The share and index metrics associated with an attribute in an audience composition insights report.
| Fields | |
|---|---|
| 
 | 
 The fraction (from 0 to 1 inclusive) of the baseline audience that match the attribute. | 
| 
 | 
 The fraction (from 0 to 1 inclusive) of the specific audience that match the attribute. | 
| 
 | 
 The ratio of audience_share to baseline_audience_share, or zero if this ratio is undefined or is not meaningful. | 
| 
 | 
 A relevance score from 0 to 1 inclusive. |