session 13 svante berg
TRANSCRIPT
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Trafikteknisk Data Mining
Ramböll AB, Svante Berg
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Vad är Data Mining?
• Informationsutvinning – ”förädla data”
• Inget nytt…..
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Utvärdering ATK (Fredrik Bergdahl)
• ”Vid planeringen av detta examensarbete hade jag tänkt bygga upp matematiska modeller och göra tester för att dra slutsatser om effekten av ATK. Då detta visade sig vara mindre meningsfullt p.g.a. den stora mängden data blev jag tvungen att tänka om.”
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Det ”nya”…..
•Indata
•Databaser
•Datakraft
•Verktyg
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Indata
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Databaser
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Datakraft
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Verktyg
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Indata + Databaser + Datakraft + Verktyg = Data Mining
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Exempel Ölandsbron (VV 2009:126)
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Variabel Hastighet - Simulering
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Nya Grundvärden Fordon (GRUFF) - Trafikregistret
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Datakällor i branschen……….
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• Överflöd?
● NVDB, STRADA, GIS, ÅDT, VViS, ITS-system, Fordonssidan, m.m
•Men…
● Licensfrågor?
● Ägaransvar?
● Vemsomhelst?
● ………..
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Omvärlden?
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Risker
Allt är inte guld som glimmar
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Modeller för att förstå
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ÅDTNCLkN CMfAcc
ββ 21
,××=
−
NCLkN CSCCAcc
β1
,×=
ÅDTNFkN FMfAcc
ββ 21100,××=
−
ÅDTNFkN FMfAcc
ββ 21100,××=
−
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Potensmodellen (Göran Nilsson, VTI)
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Metodik
Urval – Datainsamling – Bortfall – Databearbetning – Validering - Analys
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Sammanfattning
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• Data explosion
• Dator Verktyg
• Internet
• ”Open Data” – Fri Data
• Initiativ?
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TACK!
Ramböll AB, Svante Berg