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2003 Course Information Retrieval

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Total No. of Questions :12] [Total No. of Pages : 2 P1108 [3864] - 425 B.E. (IT) INFORMATION RETRIEVAL (2003 Course) (414450) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer Question 1 or 2, 3 or 4, and 5 or 6 from section - 1 and Question 7 or 8, 9 or 10, and 11 or 12 from section - II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. SECTION - I Q1) a) b) Q2) a) b) Q3) a) b) Q4) a) b) Explain Luhn s ideas Index term weighting. [8] Explain Single-Pass algorithm. [8] OR Explain Rochhio s algorithm. [8] Explain Cluster Hypothesis represent graphically the R-R and R-N-R distribution. [8] Describe Boolean and Vector model. [8] Explain with example sequential and inverted files. State their advantages and disadvantages. [10] OR Explain XML data model and evaluation of queries. [8] Explain with an example organization of records in multi-lists, state its advantage over inverted files. [10] P.T.O. Q5) a) b) Q6) a) b) Explain different evaluation measures for information retrieval systems.[8] Write notes on: Dendogram and SQL3 [8] OR What are the different starting points for search interfaces? [8] Write notes on: TREC Collection and User Oriented Measures. [8] SECTION - II Q7) a) b) Q8) a) b) What are OPACs? Discuss cataloguing using MARC record. OR What are Digital Libraries? What is MARC Record? Q9) a) b) What is multimedia IR? How is data retrieval done? Explain query specification and processing. OR Q10)Write short notes on: (any two) a) MULTOS. b) GEMINI c) Generic multimedia indexing. Q11)a) b) Compare parallel and distributed IR. Explain distributed architecture of a search engine. OR Q12)Write notes on : (any two) a) Suffix Arrays. b) Query processing. c) Challenges in web search. jjj [3864]-425 2 [8] [8] [8] [8] [9] [9] [18] [8] [8] [16]

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