Stacking

Definition

Stacking involves training base models on the same dataset and then using their predictions as inputs for a higher-level model, which learns to make a final prediction, often leading to improved accuracy over individual models.

When Stacking is used

Model ensembles

Which positions need this?

Machine Learning Engineers

Problem

Single models underperform due to limitations in complexity or diversity.

Example of how Stacking is used in AI

A machine learning competition team uses stacking to combine predictions from several algorithms to achieve top rankings in predictive accuracy.

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