1. 1 Discussion Class 10 Thesaurus Construction

2. 2 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

3. 3 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?

4. 4 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.

5. 5 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.

6. 6 Question 4: Phrase Construction (a) What are the concepts behind the Rada method of phrase construction? (b) Explain cohesion.

7. 7 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?

8. 8 Question 6: Term relationships (a) Define the following term relationships: equivalence hierarchical non-hierarchical quasi-synonym (b) Define the following term relations: part-whole collocation paradigmatic taxonomy and synonymy antonymy