1. Textual Relations Task Definition Annotate input text with disambiguated Wikipedia titles: Motivation Current state-of-the-art Wikifiers, using purely statistical methods, already achieve good performance, leveling off at around 75%~80% F1 Limitation of Bag-of-words representation Task Definition Annotate input text with disambiguated Wikipedia titles: Motivation Current state-of-the-art Wikifiers, using purely statistical methods, already achieve good performance, leveling off at around 75%~80% F1 Limitation of Bag-of-words representation Evaluations Achieves significant improvement over the previous state-of- the-art systems Run the Relational Inference Wikifier (RI) “as-is” without retraining on the target domain, still obtains significant gain over our previous submitted Entity Linking system(Cogcomp). Discussion Evaluations Achieves significant improvement over the previous state-of- the-art systems Run the Relational Inference Wikifier (RI) “as-is” without retraining on the target domain, still obtains significant gain over our previous submitted Entity Linking system(Cogcomp). Discussion Relational Inference for Wikification Xiao Cheng and Dan Roth This research is sponsored by DARPA under agreement number FA8750-13-2-0008, and partly supported by the IARPA under contract number D11PC20155, by the ARL under agreement W911NF-09-2-0053, and by the Multimodal Information Access & Synthesis Center at UIUC. Demo: http://cogcomp.cs.illinois.edu/demo/wikify/ http://cogcomp.cs.illinois.edu/demo/wikify/ Blumenthal (D) is a candidate for the U.S. Senate seat now held by Christopher Dodd (D), and he has held a commanding lead in the race since he entered it. But the Times report has the potential to fundamentally reshape the contest in the Nutmeg State. Chris Dodd From Wikipedia, the free encyclopedia The New York Times From Wikipedia, the free encyclopedia Connecticut From Wikipedia, the free encyclopedia Democratic Party (United States) From Wikipedia, the free encyclopedia United States Senate From Wikipedia, the free encyclopedia Richard Blumenthal From Wikipedia, the free encyclopedia...ousted long time Yugoslav President Slobodan Milošević in October. Mr. Milošević's Socialist Party… Argument 1Relation TypeArgument 2 Yugoslav PresidentappositionSlobodan Milošević coreferenceMilošević possessiveSocialist Party founded Slobodan Milošević From Wikipedia, the free encyclopedia Socialist Party of Serbia From Wikipedia, the free encyclopedia Mubarak, the wife of deposed Egyptian President Hosni Mubarak, … Mubarak wife Egyptian President Hosni Mubarak We are interested in extracting high-precision textual relations that help with disambiguation. Specifically, we focus on the following types of relations: Syntactico-semantic relations (Chan & Roth ‘10) Coreference relations Acronyms, partial names, nominal mentions We show that both linguistic and world knowledge, specifically the ability to use relational information, are crucial in the task of Wikification. To do that, we introduce an extensible and efficient inference framework that leverages better language understanding. Additional work is needed to accumulate and better integrate our knowledge about NIL entities to fully address the Entity Linking task and handle additional encyclopedic resources. The performance gains and error analysis also calls for joint entity typing, coreference and disambiguation. Bag-of-words loses important relational information Modeling constraining interaction between concepts Need to link Mubarak to Suzanne Mubarak Identify relation (Mubarak, wife, Hosni Mubarak) Promote a pair of candidates that is coherent with text meaning High-level algorithm description TypeExample PremodifierIranian Ministry of Defense PossessiveNYC’s stock exchange FormulaicChicago, Illinois PrepositionPresident of the US Relation Retrieval Uses DBPedia and Wikipedia page link relations as our knowledge base Retrieve lexically similar candidates and filter q 1 =(Socialist Party of France,?, *Milošević*) q 2 =(Slobodan Milošević,?,*Socialist Party*) Relation Inference References: X. Cheng and D. Roth, Relational Inference for Wikification. EMNLP’13 L. Ratinov and D. Roth and D. Downey and M. Anderson, Local and Global Algorithms for Disambiguation to Wikipedia. ACL’11 References: X. Cheng and D. Roth, Relational Inference for Wikification. EMNLP’13 L. Ratinov and D. Roth and D. Downey and M. Anderson, Local and Global Algorithms for Disambiguation to Wikipedia. ACL’11