研究者業績
基本情報
研究キーワード
2研究分野
1経歴
6-
2013年4月 - 現在
-
2007年4月 - 2013年3月
-
2004年4月 - 2007年3月
-
2002年4月 - 2004年3月
-
2000年10月 - 2002年3月
委員歴
3-
- 現在
-
2020年4月 - 2024年3月
論文
230-
Proc. of the 29th International Symposium on Artificial Life and Robotics 2024 (AROB 29th 2024) 662-666 2024年1月 査読有り
-
Proceedings of 2023 11th International Symposium on Computing and Networking Workshops (CANDARW) 114-120 2023年11月 査読有り
-
Journal of Advanced Computational Intelligence and Intelligent Informatics 27(4) 537-542 2023年7月20日 査読有りIn this study, we investigate model structures for neural ODEs to improve the data efficiency in learning the dynamics of control systems. We introduce two model structures and compare them with a typical baseline structure. The first structure considers the relationship between the coordinates and velocities of the control system, while the second structure adds linearity with respect to the control term to the first structure. Both of these structures can be easily implemented without requiring additional computation. In numerical experiments, we evaluate these structure on simulated simple pendulum and CartPole systems and show that incorporating these characteristics into the model structure leads to accurate learning with a smaller amount of training data compared to the baseline structure.
-
2023 IEEE 53rd International Symposium on Multiple-Valued Logic (ISMVL) 2023年5月 査読有り
-
International Journal of Smart Computing and Artificial Intelligence 7(1) 1-1 2023年 査読有り最終著者
MISC
38-
第83回全国大会講演論文集 2021(1) 385-386 2021年3月4日日々，膨大な数のニュースが報道されているが，それらの中には経済的に大きな影響のある出来事に関するものも含まれている．本研究では，ニュース記事と株価指数を用いて，出来事の経済的な影響力を推定する手法を提案する．影響力は，株価指数の変動を過去の株価指数の変化のみから予測した結果とニュース記事に基づく素性を併用して予測した結果の差に基づいて推定し，差が大きいほど影響力が大きいとみなす．
-
情報処理学会研究報告(Web) 2019(DBS-169) Vol.2019‐DBS‐169,No.4,1‐6 (WEB ONLY) 2019年9月3日
-
情報処理学会研究報告(Web) 2019(DBS-169) Vol.2019‐DBS‐169,No.8,1‐6 (WEB ONLY) 2019年9月3日
-
情報処理学会研究報告(Web) 2019(DBS-169) Vol.2019‐DBS‐169,No.19,1‐6 (WEB ONLY) 2019年9月3日
-
情報処理学会研究報告(Web) 2015(DBS-162) VOL.2015-DBS-162,NO.14 (WEB ONLY) 2015年11月19日
-
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 114(103) 33-36 2014年6月24日Outcome of total hip arthroplasty (THA) is strongly correlated to the orientation of the acetabular cup. This paper proposes an assessment method of the acetabular cup using multidetector-row computed tomography (MDCT) images. The method measures angles between the cup implanting axis and the pelvic anatomical coordinate axis. The method was applied to phantoms. We acquired multiple set of MDCT image to evaluate the reliability. The standard deviations of measured angles in multiple acquisitions were 1.27 deg for the inclination angle and 1.83 deg for the anteversion angle.
-
インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence 16 369-372 2006年9月
-
バイオメディカル・ファジィ・システム学会大会講演論文集 12 49-52 1999年In this paper, we propose a method to segment the menisci region from Tl-weighted and T2-weighted MR images. These images are taken continuously by the same system, so we can easily registrate them by manual. Our method is composed of two steps. First, we segment the candidate region of the menisci on the basis of the position of the cartilage from T2 weighted image. Second, we segment the meniscus voxels from the candidate based on fuzzy rules from Tl-weighted and T2-weighted images. Our method can successfully segment the menisci region from MR data sets. The generated visualizations will help medical doctor to diagnose the menisci with noninvasive.
