CSCI 587 - Lecture 26 Extending the Prolog Parser

• Statistical Methods
  • Random variable
  • Conditional Probability
  • Bayes Theorem
  • maximum likelihood estimator
• Part of Speech Tagging
• Exam Take home question
• Exam Overview
  • Tests 1 and 2
  • DCG
  • Things not on test 1 and 2 are fair game: Chart with features
• Extending the prolog parser
• He and Bess went down to the pond and Frank let it sail.
• When Frank had found a stick, the boat was way out on the pond, and the stick did not reach it.
• Then Frank ran around the pond to get it.
• But just when he got near the boat, a gust of wind sent it out on the pond, away from the bank.
• Bess ran back and got the stick, but she did not reach the boat with it.
• Creation of the Dictionary
  • words on separate lines
  • sort -u
  • global insertions of extras
• Handling the Unix man page for spell
• Non-sentence portions

  Name
  spell, spellin, spellout - check text for spelling errors
  
  Description
  The spell command collects words from the named documents, and looks
  them up in a spelling list.  Words that are not on the spelling list and
  are not derivable from words on the list 
  are printed on the standard output.  If no
  files are specified, words are collected from the standard input.
  
  -v             Displays words not found in spelling list with all 
  plausible derivations from spelling list.
  -b             Checks data according to British spelling. Besides
  preferring centre, colour, speciality, travelled, this
  option insists upon -ise instead of -ize in words like
  standardise.
  -x             Precedes each word with an equal sign and displays
  all plausible derivations.
  

Readings

Sections 7.1-7.2

Reminder

Exam May 6 at 9:00