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Akira Tajima
Researcher at Yahoo!
Publications - 68
Citations - 872
Akira Tajima is an academic researcher from Yahoo!. The author has contributed to research in topics: Lens (optics) & Zoom lens. The author has an hindex of 14, co-authored 68 publications receiving 711 citations. Previous affiliations of Akira Tajima include Canon Inc. & IBM.
Papers
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Proceedings ArticleDOI
Embedding-based News Recommendation for Millions of Users
TL;DR: An embedding-based method to use distributed representations in a three step end-to-end manner that performed well in an experimental offline evaluation using past access data on Yahoo! JAPAN's homepage and compared its online performance with a method that was conventionally incorporated into the system.
Proceedings ArticleDOI
CTR prediction for contextual advertising: learning-to-rank approach
TL;DR: This paper introduces a click-through rate prediction algorithm based on the learning-to-rank approach that is observed to achieve better results than other baselines in the authors' three metrics.
Patent
Image stabilizing optical system having a variable prism
Hiroshi Furukawa,Akira Tajima +1 more
TL;DR: In this article, an image stabilized system consisting of an afocal telescopic system, deflecting means and a relay lens system arranged in this order from the front is presented. But the system is not suitable for the use of a gyro stabilizer.
Patent
Network system, CPU resource provider, client apparatus, processing service providing method, and program
TL;DR: In this paper, a network system includes an application service provider (ASP) which is connected to the Internet and executes an application, and a CPU resource provider which provides a processing service to a particular computational part (e.g., computation intensive part) of the application.
Patent
Demand planning for configure-to-order and building blocks-based market environment
TL;DR: In this article, the authors propose a method for demand planning of products, which comprises the steps of constructing a configure-to-order operation/multiple building block environment; and, forecasting the demand of the building blocks within this environment for establishing an efficient supply chain management.