Takeshi Shibata

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This paper studies five real-world data intensive workflow applications in the fields of natural language processing, astronomy image analysis, and web data analysis. Data intensive workflows are increasingly becoming important applications for cluster and Grid environments. They open new challenges to various components of workflow execution environments(More)
Distributing large data to many nodes, known as a broadcast or a multicast, is an important operation in parallel and distributed computing. Most previous broadcast algorithms explicitly or implicitly try to deliver data to all nodes in the same rate. This assumption is reasonable for homogeneous environments where all nodes have similar receiving(More)
We describe InTrigger, a large-scale distributed computing environment. Our goal is to install over 1000 cores spread out across 20 to 30 sites, and we have already installed 514 cores spread out across 6 sites. We explain how we use technologies such as PXE boot and IPMI in order to manage such a multi-site distributed computing environment while making(More)
This paper studies five real-world data intensive workflow applications in the fields of natural language processing, astronomy image analysis, and web data analysis. Data intensive workflows are increasingly becoming important applications for cluster and Grid environments. They open new challenges to various components of workflow execution environments(More)
Past research has suggested that the use of a foreign language worsen decision making because of the heavier cognitive load imposed by a foreign language than by a native language (Takano & Noda, 1993). We discovered, however, that the foreign language usage can be beneficial to decision making under information overload (when it is based upon a large(More)
In Akita Prefecture located in the northeast region of Japan, many attractive folk dances have been passed down. However, several dances were lost due to the falling birthrate and depopulation of rural areas. This study proposes a method to obtain the information contributing to the restoration of the lost folk dances. Specifically, we estimate the motion(More)