LS 5013- Information Storage and Retrieval Final - Fall 1997
Please use this form to submit your answers to the following questions:
I. Matching (2 points each)
Set One
| 1. An information need is
broken down into its component facets. 2. The extent to which all facets implicit in the request are required in the search strategy. 3. The level of detail in which a particular facet is represented. 4. Period between publication of an item and its appearance 5. Number of pertinent items retrieved that are new to the user. 6. The probability of demand for bibliographic materials declines with their age. 7. A system that must be able to obtain the same level of performance that a human expert achieves at the same task. 8. When an information center uses both print-on-paper and electronic sources. 9. Find reliable bibliographies on a topic and check these against the collection. 10. Measure of speed with which new publications are included in a database. |
A. Time lag B. Conceptual analysis C. Law of obsolescence D. Timeliness E. Exhaustivity F. Expert system G. Evaluation technique H. Specificity I. Novelty ratio J. Hybrid approach |
Set Two
| 11. Recall ratio 12. Most important factor influencing the precision with which a search can be conducted. 13. Common types of information retrieval system interfaces. 14. Measures the extent to which two or more individuals agree with each other in some task or judgement. 15. Most common way to evaluate automatic indexing, thesaurus construction, and query formulation. 16. Number of items a search strategy yields in relation to number on the subject in the database. 17. Computer program that either partially or completely analyzes the linguistic structure of sentences 18. Search strategy that uses the relationship of: AND, OR, and NOT. 19. The increasing involvement of literature on a particular subject into more countries, languages, journals, and document types, making it difficult to identify, collect, and organize. 20. Documents which are linked with other in a variety of ways, unlike conventional documents which are linear and static. |
A. Command driven, menu
driven or GUI B. Specificity of Vocabulary C. Determine performance in terms of recall and precision D. Hit rate E. Retrievability F. Hypertext G. Scatter H. Parser I. Boolean logical operators J. Consistency study |
II. Matching (2 points each)
21. This Venn diagram represents
A. and
B. or
C. not
D. with
22. When a search is broadened to achieve better recall:
A. Precision goes down
B. Precision goes up
C. Precision stays the same
D. Precision equals recall
23. What are the four major approaches to the construction of search engines?
A. building block; successive fractions; specific facet first; citation pearl growing
B. basic; intermediate; advanced; highly skilled
C. pyramid; all-inclusive; exponential; hyperdynamic
D. uninstructed; novice; intermediate; advanced
24. How is the truncation feature used in a search?
A. to group search terms by use of parentheses or brackets
B. to connect a trunk, or core, term to two or more other terms
C. to allow a fragment of a word to be searched, instead of the entire word or a particular form of the word
D. to allow foreign language terms to be automatically translated into English terms in an English database or vice versa
25. In selecting a database, the user generally chooses
A. the most comprehensive source
B. the most authoritative source
C. the "best" source
D. the most convenient source
26. To derive a precision ratio for a search, the requester must be asked to judge which of the retrieved items are ____________________ and which are not.
A. relevant
B. cost-effective
C. expressed
D. unique
27. Cost effectiveness refers to
A. the relationship between the benefits of a particular product or service and the cost of providing it
B. the relationship between the level of performance and the cost involved in achieving it
C. increasing the number of searches by 50% or more in one year
D. measuring the fixed costs of an information retrieval system
28. The best way to evaluate coverage of a database is
A. compare database entries with comprehensive bibliography
B. ask the vendor
C. read the database catalog
D. read a magazine article about different databases
29. The first step in setting up a search strategy is
A. conceptual analysis
B. determine appropriate terms
C. build sets of terms
D. combine sets
30. What will happen if I broaden my search strategy?
A. reduction of precision
B. reduction of recall
C. reduction of databases
D. nothing will happen
31. Hypertext systems are
A. systems that are extremely fast
B. systems that include sounds and images
C. systems created by Hyper Co.
D. systems that have dynamic links to other sources
32. The overriding factor in the selection of databases will be the match between the subject matter of the request and the ________________ coverage of the database.
