little data, big data fall conference... · mail - david ory - outlook x files - onedrive x 2015 11...
TRANSCRIPT
Little Data, Big Data
Presentation to California Transit Association’s Fall Conference & ExpoDavid [email protected]
32
13
Little Data
4
Pencil & Paper
5
6
InexpensiveResponse rate: LowData quality: Low
7
Phone Number + CATI
8
9
ExpensiveResponse rate: lowData quality: very high
10
Personal Interview
11
ExpensiveResponse rate: highData quality: high
12
13
214
Big Data
15
Image source: SF Examiner16
Track One: Program Operators
17
18
0
100
200
300
400
500
600
700
3:00
AM
5:00
AM
7:00
AM
9:00
AM
11:0
0 A
M
1:00
PM
3:00
PM
5:00
PM
7:00
PM
9:00
PM
11:0
0 PM
1:00
AM
Clip
per®
tra
nsac
tion
rate
(mea
n ta
gs p
er m
inut
e)
Transaction time
Adult
Youth
RTC
Senior
19
$-
$300,000
$600,000
$900,000
$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
Traveldate
Other
SFMTA
BART
Track Two: Everyone
20
Privacy, privacy, privacyInterest worth the effort?
21
Anonymizing scheme7 million observations per monthTransactions for 18 months
22
Informing Planning Models
23
24
25
26
327
28
<fin>
29