Automatic Labeling of Semantic Roles. By Daniel Gildea and Daniel Jurafsky Presented By Kino Coursey. Outline. Their Goals Semantic Roles Related Work Methodology Results Their Conclusions. Their Goals.
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Automatic Labeling of Semantic Roles
By Daniel Gildea and Daniel Jurafsky
Presented By Kino Coursey
<CORPUS CORPNAME="bnc" DOMAIN="motion" FRAME="removing" LEMMA="take.v">
<C FE="Agt" PT="NP" GF="Ext">Pioneer/VVB European/AJ0</C>
<C TARGET="y"> take/VVI</C>
<C FE="Thm" PT="NP" GF="Obj">land/NN1</C>
<C FE="Src" PT="PP" GF="Comp">from/PRP indigenous/AJ0 people/NN0</C>
Used simple empirical distributions
Backoff combination: use less specific data only if more specific is missing
P(r|h,nt,t)=SumOf( P(r|c,nt,t)*P(c|h), over C clusters h belongs to)