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Akifumi Okuno

4 accepted papers

2020

Extrapolation Towards Imaginary 0-Nearest Neighbour and Its Improved Convergence Rate

NeurIPS 2020poster

$k$-nearest neighbour ($k$-NN) is one of the simplest and most widely-used methods for supervised classification, that predicts a query's label by taking weighted ratio of observed labels of $k$ objects nearest to the query. The weights and the parameter $k \in \mathbb{N}$ regulate its bias-variance…

Cited by 3SourcePDFScholar
2019

Graph Embedding with Shifted Inner Product Similarity and Its Improved Approximation Capability

AISTATS 2019poster

We propose shifted inner-product similarity (SIPS), which is a novel yet very simple extension of the ordinary inner-product similarity (IPS) for neural-network based graph embedding (GE). In contrast to IPS, that is limited to approximating positive-definite (PD) similarities, SIPS goes beyond the…

Cited by 12SourcePDFScholar
2018

A probabilistic framework for multi-view feature learning with many-to-many associations via neural networks

ICML 2018oral

A simple framework Probabilistic Multi-view Graph Embedding (PMvGE) is proposed for multi-view feature learning with many-to-many associations so that it generalizes various existing multi-view methods. PMvGE is a probabilistic model for predicting new associations via graph embedding of the nodes o…

Cited by 14SourcePDFScholar