Search Results for author: Atsushi Suzuki

Found 8 papers, 0 papers with code

Foundation of Calculating Normalized Maximum Likelihood for Continuous Probability Models

no code implementations12 Sep 2024 Atsushi Suzuki, Kota Fukuzawa, Kenji Yamanishi

The normalized maximum likelihood (NML) code length is widely used as a model selection criterion based on the minimum description length principle, where the model with the shortest NML code length is selected.

Model Selection

Tight and fast generalization error bound of graph embedding in metric space

no code implementations13 May 2023 Atsushi Suzuki, Atsushi Nitanda, Taiji Suzuki, Jing Wang, Feng Tian, Kenji Yamanishi

However, recent theoretical analyses have shown a much higher upper bound on non-Euclidean graph embedding's generalization error than Euclidean one's, where a high generalization error indicates that the incompleteness and noise in the data can significantly damage learning performance.

Graph Embedding

Cumulative Stay-time Representation for Electronic Health Records in Medical Event Time Prediction

no code implementations28 Apr 2022 Takayuki Katsuki, Kohei Miyaguchi, Akira Koseki, Toshiya Iwamori, Ryosuke Yanagiya, Atsushi Suzuki

The MET of non-communicable diseases like diabetes is highly correlated to cumulative health conditions, more specifically, how much time the patient spent with specific health conditions in the past.

Time Series Time Series Analysis

Generalization Bounds for Graph Embedding Using Negative Sampling: Linear vs Hyperbolic

no code implementations NeurIPS 2021 Atsushi Suzuki, Atsushi Nitanda, Jing Wang, Linchuan Xu, Kenji Yamanishi, Marc Cavazza

Graph embedding, which represents real-world entities in a mathematical space, has enabled numerous applications such as analyzing natural languages, social networks, biochemical networks, and knowledge bases. It has been experimentally shown that graph embedding in hyperbolic space can represent hierarchical tree-like data more effectively than embedding in linear space, owing to hyperbolic space's exponential growth property.

Generalization Bounds Graph Embedding

Generalization Error Bound for Hyperbolic Ordinal Embedding

no code implementations21 May 2021 Atsushi Suzuki, Atsushi Nitanda, Jing Wang, Linchuan Xu, Marc Cavazza, Kenji Yamanishi

Hyperbolic ordinal embedding (HOE) represents entities as points in hyperbolic space so that they agree as well as possible with given constraints in the form of entity i is more similar to entity j than to entity k. It has been experimentally shown that HOE can obtain representations of hierarchical data such as a knowledge base and a citation network effectively, owing to hyperbolic space's exponential growth property.

Riemannian TransE: Multi-relational Graph Embedding in Non-Euclidean Space

no code implementations ICLR 2019 Atsushi Suzuki, Yosuke Enokida, Kenji Yamanishi

Multi-relational graph embedding which aims at achieving effective representations with reduced low-dimensional parameters, has been widely used in knowledge base completion.

Graph Embedding Knowledge Base Completion +1

Stable Geodesic Update on Hyperbolic Space and its Application to Poincare Embeddings

no code implementations26 May 2018 Yosuke Enokida, Atsushi Suzuki, Kenji Yamanishi

A hyperbolic space has been shown to be more capable of modeling complex networks than a Euclidean space.

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