-
バイオメディカル・ファジィ・システム学会大会講演論文集 11 21-24 1998年This paper shows an application of fuzzy information granulation to medical image segmentation for MR angiography image. The method treats medical image as information, and the granules are the anatomical parts such as blood vessel, fat, etc. Our granulation method consists of two stages : (1) Quantum generation and (2) Integration of them to produce granules. Quantum generation is performed with watershed segmentation. Integration process is achievedby estimating the degree for predefined models. By granulating MR angiography image, we obtain the bloodvessel region. In the experimental results, we show the target M IP and shaded surface display images of the segmented region. They are useful for evaluating the lesions such as the areury.
-
バイオメディカル・ファジィ・システム学会大会講演論文集 11 25-26 1998年This paper shows a method to segment the menisci regions from MR image by using fuzzy inference. The method is composed of two steps. First, we segment the cartiladge region by thresholding of the intensity. We extract the candidate region of the menisci as the region between the cartilages. Second, we segment the menisci voxels from the candidate region based on fuzzy if-then rules obtained from knowledge of location and intensity. Our method can successfully segment the menisci region from MR data sets. The generated visualizations will help medical doctor to diagnose the menisci with noninvasive.
-
Proc. of World Multiconference on Systemics, Cybernetics and Informatics 3 178-184 1997年
-
バイオメディカル・ファジィ・システム学会大会講演論文集 10 67-68 1997年This paper proposes an approach of fuzzy logic to 3D foot CT image segmentation. We show a fuzzy knowledge representation method to represent the knowledge needed to segment the foot bone into their ossa. In it we consider boundary surface knowledge, intensity knowledge and adjacency knowledge. They are expressed by fuzzy if-then rules and compiled to a total degree as the measure of segmentation. The degree is evaluated in region growing technique and which segments the foot bone. The experimental result shows that our method extract the ossa precisely.
-
バイオメディカル・ファジィ・システム学会大会講演論文集 10 69-70 1997年In this paper, we show a medical image segmentation for MR angiography images. In it, we introduce a cluster analysis technique aided by fuzzy logic. Our method classifies the clusters into the blood vessels and the others by comparing the intensity histogram with predefined models. In the experimental results, we show the target MIP and volume rendering images of the segmented region. They are useful for evaluating the lesions such as the areury.
-
インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence 6 263-264 1996年10月
-
インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence 6 265-266 1996年10月
-
IEICE transactions on information and systems 77(8) 877-884 1994年8月25日This paper proposes a repairable and diagnosable k-valued cellular array. We assume a single fault, i.e., either stuck-at-0 fault or stuck-at-(k-1) fault of switches occurs in the array. By building in a duplicate column iteratively, when a stuck-at-(k-1) fault occurs in the array, the fault never influences the output of the array. That is, we can construct a fault-tolerant array for the stuck-at-(k-1) fault. While, for the stuck-at-0 fault, the diagnosing method is simple and easy because we don't have to diagnose the stuck-at-(k-1) fault. Moreover, our array can be repaired easily for the fault. The comparison with other rectangular arrays shows that our array has advantages for the number of cells and the cost of the fault diagnosis.
講演・口頭発表等
21共同研究・競争的資金等の研究課題
12-
日本学術振興会 科学研究費助成事業 2023年6月 - 2026年3月
-
日本学術振興会 科学研究費助成事業 基盤研究(C) 2021年4月 - 2024年3月
-
厚生労働省 厚生労働科学研究費補助金臨床研究等ICT 基盤構築・人工知能実装 研究事業 2020年4月 - 2023年3月
-
厚生労働省 厚生労働科学研究費補助金（臨床研究等ICT基盤構築・人工知能実装研究研究事業） 2020年4月 - 2023年3月
-
日本学術振興会 科学研究費助成事業 基盤研究(C) 2016年4月 - 2019年3月