big data meets journalism: automatic news detection · big data meets journalism: automatic news...
TRANSCRIPT
Sandjai Bhulai ([email protected])
Challenge #1
• How do you get (all) Dutch tweets?
• Twitter has a streaming API• Fair use policy delivers random 1% of the Twitter
stream• Following keywords is allowed
• How much data do you need?• How much data can you get?• How much data can you deal with?• How much data can you store?
Sandjai Bhulai ([email protected])
Challenge #2
• How do you detect trend on Twitter?
• Absolute frequencies of tweets• Relative frequencies of tweets• Speed of tweets• Acceleration of tweets• Seasonal patterns
• We need a real-time algorithm• We need to efficiently handle memory
Sandjai Bhulai ([email protected])
Trending topics
1. #PrayforMexico2. #SocialMovies3. #temblor4. Sismo de 7.85. Earthquake in Mexico6. John Elway7. Pat Bowlen8. Marcelo Lagos9. Azcapotzalco10.Niñas de 13 y 14
20 maart 2012, Twitter.com
Sandjai Bhulai ([email protected])
Challenge #3
• How do you deal with the following tweets?
• “Brand in Amsterdam”• “Vuur in 020”• “Fikkie in A’dam”
• “Ik heb brand gezien”• “Ik zag brand”• “Ik zie brand”
Sandjai Bhulai ([email protected])
Live demo (prototype)
• Prototype: live twitter stream!
• Full Dutch twitter stream• Tries to detect news before it is reported
Sandjai Bhulai ([email protected])
The future
• Many challenges ahead:
• How to deal with retweets?• Integration of reputation scores?• Use of profile information?• Advantages of semantic research?• Add feeds of other social media?• Generalize to other languages?• Dependencies of GPS information?• …
