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NLP Introduction to NLP Examples of Text Classification NLP Introduction to NLP Examples of Text Classification

NLP Introduction to NLP Examples of Text Classification - PowerPoint Presentation

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Uploaded On 2019-03-13

NLP Introduction to NLP Examples of Text Classification - PPT Presentation

Who wrote which Federalist papers 17878 anonymous essays try to convince New York to ratify US Constitution Jay Madison Hamilton Authorship of 12 of the letters in dispute 1963 solved by ID: 755867

nlp greatest daviddlewis www greatest nlp www daviddlewis resources testcollections reuters hamilton madison http webkb text subject article

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Presentation Transcript

Slide1

NLPSlide2

Introduction to NLP

Examples of Text ClassificationSlide3

Who wrote which Federalist papers?

1787-8: anonymous essays try to convince New York to ratify U.S Constitution:

Jay, Madison, Hamilton.

Authorship of 12 of the letters in dispute1963: solved by Mosteller and Wallace using Bayesian methods

James Madison

Alexander HamiltonSlide4

Male or female author?

By

1925 present-day Vietnam was divided into three parts under French colonial rule. The

southern

region embracing Saigon and the Mekong delta was the colony of Cochin-China; the central area with its imperial capital at Hue was the protectorate of Annam…Clara never failed to be astonished by the extraordinary felicity of her own name. She found it hard

to trust herself to the mercy of fate, which had managed over the years to convert her greatest shame into one of her greatest assets…

S.

Argamon, M. Koppel, J. Fine, A. R. Shimoni, 2003. “Gender, Genre, and Writing Style in Formal Written Texts,” Text, volume 23, number 3, pp. 321–346Slide5

Positive or negative movie review?

unbelievably

disappointing

Full of

zany characters and richly applied satire, and some great plot twists this is the greatest screwball comedy ever filmed It was pathetic. The worst part about it was the boxing scenes.Slide6

What is the subject of this article?

Antogonists

and Inhibitors

Blood Supply

Chemistry

Drug TherapyEmbryology

Epidemiology…

MeSH Subject Category Hierarchy

?

MEDLINE ArticleSlide7

Well-known Datasets

20 newsgroups

http://qwone.com/~jason/20Newsgroups/

Reuters-21578http://www.daviddlewis.com/resources/testcollections/reuters21578/

Cats: grain, acquisitions, corn, crude, wheat, trade…WebKB

http://www-2.cs.cmu.edu/~webkb/

course, student, faculty, staff, project, dept, otherRCV1

http://www.daviddlewis.com/resources/testcollections/rcv1/Larger Reuters corpusSlide8

NLP