CS121 QUESTIONS AND CORRECT ANSWERS
Which of the following is *false* regarding Information Retrieval (IR)?
- Classic IR originated in the scientific domain and library records.
- Web IR mainly focuses on finding information of unstructured nature.
- IR satisfies information needs from within small collections.
- Current web IR considers the fact that the content is dynamic. - Answers - IR satisfies
information needs from within small collections.
Which of the following is *false* regarding the world-wide web (www)?
- The web content is large and dynamically generated by applications and users.
- Most online sites are accessible by incoming links from other sites.
- There is adversarial information to avoid (spam and false information).
- The web started with online static content (documents). - Answers - Most online sites
are accessible by incoming links from other sites.
Which of the following is *false* regarding popular web search engines?
- Including spell check.
- Using search query context to link to useful resources (maps, images, videos, etc).
- Hiding other visitors' searches to preserve users' privacy.
- Interpreting syntactic cues and keywords, such as math equations and currency. -
Answers - Hiding other visitors' searches to preserve users' privacy.
Which of the following is *not* a mapping rule for tokens Canonicalization?
- Removing special characters such as hyphen, periods and accents.
- Keeping the short version of acronyms to save space (in4matx).
- Reducing all letters to lower case (case-folding).
- Collapsing alternate spellings (colour -> color). - Answers - Keeping the short version
of acronyms to save space (in4matx).
Which of the following statements is *true* with regards to Stemming and
Lemmatization?
- Lemmatization is easier to perform than stemming.
- Stemming tries to reduce morphological word variants.
- Lemmatization reduces morphological variations of words to a common prefix.
- Stemming removes inflection to arrive at base dictionary form of the word. - Answers -
Stemming tries to reduce morphological word variants.
Which of the following is *false* regarding Information Retrieval (IR)?
- Classic IR originated in the scientific domain and library records.
- Web IR mainly focuses on finding information of unstructured nature.
- IR satisfies information needs from within small collections.
- Current web IR considers the fact that the content is dynamic. - Answers - IR satisfies
information needs from within small collections.
Which of the following is *false* regarding the world-wide web (www)?
- The web content is large and dynamically generated by applications and users.
- Most online sites are accessible by incoming links from other sites.
- There is adversarial information to avoid (spam and false information).
- The web started with online static content (documents). - Answers - Most online sites
are accessible by incoming links from other sites.
Which of the following is *false* regarding popular web search engines?
- Including spell check.
- Using search query context to link to useful resources (maps, images, videos, etc).
- Hiding other visitors' searches to preserve users' privacy.
- Interpreting syntactic cues and keywords, such as math equations and currency. -
Answers - Hiding other visitors' searches to preserve users' privacy.
Which of the following is *not* a mapping rule for tokens Canonicalization?
- Removing special characters such as hyphen, periods and accents.
- Keeping the short version of acronyms to save space (in4matx).
- Reducing all letters to lower case (case-folding).
- Collapsing alternate spellings (colour -> color). - Answers - Keeping the short version
of acronyms to save space (in4matx).
Which of the following statements is *true* with regards to Stemming and
Lemmatization?
- Lemmatization is easier to perform than stemming.
- Stemming tries to reduce morphological word variants.
- Lemmatization reduces morphological variations of words to a common prefix.
- Stemming removes inflection to arrive at base dictionary form of the word. - Answers -
Stemming tries to reduce morphological word variants.
