IR Module 5

IR Module 5

University

20 Qs

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IR Module 5

IR Module 5

Assessment

Quiz

Engineering

University

Practice Problem

Hard

Created by

ANKITA KARIA

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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the material, how many information needs are usually a sufficient minimum for a reasonable test collection?

10

25

50

100

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which evaluation series focuses on European languages and cross-language information retrieval?

NTCIR

CLEF

TREC

20 Newsgroups

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For text classification research, which corpus is the larger, more recent Reuters release consisting of 806,791 documents and offering richer annotation?

Reuters-21578

Reuters-RCV1 (Reuters Corpus Volume 1)

Cranfield

20 Newsgroups (18,941 articles)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which user group typically prefers high precision according to the priorities listed?

Web users

Law and intelligence professionals

Medical researchers

Personal searches

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula represents accuracy as presented?

(TP + TN)/(TP + FP + FN + TN)

TP/(TP + FP)

TP/(TP + FN)

2TP/(2TP + FP + FN)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Alpha (α) in the F-measure is best described as which of the following?

Relative importance of recall compared to precision

Weight that decides the importance given to precision vs. recall

Number of positive predictions

Rate of false negatives

Scaling factor for accuracy

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Beta (β) in the F-measure is defined as what in relation to α?

β = α

β = 1 − α

β² = (1 − α)/α

β² = α/(1 − α)

β = √α

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