When I build out a look-a-like model based on a seed segment. Does that look-a-like audience include or exclude the audience in the original segment that I am modelling against?
jamest66 .. it looks for eligible users based on shared characteristics from the 'selected' population.. your selected segment or trait becomes the baseline that the system algorithms use for modeling.
See if Understanding Algorithmic Models helps
That being said you can exclude certain traits to ignore when creating models from one or more data sources. See https://marketing.adobe.com/resources/help/en_US/aam/trait-exclusion-algo-models.html
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