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ADAPTIVE AND ROBUST MULTI-TASK LEARNING
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AI
DOI：10.1214/23-AOS2319.png)
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Abstract
En 中文
We study the multitask learning problem that aims to simultaneously an-alyze multiple data sets collected from different sources and learn one model for each of them. We propose a family of adaptive methods that automatically utilize possible similarities among those tasks while carefully handling their differences. We derive sharp statistical guarantees for the methods and prove their robustness against outlier tasks. Numerical experiments on synthetic and real data sets demonstrate the efficacy of our new methods.
Keywords:
Multitask learning
adaptivity
robustness
model misspecification
clustering
low-rank model
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