Exam (elaborations)
NLP Exam 2 Questions and Answers
- Course
- Institution
Exam of 3 pages for the course NLP at NLP (NLP Exam 2)
[Show more]
Seller
Follow
julianah420
Reviews received
Content preview
NLP Exam 2Lexical Semantics - answer Focuses on the meaning of words and their relationships
What is similarity? - answer Is-A relationships between words
Ex: Apple is-a fruit
Cherry is-a fruit
Mango is-a fruit
What is relatedness? - answer Any relationships between words
Ex: Smoking and Heart Disease
Needle and Thread
Sugar and Diabetes
Why would we use Similarity and Relatedness? - answer For Information retrieval,
especially for query expansion in order to retrieve documents whose words have similar
meanings to the query words
Word Sense Disambiguation
Similarity Measures - answerPath-based
Information-Content Based
Path-based Measures - answerUse the path information between concepts in order to
quantify their similarity
Information Content Measures - answerUtilize path information but also incorporate the
probability of the concept occurring in text
Relatedness Measures - answerUtilize some contextual information about the concepts
Definition based
Distributional based
Definition-Based Measures - answerAdapted Lesk: based on overlaps between the two
concept's extended definitions
∑(overlap length) ^ 2
Distributional Measures - answerNumerically calculate the similarity between terms
Co-occurrence Vectors - answerMeasure frequencies/probabilities/existence of words
occurring in the definition
Cosine Similarity - answerCosine(X Y) = (X·Y)/(|X||Y|)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now