Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Social Sensing

No description
by

Maurizio Tesconi

on 2 October 2015

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Social Sensing

Maurizio Tesconi
26 settembre 2013
500 million
active users
340 million tweet per day
1.6 billion queries per day
125 countries
33 different languages
2001
2010
2006
SOCIAL MEDIA TIMELINE
2003
2004
2011
2005
2009
2002
2008
2007
oltre 150.000 tweet georeferenziati (giugno 2012 - aprile 2013) contenenti parole offensive
1.1 billion of active users
150 billion of FB friend connection
50 million of FB pages
4.5 billion daily FB likes
213 countries
70 languages

1 billion unique users each month
100 hours of video uploaded every minute
56 countries
61 languages
http://www.youtube.com/yt/press/statistics.html
http://www.statisticbrain.com/twitter-statistics/
\
http://expandedramblings.com/index.php/by-the-numbers-17-amazing-facebook-stats/
Big Data
Social Sensor
le persone come “sensori sociali”
analizzare ciò che scrivono sui più diffusi
social media al fine di rilevare eventi che destano particolare allarme sociale

http://www.emergency-response-planning.com/news/bid/38241/INFOGRAPHIC-Disasters-in-the-Social-Media-Age
Twitter è più istantaneo degli altri SN e rappresenta quindi una fotografia più aggiornata di quello che sta accadendo.
BoxPlot - distribuzione di un campione di 10.000 posts e tweets
statistica Bayesiana, Peak-Detection, Corrected Conditional Entropy, Change-Detection, Burst-Detection.

The Preliminary Damage Assessment (PDA) process is a mechanism used to determine the impact and magnitude of damage and resulting needs of individuals, businesses, public sector, and community as a whole

Terremoto Ancona
21 luglio 2013
M 4.9
21,000 tweets georiferiti su 1.5 ML raccolti (1.4%)
circa il 60% degli account ha la location compilata, ma spesso è errata

un’applicazione web basata su Twitter per il monitoraggio di eventi sismici in Italia
Social Sensing
Domande
Full transcript