Vasileios Lampos - 2013 - A user‐centric model of voting intention from Social Media
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ACL 2013 - P13-1098
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Vasileios Lampos - 2013 - A user‐centric model of voting intention from Social Media
- 1. min , , A user‐centric model of voting intention from Social Media Vasileios Lampos, Daniel Preoţiuc‐Pietro & Trevor Cohn Computer Science Department, University of Sheffield, UK 1.1K users 23K words 42K users 81K words words users ⋯ ⋯ ⋮ ⋮ ⋯ ⋮⋮ ⋮ ⋮ bi‐linear bias voting intention % for political party during time interval regularisation parameter for word weights ℓ , ‐norm : row of RMSE % Method Austria UK training set benchmark mean poll 1.851 1.69 Last poll 1.47 1.723 Linear 1.442 3.067 , Bilinear 1.699 1.573 , Bilinear Multi‐task 1.439 1.478 … … ∈ … … ∈ ∈ , ∈ ∈ ∈ filtering out words & users UK 3 parties predictions CON LAB LIB CON LAB LIB polls SPÖ ÖVP FPÖ GRÜ Austria 4 parties predictions SPÖ ÖVP FPÖ GRÜ polls : frequency of word for user during time interval parties polls Bi‐convex iterative learning 1. Solve , ⦁ 2. Fix and solve , ⦁ 3. Fix and solve , ⦁ 4. Validate ? Go to Step 2 : END prediction performance