PPT-Lecture 19: Question Answering

KaiWei Chang CS University of Virginia kwkwchangnet Couse webpage httpkwchangnetteachingNLP16 1 CS6501NLP Question answering CS6501 Natural Language Processing 2 credit ifunnycom. iaaccn Abstract Community question answering cQA which pro vides a platform for people with diverse back ground to share information and knowledge has become an increasingly popular research topic In this paper we focus on the task of question re tri Julia Hirschberg. CS 4705. Today. Information Retrieval. Review of Methods. TREC IR Tracks. Question Answering. Factoid Q/A. A Sample System: UT Dallas (Harabagiu). A simpler alternative from MSR. Information Retrieval. What is Question Answering?. 2. Question Answering. One of the oldest NLP tasks (punched card systems in 1961). Simmons, Klein, . McConlogue. . 1964. Indexing and Dependency Logic for Answering English Questions. American Documentation 15:30, 196-204. via . Semantic Enrichment. Huan Sun. *. , . Hao. Ma. #. Scott Wen-tau Yih. #. , Chen-Tse Tsai. . , . Jingjing. Liu. #. , Ming-Wei Chang. #. *. University of California, Santa Barbara. #. Microsoft Research, Redmond. Systems & Resources. Ling573. NLP Systems & Applications. April 8, 2010. Roadmap. Two extremes in QA systems:. LCC’s PowerAnswer-2 . Insight’s Patterns…. Question classification (Li & Roth). Shallow & Deep. Techniques for NLP. Ling571. Deep Processing Techniques for NLP. March 9, 2011. Examples from Dan . Jurafsky. ). Roadmap. Question-Answering: . Definitions & Motivation. Basic pipeline:. Patricia A. Alexander. In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted. . BERTRAND RUSSELL. GOALS. Overview certain assumptions about question asking and question answering. AnswerinG. Deliverable 3 – Question Processing. John Gilmer. Michael Foster. Adam Ledyard. Overview. Question Classification. Question Reformulation. Query Expansion. Results. Related Reading. Question Classification. Overview. Ling573. Systems & Applications. April 4. , 2013. Roadmap. Dimensions of the problem. A (very) brief history. Architecture of a QA system. QA and resources. Evaluation. Challenges. Logistics Check-in. Lin Ma, . Zhengdong. Lu, and Hang Li. Huawei Noah’s Ark Lab, Hong Kong. http://. www.ee.cuhk.edu.hk. /~lma. /. . Mine the relationships between multiple modalities. Association different modalities. Conversational question understanding. Going to be high level…. Queston. Answering at Bing. Microsoft AI and Research – Core Relevance. About Us. Team: Core Relevance. Who: Researchers and engineers. SWBAT . make . inferences about the character by answering a question.. Get the Close Reader turn to page 3 and preview the text.. Make a prediction. What is the story, “Golden Glass” going to be about?. (including a sketch of Information Retrieval. ). Slides adapted from Dan . Jurafsky. , . Jim . Martin and Ed . Hovy. Web-based Question . Answering. Information Retrieval (briefly. ). Today. The notion of getting computers to give reasonable answers to questions has been around for quite awhile. Many Slides from:. Sanda. . Harabagiu. , Tao Yang. Chris Manning, David . Ferrucci. , . Watson . Team, and Paul Fodor. Outline. Question Answering. Types of QA tasks and approaches. Reading-based QA.