university of tsukuba

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Memory Management of Density-Based Spam Detector

The volume of mass unsolicited electronic mail, often known as spam, has recently increased enormously and has become a serious threat to not only the Internet but also to society. A new spam detection method which uses document space density information has been proposed. Although the proposed method requires extensive...

Tags: Memory Management, University Of Tsukuba, E-mail, Strategy, Online Communications, Management

White papers 2009-01-01

Intelligent Perceptual Information Parallel Processing System Controlled by Mathematical AIM Model

This paper studies an intelligent perceptual information processing system in which plural processing can run in parallel. The proposed mathematical Activation-Input-Modulation AIM model controls each execution frequency of plural processing independently based on degrees of stimuli detected by external sensors. When external stimuli are detected by some of external sensors,...

Tags: AOL Instant Messenger, Sensor, Parallel Processing, Information, University Of Tsukuba

White papers 2007-07-27

Response Time Analysis of a Multi-Server Processor Sharing Model

This paper investigates the response time of a multi-server Processor Sharing PS model. A multi-server PS model is a PS queue but the number of requests which can be processed simultaneously is limited by a threshold. An arriving request has to wait in the queue if the number of requests...

Tags: Threshold, Analysis, University Of Tsukuba, Processors, Semiconductors, Hardware, Components

White papers 2007-03-01

Incorporating "Level of Detail" Into Programming Languages Aimed at Real-Time Application

Interactive computer graphics, including video games, are now popular and widely adopted computer usage. However, detailed scene generation consumes lots of CPU power and thus might prohibit timely update of graphics views. To address the problem, some programs uses "Level Of Details" LODs to control the conciseness of scene being...

Tags: Programming Language, Programming, Computer, University Of Tsukuba, LOD, Programming Languages, Productivity, Development Tools, Software Development, Software/Web Development

White papers 2007-01-10

Experiences of Building Linux/RTOS Hybrid Operating Environments on Virtual Machine Monitors

This paper presents the experiences of building Linux/RTOS hybrid operating environments on Xen and Gandalf Virtual Machine Monitors VMMs. Xen is a popular open source VMM while Gandalf is their in-house virtual machine monitor that was designed and implemented from scratch to be a simple yet extremely lightweight VMM. They...

Tags: Environment, Xen, Virtual Machine, University Of Tsukuba, Desktop Virtualization

White papers 2006-05-01