lect10-tagginghmm1.ppt

lect10-tagginghmm1.ppt - P a r t - o f - s p e e c h T a g...

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Andrew McCallum, UMass Amherst Hidden Markov Model Intro Lecture #10 Introduction to Natural Language Processing CMPSCI 585, Fall 2007 University of Massachusetts Amherst Andrew McCallum
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Andrew McCallum, UMass Amherst Today’s Main Points • Tips for HW#4 • Summary of course feedback • Part-of-speech tagging – What is it? Why useful? • Return to recipe for NLP problems • Hidden Markov Models – Definition – Generative Model Next time : Dynamic programming with Viterbi algorithm
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Andrew McCallum, UMass Amherst Class surveys very helpful Learning something? – Yes! Very edifying! – Yes. Lots. Statistical NLP is a lot of fun. – Yes! Both theory and practice. – Yes, I have been learning a lot. Particularly since the probability class pretty much everything is new to me. – Yes. I went to the Google talk on Machine Translation and mostly understood it, based entirely on experience from this class. – Yes. My understanding of dynamic programming has greatly increased.
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Andrew McCallum, UMass Amherst Class Surveys Pace and Lectures – I like that we cover a large breadth of material and don’t doddle. – Balance between theory and applications is great. – The slides are really good. I also like when math is demo’ed on the whiteboard. – Everything working well. – I like the quizzes. Helps me know what I should be learning. – In-class exercises very helpful. Let’s have more! – Pace: 5 just right, 3 slightly too fast, 3 slightly too slow. – Love the in-class exercises and group discussions. – Enthusiasm is motivating and contagious. Available after class to offer deeper insights, answer questions, etc. – Love hearing about NLP people history lessons
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Andrew McCallum, UMass Amherst Class Surveys Homeworks – Homework assignments are fantastic, especially the open-ended aspect! – The reinforce the learning. – Interesting, fun, promotes creativity, very much unlike other homeworks that just “have to be done”. I like particularly that we get a choice. .. room for doing stuff one finds interesting. – Fun because we get to play around; lots of freedom! – Helpful that some of the less interesting infrastructure (file reading. ..) is provided. – Initially confused about the report format. An example would help. (But comfortable with them now.) – Make grading rubric / expectations more clear. – Grading harsh--points off for not going above and beyond, even though the specified requirements were met. Hard to tell how much creativity is enough.
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Andrew McCallum, UMass Amherst Class Surveys Workload – (No one complaining.) – “Work is fun, so it feels like less.”
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Class Surveys – Would like more exercises and take-home quizzes. – Post slides sooner.
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lect10-tagginghmm1.ppt - P a r t - o f - s p e e c h T a g...

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