2024/3/24	Mitsuho Takahashi, Kazuya Wakigami, and Qingyang Zhang have received master degrees of computer science. Ippo Hiroi graduated from the college of information science. Kazuya Wakigami has received the prize of degree program leader of computer science. Congratulations!
2024/1/23	The submission deadline for poster track of DSN2024 has been extended to January 31st. Please consider to submit your contributions!
2023/12/14	Ippo Hiroi, Nianqui Wang, and Linyun Gao had presentations at the Dependable System Workshop (DSW) 2023 in Japan.
2023/11/28	Dr. Jin Hong from The University of Western Australia visited our laboratory and gave a talk about Quantum Inspired Machine Learning for IDS.
2023/11/23	It is my pleasure to annouce that the 35th IEEE International Symposium on Software Reliability Engineering (ISSRE2024) will be hosted in Tsukuba, Japan, October 28th-31st, 2024. The web site is now opened.
2023/11/2	Mitsuho Takahashi had a presentation at the 36th REAJ Autumn Reliability Symposium in Japan.
2023/10/26	Kazuya Wakigami presented our paper in the 28th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2023). [slides] Our paper is selected as the Distinguished Paper Award on Dependable Computing. Congratulations!
2023/10/21	Fumio Machida's research paper "Using Diversities to Model the Reliability of Two-version Machine Learning Systems" has been accepted for publication in the IEEE Transactions on Emerging Topics in Computing. [link]
2023/10/11	Qiang Wen presented a paper at the research track in The 34th IEEE International Symposium on Software Reliability Engineering (ISSRE 2023). [slides]
2023/9/20	Kazuya Wakigami's paper "Reliability and Performance Evaluation of Two-input Machine Learning Systems" has been accepted for presentation at the 28th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2023). [paper]
2023/9/3	A joint research paper with Prof. Ermeson Andrade "Assuring Autonomy of UAVs in Mission-critical Scenarios by Performability Modeling and Analysis" has been accepted for publication in the ACM Transactions on Cyber-Physical Systems. [link]
2023/8/21	Our paper "Software Aging Analysis in a Testing Framework" has been accepted for presentation at WoSAR 2023. The paper is a joit work with Douglas Dias and Ermeson Andrade from Federal Rural University of Pernambuco.
2023/7/29	Qiang Wen's paper "Characterizing Reliability of Three-version Traffic Sign Classifier System through Diversity Metrics" has been accepted for presentation at The 34th IEEE International Symposium on Software Reliability Engineering (ISSRE 2023). [paper]
2023/6/30	Qiang Wen presented a short paper at the doctoral forum in DSN2023 and Julio Mendonsa from University of Luxembourg presented our joint research paper at DSML2023�D
2023/6/13	A joint research paper "Understanding NFV-Enabled Vehicle Platooning Application: A Dependability View" has been accepted for publication in the IEEE Transactions on Cloud Computing. [link]
2023/4/27	A research paper "Enhancing the Reliability of Perception Systems using N-version Programming and Rejuvenation" has been accepted for presentation at Dependable and Secure Machine Learning (DSML2023). The paper is joint work with Dr. Julio Mendonca and Dr. Marcus Volp in University of Luxembourg. [paper]
2023/4/7	Shamima Afrin, Zhengji Wang, Linyun Gao, and have joined our group as master students. Ippo Hiroi has joined our group as a bachelor student. Qing Wen starts the Ph.d program and Nianqiu Wang starts the master program.

