Dave Patterson

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In this paper, we propose an approach to modeling functional magnetic resonance imaging (fMRI) data that combines hierarchical polynomial models, Bayes estimation, and clustering. A cubic polynomial is used to fit the voxel time courses of event-related design experiments. The coefficients of the polynomials are estimated by Bayes estimation, in a two-level(More)
Modern methods for imaging the human brain, such as functional magnetic resonance imaging (fMRI) present a range of challenging statistical problems. In this paper, we first develop a large sample based test for between group comparisons and use it to determine the necessary sample size in order to obtain a target power via simulation under various(More)
Authenticated actions provides fine grained remote function execution in a distributed system that crosses organizational boundaries and includes mobile hosts. Two principals can mutually authenticate even if they are disconnected from the rest of the system. Authenticated actions provides an excellent infrastructure for developing secure system(More)
University: " when we start talking about parallelism and ease of use of truly …when we start talking about parallelism and ease of use of truly parallel computers, we're talking about a problem that's as hard as any that computer science has faced. … I would be panicked if I were in industry. " p y " A Conversation with Hennessy & Patterson, " ACM Queue(More)
In this article, we model functional magnetic resonance imaging (fMRI) data for event-related experiment data using a fourth degree spline to fit voxel specific blood oxygenation level-dependent (BOLD) responses. The data are preprocessed for removing long term temporal components such as drifts using wavelet approximations. The spatial dependence is(More)
iii ACKNOWLEDGEMENTS The chemical analysis of water samples is a labor-intensive process. The total phosphorus and chlorophyll a results in this report would not have been possible were it not for the capable help and skills of many SPEA graduate research assistants who conducted the analyses. Julia Bond provided GIS graphics assistance as well as much(More)
ii iii Acknowledgements The chemical analysis of water samples is a labor-intensive process. The total phosphorus and chlorophyll a results in this report would not have been possible were it not for the capable help and skills of many SPEA graduate research assistants who conducted the analyses. Keeping the Volunteer Program running smoothly would be(More)
Conventional architectures have been developed with a transistor budget of a few hundred thousand and have evolved to designs of about 10 million transistors, achieving impressive performance. However, we believe that these architectures will not scale eeciently another hundredfold to utilize billion-transistor chips eeectively. In this paper we introduce(More)