Explicit VS Implicit Flat" Semantics Explicit Semantic Analysis [Gabrilovich and Markovitch06, 07, 09 Represent Barack Obama text as bag Timeline of the presidency of Barack Obama(2009) Family of barack obama of Wikipedia Barack Obama citizenship conspiracy theories titles Barack obama Barack Obama presidential primary campaign 2008 Probabilistic Conceptualization Song et al. 11, 15 0.35 emerging 0.3 market Given "China, India 0.25 Russia. Brazil, retrieve 0.2 concepts from Probase 15 emerging emerging emerging [Wu et al., SIGMOD'12 economy country power bric country 0.1 economy country emerging 0.05 nation 9Explicit vs. Implicit “Flat” Semantics • Explicit Semantic Analysis [Gabrilovich and Markovitch ’06, ’07, ’09] • Probabilistic Conceptualization [Song et al., ’11,’15] 9 Barack Obama Timeline of the presidency of Barack Obama (2009) Family of Barack Obama Barack Obama citizenship conspiracy theories Barack Obama Barack Obama presidential primary campaign 2008 Represent text as bag of Wikipedia titles Given “China, India, Russia, Brazil”, retrieve concepts from Probase [Wu et al., SIGMOD’12]