124.11.lec1

124.11.lec1 - Click to edit Master subtitle style CS...

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Unformatted text preview: 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 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 Commercial World Lots of exciting stuff going on Big Applications Information Retrieval and Extraction w Web Search w Sentiment Analysis w Summarization w Text Categorization Machine Translation Question Answering Speech Recognition Information Extraction and http://www.bing.com/search?q=canon+pow Sentiment analysis Attribute detection Relation extraction Sentiment Emotional Spell Check One of NYTimes 10 big idea of 2010 http://www.nytimes.com/interactive/2010/12 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 (whats hot, what topics are people talking about right now). Livejournal.com: o 3 0 -n 5 o 1 6 -o 2 2 o 2 -o 8 s 2 4 s 2 2 s 2 0 s 1 8 s 1 6 s 1 4 s 1 2 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. September 11 LiveJournal.com study: We, us, our o30-n5 o16-o22 o2-o8 s 24 s 22 s 20 s 18 s 16 s 14 s 12 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 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 Results from Pennebaker study Bloggers after 9/11 w greater negative emotion w more socially engaged Extracting Social Meaning from Uncertainty (students in tutoring) Annoyance w callers to dialog systems: Deception Emotion Intoxication http://www.youtube.com/v/setItyCfMcY Flirtation, Romantic interest 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 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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124.11.lec1 - Click to edit Master subtitle style CS...

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