Search Results for author: Jiayi Xian

Found 5 papers, 2 papers with code

Improving Uncertainty Calibration of Deep Neural Networks via Truth Discovery and Geometric Optimization

1 code implementation25 Jun 2021 Chunwei Ma, Ziyun Huang, Jiayi Xian, Mingchen Gao, Jinhui Xu

Deep Neural Networks (DNNs), despite their tremendous success in recent years, could still cast doubts on their predictions due to the intrinsic uncertainty associated with their learning process.

Meta-Learning with Neural Tangent Kernels

no code implementations7 Feb 2021 Yufan Zhou, Zhenyi Wang, Jiayi Xian, Changyou Chen, Jinhui Xu

We achieve this goal by 1) replacing the adaptation with a fast-adaptive regularizer in the RKHS; and 2) solving the adaptation analytically based on the NTK theory.

Meta-Learning

Meta-Learning in Reproducing Kernel Hilbert Space

no code implementations ICLR 2021 Yufan Zhou, Zhenyi Wang, Jiayi Xian, Changyou Chen, Jinhui Xu

Within this paradigm, we introduce two meta learning algorithms in RKHS, which no longer need an explicit inner-loop adaptation as in the MAML framework.

Meta-Learning

Consistent $k$-Median: Simpler, Better and Robust

1 code implementation13 Aug 2020 Xiangyu Guo, Janardhan Kulkarni, Shi Li, Jiayi Xian

In this paper we introduce and study the online consistent $k$-clustering with outliers problem, generalizing the non-outlier version of the problem studied in [Lattanzi-Vassilvitskii, ICML17].

Clustering

Graph Neural Networks with Composite Kernels

no code implementations16 May 2020 Yufan Zhou, Jiayi Xian, Changyou Chen, Jinhui Xu

We then propose feature aggregation as the composition of the original neighbor-based kernel and a learnable kernel to encode feature similarities in a feature space.

Graph Attention

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