NeurIPS 2018 Workshop on Metalearning

TAEML: Task-Adaptive Ensemble of Meta-Learners

Minseop Park, Saehoon Kim, Jungtaek Kim, Yanbin Liu and Seungjin Choi

Most of meta-learning methods assume that a set of tasks in the meta-training phase is sampled from a single dataset. Thus when a new task is drawn from another dataset, the performance of meta-learning methods is degraded. To alleviate this effect, we introduce a task-adaptive ensemble network that aggregates meta-learners by putting more weights on the learners that are expected to perform well to the given task. Experiments demonstrate that our task-adaptive ensemble significantly outperforms previous meta-learners and their uniform averaging.

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