2023/3/29	Kengo Watanabe presented our paper "Software Aging in Real-Time Object Detection Systems on Edge Servers" at The 38th ACM/SIGAPP Symposium On Applied Computing (SAC 2023).
2023/3/25	Our paper "Performability analysis of adaptive drone computation offloading with fog computing" has been accepted for publication in the Future Generation Computer Systems. [paper]
2023/3/24	Kengo Watanabe and Qiang Wen have received master degrees of computer science. Kengo Watanabe has received the prize of degree program leader of computer science. Congratulations!
2023/3/7	We had laboratory introduction at the open campus event. We will have an online laboratory introduction on 4/23.
2023/1/31	A joint research paper "Model-Driven Dependability Assessment of Microservice Chains in MEC-Enabled IoT" has been accepted for publication in the IEEE Transactions on Services Computing. [link]
2022/12/15	Kazuya Wakigami and Qingyang Zhang had presentations at the Dependable System Workshop (DSW) 2022 in Japan.
2022/12/14	Kengo Watanabe's paper "Software Aging in Real-Time Object Detection Systems on Edge Servers" has been accepted for presentation at The 38th ACM/SIGAPP Symposium On Applied Computing (SAC 2023). [paper]
2022/11/2	A joint research paper "An Empirical Study on Software Aging of Long-Running Object Detection Algorithms" has been accepted for presentation at The 22nd IEEE International Conference on Software Quality, Reliability, and Security (QRS 2022).
2022/10/3	A new research student, Nianqiu Wang, has joined our group.
2022/10/1	A joint research paper with Ermeson Andrade "Modeling and Analysis of Deforestation Prevention by Uncrewed Aerial Vehicles-based Monitoring Systems" has been accepted for publication in Environmental Modelling and Software. [link]
2022/9/27	We had a joint resaerch seminar with the Laboratory for System Software (OSSS).
2022/9/22	Dr. Ermeson Andrade gave a talk "Performability Analysis of Computer Systems" at a seminar of OR Society Japan Chugoku-Shikoku branch.
2022/9/13	Mitsuho Takahashi's paper "How Data Diversification Benefits the Reliability of Three-version Image Classification Systems" has been accepted for presentation at The 27th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2022).
2022/9/1	Dr. Ermeson Andrade from Federal Rural University of Pernambuco has joined our group as a visiting researcher.
2022/8/23	Qingyang Zhang's paper "Performance Bottleneck Analysis of Drone Computation Offloading to a Shared Fog Node" has been accepted for presentation at The 12th IEEE International Workshop on Software Certification (WoSoCer 2022).
2022/8/19	A joint research paper "Analysis of Software Aging in a Blockchain Platform" with Mr. Douglas Dias and Dr. Ermeson Andrade has been accepted for presentation at The 14th International Workshop on Software Aging and Rejuvenation (WoSAR 2022).
2022/6/26	Alexandre Sparton finished his internship period and presented his achievement at a joint workshop with Bordeaux University.
2022/6/2	Kengo Watanabe's paper "Availability Analysis of a Drone System with Proactive Offloading for Software Life-extension" has been accepted for presentation at IEEE Conference on Omni-layer INtelligent Systems (IEEE COINS 2022)[paper]
2022/5/31	Fumio Machida had a presentation at the spring symposium of Reliability Engineering Association of Japan.
2022/5/11	A joint research paper "Quantitative understanding serial-parallel hybrid SFC services: a dependability perspective" has been accepted for publication in the Peer-to-Peer Networking and Applications. [link]
2022/4/24	We had laboratory introduction sessions at the open campus event.
2022/4/11	Alexandre Sparton from Bordeaux University joined our group as an international internship student.
2022/4/7	Kazuya Wakigami has joined our group as a master student. Mitsuho Takahashi and Qingyang Zhang also starts their master courses in our group.
2022/4/3	Wen Qiang's paper "Reliability Models and Analysis for Triple-model with Triple-input Machine Learning Systems" has been accepted for presentation at IEEE Conference on Dependable and Secure Computing (DSC 2022). [paper][slides]

2022/3/27	We had laboratory introduction sessions for those who have interests on our lab. Next open campus will be held on April 24.
2022/3/25	Sixiang Wang and Xinzhi Liu have received master degrees of computer science. Mitsuho Takahashi graduated from the college of information science. Sixiang Wang has received the prize of degree program of computer science. Congratulations!
2022/2/16	A joint research paper "Impact of Service Function Aging on the Dependability for MEC Service Function Chain" has been accepted for publication in the IEEE Transactions on Dependable and Secure Computing. [link]
2021/12/24	A joint research paper "A Comparative Analysis of Software Aging in Image Classifiers on Cloud and Edge" has been accepted for publication in an upcoming issue of the IEEE Transactions on Dependable and Secure Computing.[link]
2021/12/17	Kengo Watanabe and Mitsuho Takahashi had presentations at the domestic workshop Dependable System Workshop (DSW) 2021.
2021/10/29	Dr. Fumio Machida has received the Distinguished Reviewer Award at the 32nd International Symposium on Software Reliability Engineering (ISSRE2021).
2021/10/1	A new research student, Qingyang Zhang, has joined our group.
2021/9/26	A joint paper "Performance Analysis of Machine Learning-Based Systems for Detecting Deforestation" with Prof. Ermeson Andrade has been accepted for presentation at Brazilian Symposium on Computing Systems Engineering (SBESEC). [paper]
2021/9/1	Our paper "Availability Modeling for Drone Image Processing Systems with Adaptive Offloading" has been accepted for presentation at 26th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC2021). [paper]
2021/8/20	Fumio Machida's co-authored paper "Memory Degradation Analysis in Private and Public Cloud Environments" has been accepted for presentation at 13th International Workshop on Software Aging and Rejuvenation (WoSAR2021). [paper]
2021/8/13	Xingzhi Liu's paper "Failure Threshold Setting for Wiener-process-based Remaining Useful Life Estimation" has been accepted for presentation at IEEE Global Reliability & Prognostics and Health Management Conference (PHM-2021).
2021/7/15	Sixiang Wang won the Best Student Paper Award in the presentation at 2021 IEEE World Forum on Internet of Things (WF-IoT). Congratulations!
2021/6/29	Adrien Le Corre finished his internship period and presented his achievement at a joint workshop with Bordeaux University.
2021/6/21	We presented a paper entitled "A Queueing Analysis of Multi-model Multi-input Machine Learning Systems" at Dependable and Secure Machine Learning 2021 (DSML). [paper]
2021/5/25	We created an introduction page for our focused research subject N-version machine learning system.
2021/5/10	Our presentation video at ICFEC2021 is now available on Youtube. Our paper is entitled "PA-offload: Performability-aware adaptive fog offloading for drone image processing". [video][paper]
2021/4/19	Adrien Le Corre from Bordeaux University joined our group as an international internship student.
2021/4/16	Sixiang Wang's paper "A Robustness Evaluation of Concept Drift Detectors Against Unreliable Data Streams" has been accepted for presentation at the 2021 IEEE World Forum on Internet of Things (WF-IoT). [paper]
2021/4/12	Our paper "A Queueing Analysis of Multi-model Multi-input Machine Learning Systems" co-authored with Yuta Makino and Dr. Phung-Duc Tuan has been accepted for presentation at Dependable and Secure Machine Learning 2021 (DSML). [paper]
2021/4/8	New master students, Kengo Watanabe and Wen Qiang, and a new bachelor student, Mitsuho Takahashi, have joined our group.

