Which of these applications is an example of IR?
Anonymous Quiz
17%
Searching emails
0%
Spam filtering
25%
Searching images or videos
58%
All of the above
What is the main difference between IR and databases?
Anonymous Quiz
82%
IR deals with free text, while databases handle structured data
9%
Databases are slower
0%
IR is always more accurate
9%
No difference
In IR, which component represents the user’s need?
Anonymous Quiz
20%
Documents
40%
Query
0%
Index
40%
Search engine
What are the main challenges in IR?
Anonymous Quiz
73%
Efficiency and effectiveness
9%
Algorithm design
9%
Text size only
9%
Language accuracy
How is a document defined in IR systems?
Anonymous Quiz
8%
Only a structured element
92%
An element with a unique identifier; it can be text, image, or video
0%
A small database
0%
A fixed text paragraph
Which of these can be considered a query in IR?
Anonymous Quiz
15%
Free text
15%
Image as a search input
23%
Musical tune for song search
46%
All of the above
What does “Relevance” mean in IR?
Anonymous Quiz
43%
Exact match between query text and document
50%
How well the document satisfies the user’s need
7%
Document size
0%
Indexing speed
Which is true about Bag of Words?
Anonymous Quiz
69%
Treats a document as a set of words without order
23%
Preserves word order
8%
Only for noscripts
0%
Only used in databases
In Boolean model, which operation expands results?
Anonymous Quiz
8%
AND
15%
OR
0%
NOT
77%
All of the above
Query: AI AND ML returns:
Anonymous Quiz
18%
Documents containing either
64%
Documents containing both
9%
Documents without AI
9%
Documents without ML
Query: cloud NOT storage returns:
Anonymous Quiz
17%
All documents
50%
Documents containing cloud only, not storage
8%
Documents containing storage only
25%
Nothing
How does the Boolean model partition the set?
Anonymous Quiz
67%
Matching / non-matching documents
22%
Important / unimportant documents
0%
Recent / old documents
11%
Short / long documents
What does Exact-Match Retrieval mean?
Anonymous Quiz
67%
Retrieve documents that fully satisfy the query
11%
Retrieve similar documents
11%
Retrieve related documents
11%
No meaning
What is the purpose of Term-Document Incidence Matrix?
Anonymous Quiz
78%
Shows presence or absence of a term in a document
11%
Stores full text
0%
Counts word frequency
11%
Sorts documents
What is the problem of incidence matrix in large collections?
Anonymous Quiz
22%
Very dense
0%
Very small
78%
Sparse, full of zeros
0%
Cannot be created
If we have 1 million documents and 500,000 terms, total cells = ?
Anonymous Quiz
30%
500 million
0%
1 billion
70%
500 billion
0%
1 trillion
What is the biggest drawback of the Boolean model?
Anonymous Quiz
75%
Does not rank results by relevance
25%
Always slow
0%
Never used
0%
Relies on AI
Which systems still use the Boolean model?
Anonymous Quiz
13%
Modern search engines only
88%
Email systems, libraries, Spotlight
0%
Neural networks
0%
None