Q: 11
You work at a subscription-based company. You have trained an ensemble of trees and neural
networks to predict customer churn, which is the likelihood that customers will not renew their
yearly subscription. The average prediction is a 15% churn rate, but for a particular customer the
model predicts that they are 70% likely to churn. The customer has a product usage history of 30%, is
located in New York City, and became a customer in 1997. You need to explain the difference
between the actual prediction, a 70% churn rate, and the average prediction. You want to use Vertex
Explainable AI. What should you do?
Options
Discussion
B . Some folks go for C but integrated gradients is mostly for images and text, not tabular data like churn. Easy trap there.
Sampled Shapley values (B) is what Vertex Explainable AI uses for feature attribution on tabular data. Integrated gradients aren't supported in this case, that's more for images or text. Pretty sure B is the right move here.
Probably B, integrated gradients (C) is tempting but it's a trap for tabular data like this.
B from what I've seen in recent exam reports, sampled Shapley is the go-to for tabular churn with Vertex Explainable AI.
Why not use local surrogate models for this scenario? Has anyone seen official practice tests suggest A or is it always Shapley (B)?
A is wrong, B. Integrated gradients is a trap since it’s not supported for tabular data here.
I get why some folks might pick C, but for Vertex Explainable AI and tabular churn data, it's probably B.
Why not just use integrated gradients here? Is there a reason Vertex Explainable AI doesn't support that for tabular churn data, even if it's an ensemble model? I thought integrated gradients explained feature impacts well, so why is Shapley preferred in this case?
B
I don’t think it’s B. C. Integrated gradients sometimes get used for explainability, especially when you want to trace prediction changes as inputs shift from baseline, and might still help even if it’s not image data. Maybe there’s a trap here with Shapley?
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