1 code implementation • 28 Jun 2024 • Maciej Falkiewicz, Naoya Takeishi, Alexandros Kalousis
Additionally, we review the literature on the Generalized KS test and discuss the connections between KSGAN and existing adversarial generative models.
1 code implementation • NeurIPS 2023 • Maciej Falkiewicz, Naoya Takeishi, Imahn Shekhzadeh, Antoine Wehenkel, Arnaud Delaunoy, Gilles Louppe, Alexandros Kalousis
Bayesian inference allows expressing the uncertainty of posterior belief under a probabilistic model given prior information and the likelihood of the evidence.
1 code implementation • 16 Jun 2023 • João A. Cândido Ramos, Lionel Blondé, Naoya Takeishi, Alexandros Kalousis
In this paper, we introduce MAAD, a novel, sample-efficient on-policy algorithm for Imitation Learning from Observations.
no code implementations • 22 May 2023 • Keisuke Fujii, Kazushi Tsutsui, Atom Scott, Hiroshi Nakahara, Naoya Takeishi, Yoshinobu Kawahara
In the experiments, using chase-and-escape and football tasks with the different dynamics between the unknown source and target environments, we show that our approach achieved a balance between the reproducibility and the generalization ability compared with the baselines.
1 code implementation • 24 Oct 2022 • Naoya Takeishi, Alexandros Kalousis
The combination of deep neural nets and theory-driven models, which we call deep grey-box modeling, can be inherently interpretable to some extent thanks to the theory backbone.
no code implementations • 4 Jun 2022 • Keisuke Fujii, Koh Takeuchi, Atsushi Kuribayashi, Naoya Takeishi, Yoshinobu Kawahara, Kazuya Takeda
Evaluation of intervention in a multiagent system, e. g., when humans should intervene in autonomous driving systems and when a player should pass to teammates for a good shot, is challenging in various engineering and scientific fields.
no code implementations • 23 Nov 2021 • Naoya Ozaki, Kanta Yanagida, Takuya Chikazawa, Nishanth Pushparaj, Naoya Takeishi, Ryuki Hyodo
One of the mission design solutions is utilizing asteroid flyby cycler trajectories with multiple Earth gravity assists.
1 code implementation • NeurIPS 2021 • Keisuke Fujii, Naoya Takeishi, Kazushi Tsutsui, Emyo Fujioka, Nozomi Nishiumi, Ryoya Tanaka, Mika Fukushiro, Kaoru Ide, Hiroyoshi Kohno, Ken Yoda, Susumu Takahashi, Shizuko Hiryu, Yoshinobu Kawahara
In this paper, we propose a new framework for learning Granger causality from multi-animal trajectories via augmented theory-based behavioral models with interpretable data-driven models.
no code implementations • NeurIPS 2021 • Naoya Takeishi, Alexandros Kalousis
A key technical challenge is to strike a balance between the incomplete physics and trainable components such as neural networks for ensuring that the physics part is used in a meaningful manner.
no code implementations • 19 Feb 2021 • Naoya Takeishi, Keisuke Fujii, Koh Takeuchi, Yoshinobu Kawahara
Extracting coherent patterns is one of the standard approaches towards understanding spatio-temporal data.
1 code implementation • 7 Jul 2020 • Keisuke Fujii, Naoya Takeishi, Yoshinobu Kawahara, Kazuya Takeda
Extracting the rules of real-world multi-agent behaviors is a current challenge in various scientific and engineering fields.
no code implementations • 16 Jun 2020 • Naoya Takeishi, Yoshinobu Kawahara
Invariance and stability are essential notions in dynamical systems study, and thus it is of great interest to learn a dynamics model with a stable invariant set.
1 code implementation • 9 Apr 2020 • Naoya Takeishi, Yoshinobu Kawahara
In anomaly detection, the degree of irregularity is often summarized as a real-valued anomaly score.
Semi-supervised Anomaly Detection Supervised Anomaly Detection
no code implementations • 8 Sep 2019 • Naoya Takeishi
We present a method to compute the Shapley values of reconstruction errors of principal component analysis (PCA), which is particularly useful in explaining the results of anomaly detection based on PCA.
1 code implementation • 13 May 2019 • Keisuke Fujii, Naoya Takeishi, Motokazu Hojo, Yuki Inaba, Yoshinobu Kawahara
A fundamental question addressed here pertains to the classification of collective motion network based on physically-interpretable dynamical properties.
no code implementations • 6 Feb 2019 • Naoya Takeishi, Yoshinobu Kawahara
Prior domain knowledge can greatly help to learn generative models.
no code implementations • 29 Jun 2018 • Naoya Takeishi, Kosuke Akimoto
Exploiting the appropriate inductive bias based on the knowledge of data is essential for achieving good performance in statistical machine learning.
no code implementations • ACL 2018 • Rem Hida, Naoya Takeishi, Takehisa Yairi, Koichi Hori
For extracting meaningful topics from texts, their structures should be considered properly.
no code implementations • NeurIPS 2017 • Naoya Takeishi, Yoshinobu Kawahara, Takehisa Yairi
Spectral decomposition of the Koopman operator is attracting attention as a tool for the analysis of nonlinear dynamical systems.