EVALUATION OF PERFORMANCE OF RANDOM GENERATORS EMPLOYING CHAINCODES
A 'CHAINCODE' IS A SEQUENCE OF 2 TO THE NTH POWER OR FEWER BINARY DIGITS ARRANGED SO THAT THE PATTERN OF ANY N DIGITS LOCATES THE POSITION OF THESE DIGITS UNIQUELY. THE OBJECTIVE IS TO CONTRAST RANDOM GENERATORS EMPLOYING CHAINCODE PROPERTIES BUILT BY REDSHAW AND ROBINSON WITH SIMPLER GENERATORS DEVISED BY THE AUTHOR. BOTH TYPES OF RANDOM GENERATOR WERE DESIGNED FOR THE SIMULATION OF RANDOM ARRIVALS OF VEHICLES AT ROAD-TRAFFIC INTERSECTIONS. TEST PROCEDURES ON EACH SET OF GENERATORS INCLUDED STATISTICAL TESTS FOR RANDOMNESS, CHI-SQUARED TESTING OF ACTUAL VERSUS THEORETICAL ARRIVALS, TIME-BASED RATE OF ARRIVAL TEST, AUTO-CORRELATION AND CROSS-CORRELATION, BUNCHING AND GAP TESTS, AND A GRAPHIC TEST FOR LOCAL CORRELATION. THE TESTS PERFORMED INDICATED THAT EACH SET OF GENERATORS SATISFIED CRITERIA FOR RANDOMNESS, PROVIDED THAT CARE WAS EXERCISED AT THE DESIGN STAGE. FURTHERMORE, THE OUTPUT OF THE AUTHOR'S SIMPLER GENERATORS OF ORDER SEVEN AND FOUR SATISFIED THE TESTS ALMOST AS WELL AS THE TWO LARGER SETS WITH CHAINCODES OF ORDER 15 AND 11. /AUTHOR/
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Supplemental Notes:
- Vol 116, pp 27-34
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Authors:
- Hartley, M G
- Publication Date: 0
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Intersections; Motor vehicles; Randomization; Statistical analysis; Traffic simulation; Trip generation
- Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00227266
- Record Type: Publication
- Source Agency: Traffic Systems Reviews & Abstracts
- Files: TRIS
- Created Date: Jul 27 1970 12:00AM