Knowledge

Yao graph

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is the angle of the sectors. The same idea can be extended to point sets in more than two dimensions, but the number of sectors required grows exponentially with the dimension.
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The basic idea underlying the two-dimensional Yao graph is to surround each of the given points by equally spaced
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Undirected graph with graph distances linearly bounded w.r.t. Euclidean distances
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in each of these sectors. Associated with a Yao graph is an integer parameter
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which is the number of rays and sectors described above; larger values of
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Cone-based Spanners in Computational Geometry Algorithms Library (CGAL)
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with the property that, for every pair of points in the graph, their
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produce closer approximations to the Euclidean distance. The
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has a length that is within a constant factor of their
148: 96: 258:(1982), "On constructing minimum spanning trees in 175: 154: 134: 299: 168:used these graphs to construct high-dimensional 135:{\displaystyle 1/(\cos \theta -\sin \theta )} 262:-dimensional space and related problems", 250: 248: 277: 22: 245: 219:"Overlay Networks for Wireless Systems" 300: 254: 13: 14: 324: 170:Euclidean minimum spanning trees 176:Software for drawing Yao graphs 228: 211: 129: 105: 1: 204: 7: 187: 10: 329: 265:SIAM Journal on Computing 155:{\displaystyle \theta } 313:Geometric graph theory 308:Computational geometry 156: 136: 32:computational geometry 27: 157: 137: 26: 146: 94: 50:connecting a set of 236:"Simple Topologies" 152: 132: 60:Euclidean distance 28: 44:geometric spanner 320: 292: 290: 281: 252: 243: 242: 240: 232: 226: 225: 223: 215: 161: 159: 158: 153: 141: 139: 138: 133: 104: 85: 79: 71:nearest neighbor 52:geometric points 48:undirected graph 328: 327: 323: 322: 321: 319: 318: 317: 298: 297: 296: 295: 288:10.1137/0211059 279:10.1.1.626.3161 253: 246: 238: 234: 233: 229: 221: 217: 216: 212: 207: 190: 178: 147: 144: 143: 100: 95: 92: 91: 81: 74: 42:, is a kind of 19: 12: 11: 5: 326: 316: 315: 310: 294: 293: 272:(4): 721–736, 244: 227: 209: 208: 206: 203: 202: 201: 199:Semi-Yao graph 196: 189: 186: 185: 184: 177: 174: 151: 131: 128: 125: 122: 119: 116: 113: 110: 107: 103: 99: 88:stretch factor 38:, named after 17: 9: 6: 4: 3: 2: 325: 314: 311: 309: 306: 305: 303: 289: 285: 280: 275: 271: 267: 266: 261: 257: 251: 249: 237: 231: 220: 214: 210: 200: 197: 195: 192: 191: 183: 180: 179: 173: 171: 167: 163: 149: 126: 123: 120: 117: 114: 111: 108: 101: 97: 89: 84: 77: 72: 68: 63: 61: 57: 56:shortest path 53: 49: 46:, a weighted 45: 41: 37: 33: 25: 21: 16: 269: 263: 259: 230: 213: 164: 82: 75: 64: 35: 29: 20: 15: 194:Theta graph 90:is at most 302:Categories 256:Yao, A. C. 205:References 166:Andrew Yao 40:Andrew Yao 274:CiteSeerX 150:θ 127:θ 124:⁡ 118:− 115:θ 112:⁡ 36:Yao graph 188:See also 142:, where 276:  34:, the 239:(PDF) 222:(PDF) 67:rays 284:doi 121:sin 109:cos 78:≥ 6 30:In 304:: 282:, 270:11 268:, 247:^ 172:. 62:. 291:. 286:: 260:k 241:. 224:. 130:) 106:( 102:/ 98:1 83:k 76:k

Index


computational geometry
Andrew Yao
geometric spanner
undirected graph
geometric points
shortest path
Euclidean distance
rays
nearest neighbor
stretch factor
Andrew Yao
Euclidean minimum spanning trees
Cone-based Spanners in Computational Geometry Algorithms Library (CGAL)
Theta graph
Semi-Yao graph
"Overlay Networks for Wireless Systems"
"Simple Topologies"


Yao, A. C.
SIAM Journal on Computing
CiteSeerX
10.1.1.626.3161
doi
10.1137/0211059
Categories
Computational geometry
Geometric graph theory

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