A. topic
B. subject
C. word
D. definition
33. The approach which identifies the component facets, identifies the terms needed to fully represent each, and then combines these terms in the appropriate logical relationship is the
A. specific facet first
B. building block
C. successive fractions
D. "citation pearl growing"
34. The last step in conducting an evaluation is
A. analyzing and interpreting the results
B. executing the evaluation
C. defining the scope of the evaluation
D. modifying the system or service on the basis of the evalution results
35. A computer program which has been developed that exhibits human-like reasoning, which may be able to learn from its mistakes, and which quickly and cleverly performs tasks normally done by scarce and expensive experts is
A. Document delivery
B. Artificial intelligence
C. Information retrieval
D. Virtual library
36. The users of services of any kind usually evaluate them on the basis of
A. cost, time, and quality
B. personal experience and that of the news media
C. insignificant differences
D. the most authoritative salesperson
37. The two major challenges to information retrieval include the following:
A. analysis and representation
B. networking and electronic information
C. tracking and presenting material
D. access and document delivery
38. Why is it important to be aware of the phenomenon of scatter?
A. Scatter supports the highly specialized database and the highly specialized library or information center and doesn't favor the more general database, library, or center.
B. As the literature on some subject grows, it becomes increasingly scattered (more countries, languages, journals, and document types are involved) and thus easier to identify, collect, and organize.
C. The scatter of articles over titles increases at an approximately logarithmic rate.
D. The ranked list of journals contributing articles on some topic or subject can identify a core of journals that should be worth purchasing and scanning on a regular basis.
Questions 39, 40 and 41 can be answered by choosing one of the logical diagrams below:
39. Which diagram represents the relationship of searching for "Apples OR Oranges."
40. Which diagram represents the relationship of searching for "Apples AND Oranges"
41. Which diagram represents the relationship of searching for "Fruit NOT Tomatoes."
42. The experiments on automatic methods of information retrieval have shown that
A. the use of natural-language stemmed words is clearly not as good as other more elaborate linguistic devices such as links and roles in information retrieval.
B. automatic methods have been much more effective than manual methods in terms of recall and precision.
C. automatic methods have not improved that much over manual methods in terms of recall and precision.
D. automatic methods that incorporate statistics usually use word pairs (phrases) generated from word stems for their analyses.
43. "Simple factual" questions are answered faster using
A. online sources
B. print sources
C. database indexes
D. automatic aids
44. A powerful device for searching for words that share the same root is
A. truncation.
B. synonymity
C. logical operator
D. wildcard
45. Synonymy in language is reduced by
A. human indexing
B. full text indexing
C. natural language
D. vocabulary control
46. Of the four major approaches to the construction of search strategies, which is an iterative method?
A. building block approach
B. successive fractions approach
C. specific facet first approach
D. citation pearl growing approach
47. In a stop list, high-frequency function words from document and query representations are
A. included
B. excluded
C. transformed
D. highlighted
48. One way to increase recall (and decrease precision) in a given search using terms from Natural Language and/or Controlled Vocabulary is to
A. use the "and" Boolean logical operator.
B. use the "or" Boolean logical operator (exclude terms).
C. use the "not" Boolean logical operator.
D. not use the "and" Boolean logical operator.
49. High recall and high precision
A. are mutually exclusive
B. can both be achieved
C. refer to relevance of retrieval to search
D. can be achieved using expert systems
50. "It depends" in the context of our class discussions means
A. There are often many questions to the same answer
B. There are often many answers to the same question
C. There is often no one answer to a single question
D. I don't know, but I can fake it good
III. Essay Question and Search Exercise
Use your word processor to respond to the following exercise:
Formulate a strategy and execute a search to address the following search request. Use any or all of the resources to which you have been introduced this semester. Please describe in detail and justify your mental process, your course of action, and your method of execution. Include copies of any resources you locate which satisfy the information need expressed by the search request. Evaluate and critique the approach you took, the process(es) you used, and the results of your search. Your grade will be based not so much on the quality of the resources you locate, rather on the fullness of the description and explanation of the approach and process you take in the search exercise.
The search request: choose one of the authors cited in your chapter. Search for post-1990 papers, chapters, books, conference presentations and other publications by this author. (If your author has not been active, choose another author.)