Discussion Class 10

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Discussion Class 10

• Thesaurus Construction

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Discussion Classes
Format Question Ask a member of the class to
answer Provide opportunity for others to
comment When answering Give your name. Make
sure that the TA hears it. Stand up Speak
clearly so that all the class can hear
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Question 1 Manual thesaurus construction
(a) Describe the process of manual thesaurus
construction. (b) How would you expect a
manually constructed thesaurus to differ from one
built automatically?
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Question 2 Construction of vocabulary
In automatic thesaurus construction (a) What
steps are taken to normalize vocabulary? (b)
Explain the method of selecting vocabulary by
frequency of occurrence. (c) Explain the method
of selecting vocabulary by discrimination
value. (d) Explain the method of selecting
vocabulary by the Poison method.
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Question 3 Programs
What is the function of the following programs?
(a) select.c (b) hierarchy.c (c)
merge.c Explain the basic algorithm(s) used by
each program.
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Question 4 Phrase Construction
(a) What are the concepts behind the Rada method
of phrase construction? (b) Explain cohesion.
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Question 5 Vocabulary organization
(a) What is cluster analysis? (b) Explain how
cluster analysis is used in automatic thesaurus
generation. (c) What factors would you expect to
be important in using cluster analysis for
automatic thesaurus generation?
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Question 6 Term relationships
(a) Define the following term relationships equ
ivalence hierarchical non-hierarchical quasi-sy
nonym (b) Define the following term
relations part-whole collocation paradigmatic
taxonomy and synonymy antonymy