Search Results for author: Shintaro Fukushima

Found 6 papers, 5 papers with code

Balancing Summarization and Change Detection in Graph Streams

1 code implementation30 Nov 2023 Shintaro Fukushima, Kenji Yamanishi

The parameter specifying the summary graph is then optimized so that the accuracy of change detection is guaranteed to suppress Type I error probability (probability of raising false alarms) to be less than a given confidence level.

Change Detection

Revisiting Mobility Modeling with Graph: A Graph Transformer Model for Next Point-of-Interest Recommendation

1 code implementation2 Oct 2023 Xiaohang Xu, Toyotaro Suzumura, Jiawei Yong, Masatoshi Hanai, Chuang Yang, Hiroki Kanezashi, Renhe Jiang, Shintaro Fukushima

Extracting distinct fine-grained features unique to each piece of information is difficult since temporal information often includes spatial information, as users tend to visit nearby POIs.

Detecting Hierarchical Changes in Latent Variable Models

no code implementations18 Nov 2020 Shintaro Fukushima, Kenji Yamanishi

This paper addresses the issue of detecting hierarchical changes in latent variable models (HCDL) from data streams.

Change Detection

Online Robust and Adaptive Learning from Data Streams

1 code implementation23 Jul 2020 Shintaro Fukushima, Atsushi Nitanda, Kenji Yamanishi

We address the relation between the two parameters: one is the step size of the stochastic approximation, and the other is the threshold parameter of the norm of the stochastic update.

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