Search Results for author: Kohei Suenaga

Found 11 papers, 1 papers with code

Probabilistic Black-Box Checking via Active MDP Learning

no code implementations15 Jul 2023 Junya Shijubo, Masaki Waga, Kohei Suenaga

Our method, ProbBBC, refines the conventional BBC approach by (1) employing an active Markov Decision Process (MDP) learning method during the learning phase, (2) incorporating probabilistic model checking in the synthesis phase, and (3) applying statistical hypothesis testing in the validation phase.

BOREx: Bayesian-Optimization--Based Refinement of Saliency Map for Image- and Video-Classification Models

no code implementations31 Oct 2022 Atsushi Kikuchi, Kotaro Uchida, Masaki Waga, Kohei Suenaga

We propose a new black-box method BOREx (Bayesian Optimization for Refinement of visual model Explanation) to refine a heat map produced by any method.

Bayesian Optimization Classification +2

Formalizing Statistical Causality via Modal Logic

no code implementations30 Oct 2022 Yusuke Kawamoto, Tetsuya Sato, Kohei Suenaga

We propose a formal language for describing and explaining statistical causality.

Causal Inference

Sound and Relatively Complete Belief Hoare Logic for Statistical Hypothesis Testing Programs

no code implementations15 Aug 2022 Yusuke Kawamoto, Tetsuya Sato, Kohei Suenaga

We propose a new approach to formally describing the requirement for statistical inference and checking whether a program uses the statistical method appropriately.

HELMHOLTZ: A Verifier for Tezos Smart Contracts Based on Refinement Types

no code implementations30 Aug 2021 Yuki Nishida, Hiromasa Saito, Ran Chen, Akira Kawata, Jun Furuse, Kohei Suenaga, Atsushi Igarashi

Due to the large amount of money that smart contracts deal with, there is a surging demand for a method that can statically and formally verify them.

Vocal Bursts Type Prediction

Visualizing Color-wise Saliency of Black-Box Image Classification Models

no code implementations6 Oct 2020 Yuhki Hatakeyama, Hiroki Sakuma, Yoshinori Konishi, Kohei Suenaga

Several techniques have been proposed to address this problem; one of which is RISE, which explains a classification result by a heatmap, called a saliency map, which explains the significance of each pixel.

Classification General Classification +2

A Contract Corpus for Recognizing Rights and Obligations

no code implementations LREC 2020 Ruka Funaki, Yusuke Nagata, Kohei Suenaga, Shinsuke Mori

Therefore, a language-processing system that can present information concerning rights and obligations found within a given contract document would help a contracting party to make better decisions.

Automated proof synthesis for propositional logic with deep neural networks

1 code implementation30 May 2018 Taro Sekiyama, Kohei Suenaga

As an implementation of the estimator, we propose a proposition-to-proof architecture, which is a DNN tailored to the automated proof synthesis problem.

Automated Theorem Proving

Towards Proof Synthesis Guided by Neural Machine Translation for Intuitionistic Propositional Logic

no code implementations20 Jun 2017 Taro Sekiyama, Akifumi Imanishi, Kohei Suenaga

Inspired by the recent evolution of deep neural networks (DNNs) in machine learning, we explore their application to PL-related topics.

Machine Translation Negation +1

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