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Showing 1 to 8 of 8 for “"vector computation"”.
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Building an Allocentric Traveling-Direction Signal Via Vector Computation
… tasks require the manipulation of mathematical vectors, but, outside of computational models, it is not known how brains perform vector operations. Here we show how the Drosophila central complex, a region implicated in goal-directed navigation, performs vector arithmetic. First, we describe a …
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Faster Fiedler vector computation for Laplacians of well-shaped meshes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Algorithms and Low Cost Architectures for Trace Buffer-Based Silicon Debug
… transformation functions, namely difference vector computation, efficient ordering of trace flip-flops and alternate vector reversal that reduces the entropy of the trace data, making them more amenable for compression. The order of the trace flip-flops is computed off-chip using a …
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Optimizing Vector Instruction Selection for Digital Signal Processing
… benefit from fast implementations of vectorized inner kernels. Existing compilers rely on brittle pattern-matching or search-based methods with poor scalability for vector instruction selection – techniques which are limited by a reliance on the syntax of the input code. These …
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A procedure for the computation of sea surface advection velocities from satellite thermal band imagery, with applications to the South East Atlantic Ocean
… with a view to developing a procedure for the computation of sea surface advection velocities from pairs of NOAA AVHRR infrared images. The procedure was designed for application to the oceanic regions around South Africa and cognisance had to be taken of restrictions imposed by the specific …
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Raconteur : intelligent assistance for conversational storytelling with media libraries
… and determine narration similarity using concept vector computation that goes beyond keyword matching or word co-occurrence based techniques. Furthermore, by identifying larger scale story patterns such as problem and resolution or expectation violation, it assists users in continuing the chatted …
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Isotropy criteria and algorithms for data clustering
… our second approach, we adopt the idea of shift vector computation for cluster detection. We present a novel scale-adaptive approach where clusters are detected by moving all points to their cluster cores using shift vectors. We use the isotropic density neighborhoods of a point to determine …
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Sign-Inverting Vectors Underlie a Coordinate Transformation in the Drosophila Central Brain
… called PFNa, can be thought of as a set of vectors whose summed activity yields the direction of wind in an allocentric reference frame — that is, relative to external landmarks like the sun, as opposed to relative to the animal's head. We also discovered that PFNa neurons alternate …