2021/3/28	We held sessions for introducing our research laboratory at the open campus for degree program in computer science. Next open campus is planed on 18th April.
2021/2/27	Our paper entitled "PA-offload: Performability-aware adaptive fog offloading for drone image processing" has been accepted for presentation at the IEEE International Conference on Fog and Edge Computing (ICFEC 2021). [paper]
2020/11/16	Our paper entitled "Analysis of optimal file placement for energy-efficient file-sharing cloud storage system" has been accepted for publication in an upcoming issue of the IEEE Transactions on Sustainable Computing. It was a result of joint research work with Dr. Kazuhiko Kato, Dr. Koji Hasebe and Dr. Hirotake Abe in University of Tsukuba. [paper]
2020/10/13	As a Fast Abstract Co-chairs of ISSRE2020, we organized three Fast Panel and Abstract sessions: - Session 1: The emergence of machine learning in software reliability engineering - Session 2: The future of automated software reliability engineering - Session 3: New innovative approaches for system assurance
2020/10/12	Prof. Ermeson Andrade presented our co-authored paper in WoSAR2020. [paper] The data set obtained in our experiments for software aging in image classification systems are available. [data]
2020/8/22	Two papers co-authored by Dr. Fumio Machida have been accepted by WoSAR2020. - F. Machida and P. Maciel, "Markov chains and Petri nets for software rejuvenation systems" - E. Andrade, F. Machida, R. Pietrantuono, D. Cotroneo, "Software aging in image classification systems on cloud and edge"
2020/7/20	The deadline of full research paper submission to PRDC2020 is now extended to August 1st. Please consider to submit your contributions. The conference is postoponed to the next year, but all the accepted papers will be published in the proceedings of this year.
2020/7/12	We held sessions for introducing our research laboratory at the open campus for degree program in computer science. We are accepting a few students who are considering to enroll in the degree program next year and join our group. Please don't hesitate to contact us!
2020/5/1	"Handbook of Software Aging and Rejuvenation" has been published by World Scientific Publishing. Dr. Fumio Machida and Prof. Paulo Maciel contributed to Chapter 5 Markov Chains and Petri Nets.
2020/4/16	New master students, Sixiang Wang and Xingzhi Liu, have joined our group.

2020/2/26	As a part of organizing committee for IEEE/IFIP International Conference on Dependable Systems and Networks (DSN2020) , we are currently open the calls for Fast Abstracts. Please consider to submit your contributions to the DSN Fast Abstracts and Posters track.
2020/1/15	A joint research work with Prof. Xiaolin Chang, "Analyzing software rejuvenation techniques in a virtualized system: service provider and user views" has been published in IEEE Access. [paper]
2019/12/6	Dr. Fumio Machida gave a presentation at the 17th dependable system workshop in Japan (DSW2019). His presentation title is "Reliability analysis of machine learning systems using N-version models". We would thank to the valueable comments from the audience.
2019/12/3	Dr. Fumio Machida presented his paper at the IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2019)[paper][slides] Thanks to the participants of one of the last sessions of the conference!
2019/10/19	Dr. Fumio Machida made a presentation about the reliability of machine learning system using diverse classifiers at a workshop of the Operations Research Society of Japan.
2019/9/16	Our paper entitled "On the diversity of machine learning models for system reliability" has been accepted for presentation at the IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2019).
2019/8/28	Fumio Machida's co-authored paper "Analysis of Software Aging Impacts on Plant Anomaly Detection with Edge Computing" with Ermeson C. Andrade in UFRPE has been accepted by International Workshop on Software Aging and Rejuvenation.
2019/6/24	Dr. Fumio Machida presented a workshop paper at Dependable and Secure Machine Learning 2019 (DSML) co-located with International Conference on Dependable Systems and Networks (DSN).[paper][slides]
2019/4/10	Our paper entitled "N-version machine learning models for safety critical systems" has been accepted for presentation at the international workshop on Dependable and Secure Machine Learning.
2019/4/8	Dr. Fumio Machida made a presentation at the Workshop on Education and Practice of Performance Engineering (WEPPE) co-located with International Conference on Performance Engineering (ICPE) 2019. [paper][slides]
2019/2/1	Dr. Fumio Machida launched the laboratory for system dependabiliy in computer science department at University of Tsukuba. The laboratory is open to enthusiastic students and research collaborators who have interests on system dependability.

Last update: 2024.5.3