Social Media in transportDave Marples, Technolution B.V.

What are Social Media?Social media are computer-mediated tools

that allow people to create, share or exchange information, ideas, and pictures/videos in

virtual communities and networks.

[It is] is defined as "a group of Internet-based applications that build on the ideological and

technological foundations of Web 2.0, and that allow the creation and exchange of user-

generated content.

Source: WikiPedia

Big Data Collection and Analysis LifeCycle

AcquisitionRecording

IntegrationAggregatio

nRepresenta

tion

ExtractionAnnotationCleaningStorage

Visualization

AnalysisModeling

InterpretationRe-

interpretation

Dissemination

Deletion

Source: OECD ITF, Big Data and Transport, 2015

HeterogeneityVolatility

ScaleVelocity,

timelinessTraceability,

privacy

Representativeness

Human Input

Interpretation

Value

InboundStimulus to Traffic Control (Sensor)

OutboundStimulus to Road User (Actuator)

Key Issues Data Inflows vs. Data Outflows; Sensors

or Actuators? Continuous availability of dataflows Quality, Reliability, Timeliness,

Specificity, Interpretability Susceptibility to Spoofing and other

malevolent behavior ‘Born Digital’ or ‘Born Analogue’?

Open questions How can we decide what social media data

inflows we can rely on, and to what degree? To what degree does the fact that Social Media

sources are electively published give us open rights to use them? (weknowyourhouse.com, pleaserobme.com etc).

How do we prevent spoof outflows from confusing users?

How can we prevent beneficial services encouraging inappropriate use of Social Media apps?