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Dynamics of Media Attention

Vincent Traag
Vincent Traag
Vincent TraagResearcher at CWTS

Presentation at ICCSA14, Le Havre, June 24, 2014

Dynamics of Media Attention

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Dynamics of Media Attention
V.A. Traag, R. Reinanda, J. Hicks, G. Van Klinken
KITLV, Leiden, the Netherlands
e-Humanities, KNAW, Amsterdam, the Netherlands
June 24, 2014
eRoyal Netherlands Academy of Arts and Sciences
Humanities
Background
Research focus
• Study elite (network) behaviour.
• Particular focus on regime changes.
Case I: Indonesia, fall of Suharto 1998.
Case II: Indonesian independence after WWII.
• Data: newspaper articles. How can we use them?
Data
• Current corpus: Joyo/Indonesian News Service, 2004–2012.
• Contains about 140 263 articles.
Network
Building the network
1 Detect names automatically .
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
2 Disambiguate names.
Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . .
3 Co-occurrence in sentence (record date).
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
K
B Y
19-04-2004
19-04-2004
19-04-2004
Network
Building the network
1 Detect names automatically .
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
2 Disambiguate names.
Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . .
3 Co-occurrence in sentence (record date).
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
K
B Y
19-04-2004
19-04-2004
19-04-2004
Network
Building the network
1 Detect names automatically .
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
2 Disambiguate names.
Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . .
3 Co-occurrence in sentence (record date).
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
K
B Y
19-04-2004
19-04-2004
19-04-2004
Network
Building the network
1 Detect names automatically .
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
2 Disambiguate names.
Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . .
3 Co-occurrence in sentence (record date).
“ Budhisantoso would ask Kalla to team up with Yudhoyono .”
K
B Y
19-04-2004
19-04-2004
19-04-2004

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Dynamics of Media Attention

  • 1. Dynamics of Media Attention V.A. Traag, R. Reinanda, J. Hicks, G. Van Klinken KITLV, Leiden, the Netherlands e-Humanities, KNAW, Amsterdam, the Netherlands June 24, 2014 eRoyal Netherlands Academy of Arts and Sciences Humanities
  • 2. Background Research focus • Study elite (network) behaviour. • Particular focus on regime changes. Case I: Indonesia, fall of Suharto 1998. Case II: Indonesian independence after WWII. • Data: newspaper articles. How can we use them? Data • Current corpus: Joyo/Indonesian News Service, 2004–2012. • Contains about 140 263 articles.
  • 3. Network Building the network 1 Detect names automatically . “ Budhisantoso would ask Kalla to team up with Yudhoyono .” 2 Disambiguate names. Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . . 3 Co-occurrence in sentence (record date). “ Budhisantoso would ask Kalla to team up with Yudhoyono .” K B Y 19-04-2004 19-04-2004 19-04-2004
  • 4. Network Building the network 1 Detect names automatically . “ Budhisantoso would ask Kalla to team up with Yudhoyono .” 2 Disambiguate names. Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . . 3 Co-occurrence in sentence (record date). “ Budhisantoso would ask Kalla to team up with Yudhoyono .” K B Y 19-04-2004 19-04-2004 19-04-2004
  • 5. Network Building the network 1 Detect names automatically . “ Budhisantoso would ask Kalla to team up with Yudhoyono .” 2 Disambiguate names. Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . . 3 Co-occurrence in sentence (record date). “ Budhisantoso would ask Kalla to team up with Yudhoyono .” K B Y 19-04-2004 19-04-2004 19-04-2004
  • 6. Network Building the network 1 Detect names automatically . “ Budhisantoso would ask Kalla to team up with Yudhoyono .” 2 Disambiguate names. Susilo Bambang Yudhoyono or Dr. Yudhoyono , etc. . . 3 Co-occurrence in sentence (record date). “ Budhisantoso would ask Kalla to team up with Yudhoyono .” K B Y 19-04-2004 19-04-2004 19-04-2004
  • 7. Media dynamics Dynamical characteristics • How does attention grow, decay? • How long do people stay in the news? • How often do new people enter the news? • Are there bursty patterns of attention? Comparison • Look at particular events. • Are dynamics any different? • Does attention grow or decay more quickly? • Do people drop from the news sooner than expected?
  • 8. Media dynamics Dynamical characteristics • How does attention grow, decay? • How long do people stay in the news? • How often do new people enter the news? • Are there bursty patterns of attention? Comparison • Look at particular events. • Are dynamics any different? • Does attention grow or decay more quickly? • Do people drop from the news sooner than expected?
  • 9. Weekly cycles 2004 2005 2006 2007 2008 2009 2010 2011 2012 Date 0 50 100 150 200 250 300 Frequency 0 5 10 15 20 25 30 35 40 Lag (days) 0.0 0.2 0.4 0.6 0.8 1.0 Autocorrelation 0.0 0.1 0.2 0.3 0.4 0.5 Frequency (days−1 ) 0 10000 20000 30000 40000 50000 Magnitude Neighbours’ timeseries correlate: underlying commonality.
  • 10. Growth/decay attention -104 -103 -102 -101 0 101 102 103 104 Time relative to peak (days) 10-5 10-4 10-3 10-2 10-1 Attention α−βlog|t| α|t|−β αe−β|t| αe−β|t| |t|−γ Best fit e−βtt−γ.
  • 11. Inter-event time 0 500 1000 1500 2000 2500 3000 Inter-event time (Days) 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 Probability Edges Nodes Powerlaw with exponential cut-off x−βe−γx .
  • 12. Lifetime 0 500 1000 1500 2000 2500 3000 Lifetime (days) 10-3 10-2 10-1 100 Probability Edges Nodes Very long lifetime for nodes.
  • 13. New nodes 1500 1000 500 0 500 1000 1500 2000 2500 3000 First Time Delay (days) 0.00 0.01 0.02 0.03 0.04 0.05 0.06Probability Edges Nodes New nodes (and edges) continuously appear in the media.
  • 14. Conclusion Timescales Measure Short time Long time Peak growth/decay power law Poisson Inter-event power law Poisson Lifetime fast (very) slow New nodes/edges appear continuously Theory • Issues arise at a constant rate (Poisson process) • Within issues, faster dynamics, shorter lifetimes