منابع مشابه
Improving IPC by Kernel
Inter-process communication (ipc) has to be fast and eeective, otherwise programmers will not use remote procedure calls (RPC), multithreading and multitasking adequately. Thus ipc performance is vital for modern operating systems, especially-kernel based ones. Surprisingly , most-kernels exhibit poor ipc performance, typically requiring 100 s for a short message transfer on a modern processor,...
متن کاملUser Level IPC and Device Management in the Raven Kernel
The increasing bandwidth of networks and storage devices in recent years has placed greater emphasis on the performance of low level operating system services. Data must be delivered between hardware devices and user applications in an eecient matter. Motivated by the need for low overhead operating system services, the Raven kernel utilizes user level implementation techniques to reduce kernel...
متن کاملA Context-Aware Kernel IPC Firewall for Android
Our phones go wherever we go. Ever present, and with ever more data and connections, smartphones hold as much sensitive data as traditional systems but do not have the same protections. Android’s recent 6.0 (Marshmallow) release introduced much needed dynamic permission checks for applications. However, this does not go far enough in adapting to mobile phone’s unique security needs. Smartphones...
متن کاملImproving eigenspace-based MLLR adaptation by kernel PCA
Eigenspace-based MLLR (EMLLR) adaptation has been shown effective for fast speaker adaptation. It applies the basic idea of eigenvoice adaptation, and derives a small set of eigenmatrices using principal component analysis (PCA). The MLLR adaptation transformation of a new speaker is then a linear combination of the eigenmatrices. In this paper, we investigate the use of kernel PCA to find the ...
متن کاملImproving SVM by Modifying Kernel Functions for Speaker Identification Task
Support vector machine (SVM) was the first proposed kernel-based method. It uses a kernel function to transform data from input space into a high-dimensional feature space in which it searches for a separating hyperplane. SVM aims to maximise the generalisation ability that depends on the empirical risk and the complexity of the machine. SVM has been widely adopted in real-world applications in...
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ژورنال
عنوان ژورنال: ACM SIGOPS Operating Systems Review
سال: 1993
ISSN: 0163-5980
DOI: 10.1145/173668.168633