124.11.lec1 - CS124/LINGUIST180 FromLanguagesto DanJurafsky...

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Click to edit Master subtitle style CS 124/LINGUIST 180 From Languages to  Dan Jurafsky Stanford University  Lecture 1 Introduction and overview,  regular expressions, finite automata
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 6/1/11 Part I: What this course is about Automatically extracting meaning and  structure from: w Natural language text  w Speech  w Web pages  w Social networks (and other networks) w Genome sequences 22
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 6/1/11 33 Commercial World Lots of exciting stuff going on…
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 6/1/11 44 Big Applications Information Retrieval and Extraction w Web Search w Sentiment Analysis w Summarization w Text Categorization Machine Translation Question Answering Speech Recognition
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 6/1/11 Information Extraction and  Sentiment Analysis http://www.bing.com/search?q=canon+pow Sentiment analysis Attribute detection Relation extraction 55
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 6/1/11 Sentiment Emotional Spell Check One of NYTimes 10 big idea of 2010 http://www.nytimes.com/interactive/2010/12 66
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 6/1/11 77 Blog Analytics Data-mining of blogs, discussion forums,  message boards, user groups, and other  forms of user generated media w Product marketing information w Political opinion tracking w Social network analysis w Buzz analysis (what’s hot, what topics are  people talking about right now).
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 6/1/11 Livejournal.com: o30-n5 o16-o22 o2-o8 s24 s22 s20 s18 s16 s14 s12 B 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 Graph from Pennebaker slides Cohn, Mehl, Pennebaker. 2004. Linguistic markers of psychological change  surrounding September 11, 2001. Psychological Science 15, 10: 687-693.
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 6/1/11 September 11 LiveJournal.com study:   We, us, our o30-n5 o16-o22 o2-o8 s24 s22 s20 s18 s16 s14 s12 B 1.1 1.0 .9 .8 .7 .6 .5 Cohn,  Mehl, Pennebaker. 2004.  Linguistic markers of psychological change  surrounding September 11, 2001. Psychological Science 15, 10: 687-693. Graph from Pennebaker slides
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 6/1/11 LiveJournal.com September 11, 2001 study:   Positive and negative emotion words Cohn,  Mehl, Pennebaker. 2004.  Linguistic markers of psychological change  surrounding September 11, 2001. Psychological Science 15, 10: 687-693. Graph from Pennebaker slides
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 6/1/11 Results from Pennebaker study Bloggers after 9/11  w greater negative emotion  w more socially engaged 11
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 6/1/11 Extracting Social Meaning from  Speech Uncertainty  (students in tutoring) Annoyance w callers to dialog systems: Deception Emotion Intoxication § http://www.youtube.com/v/setItyCfMcY Flirtation, Romantic interest
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 6/1/11 Google Translate The translation http://translate.google.com/translate?hl=en&sl=es&tl=en&u=http%3A%2F%2 The original recipe for tostones http://www.cocinadominicana.com/acompanamientos-ensaladas-pastelones
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 6/1/11 Machine Translation The Story of the Stone (“The Dream of the Red Chamber”) w Cao Xueqin 1792 Chinese gloss : Dai-yu alone on bed top think-of-with-
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