Hiroyuki Satō

Cost reduction effect on running costs in ISMS based on sensors

2015

The ICT environment has been rapidly developed by cloud computing and has become far more convenient to use. However, negative sides also exist, such as threats of viruses and unlawful access, meaning a safe and …

Privacy-preserving access control model for big data cloud

2015

Due to the proliferation of advanced analytic applications built on a massive scale of data from several data sources, big data technology has emerged to shift the paradigm of data management. Big data management is …

A modified cuckoo search algorithm for dynamic optimization problems

2016

This paper proposes a simple modification of the Cuckoo Search called CS for a dynamic environment. In this paper, we consider a dynamic optimization problem where the global optimum can be cyclically changed depending on …

Embedding lightweight proxy re-encryption for efficient attribute revocation in cloud computing

2016 · International Journal of High Performance Computing and Networking

Cloud computing has emerged as a successful paradigm to deliver flexible and convenient data processing and sharing. Security and privacy management of outsourced data is among the top concerns for cloud adoption. To this end, …

Automatic adjustment of selection pressure based on range of reward in learning classifier system

2017 · Proceedings of the Genetic and Evolutionary Computation Conference

XCS (Accuracy-based learning classifier system) can acquire accurate classifiers on the basis of consistent reward, but it does not always receive the consistent reward in real world problems even if it provides the same output …

Complementary Methods of IoT Reliability for Embedding IoT Devices into SDP

2021

With the progress of digital transformation, Software Defined Perimeter (SDP), a zero-trust model developed by the Cloud Security Alliance, is attracting attention. SDP has been considered as a zero-trust model against the increase of internal …