Semantic primitive Units related to verbs Too short? / -o(verb +object): too general ave boo love readi S-V-o subject verb object: many overlaps with entity-centric Kgs Trump was born in 194( Apple released iphone 8 00 long Difficult to obtain frequent facts to reflect commonness of commonsense knowledge Semantic Role Labeling( SRL ) recovers the latent predicate argument structure of a sentence ARGUMENT ARGUMENT Semantic Role Labeling SRL) the latent predicate argument structure of a sentence https://demo.allennlp.org/semantic-role-labeling
Semantic Primitive Units Related to Verbs • Too short? • v-o (verb + object): too general • have book • love reading • s-v-o (subject + verb + object): many overlaps with entity-centric KGs • Trump was born in 1946 • Apple released iphone 8 • Too long? • Difficult to obtain frequent facts to reflect commonness of commonsense knowledge https://demo.allennlp.org/semantic-role-labeling 16
Semantic Primitive Units Too fine grained, e. g, Event EXtraction in ACE 2005? After Sept. 11, 2001, Indonesia was quick to sign onto U.S. President George W. Bush's Time-Starting Attacker global war on terror. Event Type: Conflict. Attack Trigger State-of-the-art overall F1 Attack around 40%(Ji, & Huang, 2013) In Baghdad a cameraman died when an american tank fired on the palestine hotel Die Place Die Victim Trigger1 Die Instrument Trigger2 Attack Target Die Attack. Place Attack Target Attack Instrument acK Event Type: Life. Die Event Type: Conflict. Attack Qi Li, Heng Ji, Liang Huang: Joint Event Extraction via Structured Prediction with Global Features. ACL (1)2013: 73-82
Semantic Primitive Units • Too fine grained, e.g., Event Extraction in ACE 2005? After Sept. 11, 2001, Indonesia was quick to sign onto U.S. President George W. Bush's global war on terror. Time-Starting Attacker Trigger Attack Event Type: Conflict.Attack State-of-the-art overall F1: around 40% (Ji, & Huang, 2013) In Baghdad, a cameraman died when an American tank fired on the Palestine Hotel. Trigger1 Die Die.Place Die.Victim Attack.Place Attack.Target Die.Instrument Trigger2 Attack Attack.Instrument Attack.Target Event Type: Life.Die Event Type: Conflict.Attack Qi Li, Heng Ji, Liang Huang: Joint Event Extraction via Structured Prediction with Global Features. ACL (1) 2013: 73-82 17