TAAL EN COMPUTER INTRO

Paola Monachesi

Why Taal en Computer?

Machine Translation

Question Answering

Question Answering

Jeopardy

http://www.youtube.com/watch?v=SyXHF3PyyWo

Topics

Grammar Corpora Information extraction Applications

Question Answering Machine Tranlsation

Formal Grammar

Structure in language Formal grammars Example:

Marie zag [de man met de verrekijker] Lion

http://languagelink.let.uu.nl/~lion/?s=Playgrounds/CFG_Playground&lang=en

Grammar

Parse

Structure

More on structure

Syntactic trees can be employed to visualize structure in a sentence

Example Marie [zag de man] met de verrekijker

Lion http://languagelink.let.uu.nl/~lion/?

s=Playgrounds/Treebuilder_Playground&lang=en

Tree building

Tree result

Corpora

large and structured collection of texts statistical analysis hypothesis testing checking occurrences validating linguistic rules corpus annotation Lion

http://languagelink.let.uu.nl/~lion/?s=Playgrounds/Brown_Playground&lang=en

Example

<s> <w NN2>Explosives <w VVD>found <w PRP>on <w NP0>Hampstead <w NP0>Heath <PUN>.

Explosives found on Hampstead Heath

new sentence

plural noun

past tense verb

preposition

proper noun

proper noun

punctuation

Information extraction

Components for knowledge extraction: Corpora annotated with linguistic

information Grammars Machine Learning

Extracting Job Openings from the Web

foodscience.com-Job2

JobTitle: Ice Cream Guru

Employer: foodscience.com

JobCategory: Travel/Hospitality

JobFunction: Food Services

JobLocation: Upper Midwest

Contact Phone: 800-488-2611

DateExtracted: January 8, 2001

Source: www.foodscience.com/jobs_midwest.html

OtherCompanyJobs: foodscience.com-Job1

Course

Taal en Computer Blok 3

2 hours HC 4 hours PC

Evaluation Practical exercises Tests Project

Paper Presentation