jeff_orkin

jeff_orkin - Speech Act Classification of Video Game Data...

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Speech Act Classification of Video Game Data Jeff Orkin MAS.622J Table of Contents: Introduction. ........................................................................................................................ 1 What is a Speech Act? . ................................................................................................... 1 About the Game. ............................................................................................................. 2 Gameplay Scripts. ........................................................................................................... 2 Data Labeling and Feature Extraction . ........................................................................... 3 Why Classify Speech Acts?. ........................................................................................... 4 Things I Learned From This Project. .................................................................................. 5 Speech Act Classification . .................................................................................................. 5 Baselines and Best Results. ............................................................................................. 6 Features. .......................................................................................................................... 7 Effect of Contextual Features . ........................................................................................ 8 Word Feature Selection: Probability Ratio vs Mutual Information. ............................... 9 Unigrams, Bigrams, and Trigrams, Oh My!. ................................................................ 13 Comparison of Classifiers. ............................................................................................ 14 Tagging with HMMs. .................................................................................................... 15 Monkey Wrench: the Continuation Class. .................................................................... 18 Other Things I Tried That Did Not Work Very Well. ...................................................... 20 Effect of Feature Window Size. .................................................................................... 20 Effect of Physical Acts as HMM States. ....................................................................... 21 Introduction What is a Speech Act? A speech act in the context of the restaurant game is a line of text that one player typed to another. I adapted six speech act classes from Searle's classifications that work well for labeling speech acts in the restaurant context.
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The restaurant game allows two humans to play the roles of a customer and waitress in a restaurant. Players can move around the restaurant, interact with objects, and (most importantly for this project) chat to each other with open-ended natural language text input. Images removed due to copyright restrictions.
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jeff_orkin - Speech Act Classification of Video Game Data...

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