Little Data, Big Data Fall Conference... · Mail - David ory - Outlook X Files - OneDrive X 2015 11...
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Little Data, Big Data Presentation to California Transit Association’s Fall Conference & Expo David Ory [email protected]
Transcript of Little Data, Big Data Fall Conference... · Mail - David ory - Outlook X Files - OneDrive X 2015 11...
Little Data, Big Data
Presentation to California Transit Association’s Fall Conference & ExpoDavid [email protected]
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Little Data
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Pencil & Paper
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InexpensiveResponse rate: LowData quality: Low
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Phone Number + CATI
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ExpensiveResponse rate: lowData quality: very high
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Personal Interview
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ExpensiveResponse rate: highData quality: high
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Big Data
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Image source: SF Examiner16
Track One: Program Operators
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$300,000
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$1,200,000
7/1/2015
7/4/2015
7/7/2015
7/10/2015
7/13/2015
7/16/2015
7/19/2015
7/22/2015
7/25/2015
7/28/2015
7/31/2015
e-Cashfa
repaymentrevenue
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BART
Track Two: Everyone
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Privacy, privacy, privacyInterest worth the effort?
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Anonymizing scheme7 million observations per monthTransactions for 18 months
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Informing Planning Models
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<fin>
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