IR (Information Retrieval ) 2nd SEM

QUIZ

1.Proximity operators are less efficient computationally because the index needs to store positional information.

Select one:

True

Not enough information provided

False

2. Given the query sa*t , if you want to search for permuterm wildcard index, which of the following keys can be looked upon?

Select one:

$sat*

t$sa* 

sat$*

t$as*

3. Consider an index for 1 million documents each having a length of 1,000 words. Say there are 100K distinct terms in total. What is the space requirement for an uncompressed term-document incidence matrix considering 1 cell takes 1 bit?

Select one:

10^10 bits

10^13 bits

10^11 bits

10^12 bits

4. Given a document collection which has 35 relevant documents, if an IR system retrieves 10 relevant and 13 irrelevant documents, what is the recall value of the system?

Select one:

0.29 

0.43

0.33

0.66

Solution: 10/35

5. Consider the following documents, 

Doc1: Data analysis deals with data sets

Doc2: Data mining in various fields

Doc3: Data analysis techniques and algorithms

Doc4: Data sets with temporal attributes

When the Term Document incidence matrix is constructed and the query data AND (sets  OR analysis) is executed on it, the resultant doc's retrieved will be which ones from the following?

Select one:

Doc1, Doc2,Doc3,Doc4

Doc1,Doc3, Doc4 

Doc1, Doc4

Doc1

6.Which of the following type of web pages can satisfy the informational query search of a user?

Select one:

How-To-Page

Category Page

FAQ’s

All of the choices

7. Given the Boolean Query (Brutus OR Caesar) AND Mary, which of following is optimised one of the above given query?

Select one:

(Brutus AND Mary) OR (Caesar AND Mary)

Brutus OR (Caesar and MARY)

(Brutus OR Caesar) AND Mary

Details not enough to predict the answer 

8. The OR operator assigns a higher score to documents that contain both terms.

Select one:

True

Not enough information provided

False

9. Which search engine is well supported with multiple languages?

Select one:

Ask

Bing

Google

Yahoo

10. Using the Porter’s algorithm, which of the following pairs cannot be mapped together?

Select one:

university-universe

abandoned-abandon

cars-car

volumes-volume

11. Consider the following documents,

Doc1: Data analysis deals with data sets

Doc2: Data mining in various fields

Doc3: Data analysis techniques and algorithms

Doc4: Data sets with temporal attributes

When the Term Document incidence matrix is constructed for the above documents, what will be the total number of entries in the matrix?

Select one:

52

50

56

64