal Status is supplied, the face expresses it; when it is absent, the face carries visemes with a neutral expression:
| Receives | Text Object | The Text the face utters. |
| Machine Speech | The Speech the face utters, to which the visemes are synchronised. | |
| Face Personal Status | The Personal Status the face expresses (optional). | |
| Produces | Face Descriptors | The Face Descriptors of the machine-generated face. |
2 Reference Model
Figure 1 depicts the Reference Model of the Generative Face Description (PAF‑GFD) AIM.

Figure 1 – The Generative Face Description (PAF‑GFD) AIM
3 I/O Data
Table 1 specifies the Input and Output Data of the Generative Face Description (PAF‑GFD) AIM.
| Input | Description |
|---|---|
| Text Object | The Text the face utters. |
| Machine Speech | The Speech the face utters, to which the visemes are synchronised. |
| Face Personal Status | The Personal Status the face expresses (optional). |
| Output | Description |
| Face Descriptors | The Face Descriptors of the machine-generated face. |
4 SubAIMs
No SubAIMs.
5 JSON Metadata
https://schemas.mpai.community/PAF/V1.6/AIMs/GenerativeFaceDescription.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‑GFD 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.
| Receives | Text Object | Shall validate against Basic Text Object schema. |
| Machine Speech | Shall validate against Basic Speech Object schema. | |
| Face Personal Status | Shall validate against Personal Status schema. | |
| Produces | Face Descriptors | Shall validate against Face Descriptors Object schema. |
9 Performance Assessment
Not part of this specification.