AI-generated Key Takeaways
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          Audience composition reports use metrics like baseline audience share, audience share, index, and score to analyze attribute relevance. 
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          baseline_audience_sharerepresents the fraction of the baseline audience with a specific attribute.
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          audience_shareindicates the fraction of the specific audience with the attribute.
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          indexis the ratio ofaudience_sharetobaseline_audience_share, showing relative prevalence.
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          scoreis a relevance score between 0 and 1.
The share and index metrics associated with an attribute in an audience composition insights report.
| Fields | |
|---|---|
| 
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 The fraction (from 0 to 1 inclusive) of the baseline audience that match the attribute. | 
| 
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 The fraction (from 0 to 1 inclusive) of the specific audience that match the attribute. | 
| 
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 The ratio of audience_share to baseline_audience_share, or zero if this ratio is undefined or is not meaningful. | 
| 
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 A relevance score from 0 to 1 inclusive. |