Question Answer | Navigational web search

Name
University
Course
Instructor

Question 1: (4 marks)
a) Using Broder’s taxonomy of web search, identify the correct class for the following web
information needs: Answers with reference to (Broder, 2002)
1. “I want to find the QUT homepage”.
Navigational web search
2. “I want to find the best provider for health insurance for single female, aged 20-40”
Transactional web search
3. “I want to find out information about Queensland’s Old Government House. For
example: When was it built? Who lived there? At which University is it situated in?”
Informational web search
4. “I want to sign up for a cheap music streaming service that has coverage of songs from
the 1980s, 1990s and 2000s”.
Transactional web search

Question 2: (3 Marks)
a) Define the following six areas of natural language processing that are commonly associated
with information retrieval. (1 sentence, max. 50 words for each area of NLP) Answered with
reference to (Liddy, 1998) and (Manning, Raghavan, and Schütze, 2008)
1) Morphological
It is an area of natural language processing that deals with the study of morphemes;
prefixes, affixes, and roots, which are structural components that form a word.
2) Lexical
It is an area of natural language processing that deals with the study at the level of
words with respect to their lexical meaning and parts of speech.
3) Syntactic
It is an area of natural language processing that deals with the study of grammatical
structure of words in a sentence; the arrangement of words in a sentence.
4) Semantic
It is an area of natural language processing that deals with the study of the meaning of
words and how they can be combined to make meaningful phrases in a sentence.
5) Discourse
It is an area of natural language processing that deals with the study of interpretation
of structure and meaning conveyed by text larger than a sentence and the effect a
preceding sentence has on the next sentence in terms of interpretation.
6) Pragmatic
It is an area of natural language processing that deals with the study of purposeful use
and comprehension of language depending on the situation at hand.
b) Identify which area or areas of natural language processing are applied in the following
algorithms/techniques. (For each simply state the analysis employed)
1) Brill Tagger
Lexical analysis
2) Porter Stemmer
Morphological analysis
3) Wordnet
Lexical analysis
4) Noun Phrase Shallow Parser/Chunker