'Nn search' diaporamas de présentation

Computational Geometry

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Computational Geometry

793 views • 79 slides

Computational Geometry

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Computational Geometry

765 views • 76 slides

Computational Geometry

764 views • 76 slides

Spatial Queries

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Spatial Indexing for NN retrieval

Spatial Indexing for NN retrieval. R-tree. R-trees. A multi-way external memory tree Index nodes and data (leaf) nodes All leaf nodes appear on the same level Every node contains between m and M entries The root node has at least 2 entries (children)

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A Hardware Processing Unit For Point Sets

A Hardware Processing Unit For Point Sets. S. Heinzle, G. Guennebaud, M. Botsch, M. Gross Graphics Hardware 2008. Motivation. Point-based graphics established Powerful algorithms Representation Processing Manipulation Rendering Decomposition Get neighborhood Operate on neighbors.

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Nearest Neighbor POINT LOCATION Using KDTree on GPU

By Shawn Brown. Nearest Neighbor POINT LOCATION Using KDTree on GPU. Terrain Visualization: Want to compare results of 2 different surface generation methods against baseline for error Baseline (C) contains ~100 million terrain points Method A & B each generate ~100 million points

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Spatial Queries

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557 views • 31 slides

Superseding Nearest Neighbor Search on Uncertain Spatial Databases

Superseding Nearest Neighbor Search on Uncertain Spatial Databases. ???. Abstract ?. ??????????????? superseding nearest neighbor search .

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Fast Nearest Neighbor Search on Road Networks

Fast Nearest Neighbor Search on Road Networks. Haibo Hu, Dik Lun Lee, and Jianliang Xu Hong Kong Univ. of Science & Technology Hong Kong Baptist University. About Myself. Sagar Uplanchiwar MS Computer Science Graduating Dec 2008. Presentation Outline. Problem Existing Solutions

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Nearest Neighbor Queries using R-trees

Nearest Neighbor Queries using R-trees. Based on notes from NTUA. Nearest Neighbor Search. Find the object nearest to a query point q E.g., find the gas station nearest to the red point. k nearest neighbors : Find the k objects nearest to q

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Nearest Neighbor Queries using R-trees

Nearest Neighbor Queries using R-trees. Based on notes from G. Kollios. Nearest Neighbor Search. Find the object nearest to a query point q E.g., find the gas station nearest to the red point. k nearest neighbors : Find the k objects nearest to q

479 views • 23 slides

Fast PNN-based Clustering Using K -nearest Neighbor Graph

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New Algorithms for Efficient High-Dimensional Nonparametric Classification

New Algorithms for Efficient High-Dimensional Nonparametric Classification. Ting Liu, Andrew W. Moore, and Alexander Gray. Overview. Introduction k Nearest Neighbors ( k -NN) KNS1: conventional k -NN search New algorithms for k -NN classification KNS2: for skewed-class data

260 views • 14 slides