What is the harmonic mean of Precision and Recall called?
Anonymous Quiz
50%
F1-Score
17%
Arithmetic Mean
17%
Geometric Mean
17%
Weighted Average
In evaluation, what do relevance judgments provide?
Anonymous Quiz
9%
A measure of system speed
73%
Ground truth data for evaluation
18%
User interface preferences
0%
Hardware performance metrics
What is NOT part of the standard Cranfield evaluation setup?
Anonymous Quiz
25%
Document Collection
17%
Set of Queries
17%
Relevance Judgments
42%
Live user interaction
What is the primary goal of IR system evaluation?
Anonymous Quiz
23%
To measure only processing speed
62%
To assess effectiveness and/or efficiency
8%
To determine visual design quality
8%
To count the number of documents
What does a high Recall value indicate?
Anonymous Quiz
18%
The system returns very precise results
82%
The system finds most relevant documents
0%
The system has a small index
0%
The system uses simple algorithms
What is the purpose of the Fβ measure?
Anonymous Quiz
18%
To ignore Recall completely
82%
To weight the importance of Precision vs Recall
0%
To focus only on Precision
0%
To measure time complexity
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What is a key characteristic of laboratory-based IR evaluation?
Anonymous Quiz
50%
It involves real users performing tasks
30%
It uses controlled test collections
20%
It requires internet connectivity
0%
It focuses on mobile devices
What is the role of the evaluation module in the Cranfield paradigm?
Anonymous Quiz
27%
To index documents
73%
To compare results against relevance judgments
0%
To collect user feedback
0%
To design the user interface
How are reusable test collections beneficial?
Anonymous Quiz
9%
They are cheap to create
82%
They allow comparison of different systems
9%
They never become outdated
0%
They require no maintenance
What is the main advantage of binary relevance judgments?
Anonymous Quiz
0%
They capture nuanced relevance levels
18%
They make evaluation simpler
82%
They are more accurate than graded judgments
0%
They require less human effort
What does Precision focus on?
Anonymous Quiz
25%
The quantity of retrieved documents
50%
The quality of retrieved documents
8%
The speed of retrieval
17%
The diversity of sources
What is a limitation of using only Precision for evaluation?
Anonymous Quiz
83%
It doesnt consider the total relevant documents
17%
It is too difficult to calculate
0%
It requires special hardware
0%
It only works for small collections
What is the relationship between Recall and the number of documents retrieved?
Anonymous Quiz
23%
Recall decreases as more documents are retrieved
69%
Recall generally increases as more documents are retrieved
8%
Recall is unaffected by the number retrieved
0%
Recall is maximized when no documents are retrieved
Why is the F1-Score considered a balanced measure?
Anonymous Quiz
8%
It only considers Precision
15%
It only considers Recall
77%
It gives equal weight to Precision and Recall
0%
It ignores both Precision and Recall
What is a common source for the queries used in test collections?
Anonymous Quiz
19%
Real user search logs
69%
Information needs formalized into topics
13%
Random word generation
0%
Social media trends
What does a test collections document collection component provide?
Anonymous Quiz
44%
The algorithms for searching
50%
The data to be searched
0%
The users for testing
6%
The hardware for operation
What is the purpose of having multiple queries in a test collection?
Anonymous Quiz
40%
To test the system on a variety of information needs
45%
To increase the size of the document collection
5%
To improve the indexing speed
10%
To simplify the evaluation metrics
What is the final output of the Cranfield evaluation process?
Anonymous Quiz
41%
A measure of effectiveness
34%
A new search algorithm
9%
A user interface design
16%
A hardware configuration report
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