100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Natural Language Processing (NLP), Top Exam Questions and answers, verified. CA$12.21   Add to cart
Quickly navigate to
Preview
  2.  
  3. NLP
  4.  
  5. NLP
  6.  
  7. NLP

Exam (elaborations)

Natural Language Processing (NLP), Top Exam Questions and answers, verified.
 22 views  0 purchase
  • Institution
  • NLP

Natural Language Processing (NLP), Top Exam Questions and answers, verified. Artificial Intelligence - -A computer performing tasks that a human can do NLP Sentiment analysis is a form of... - -classification NLP topic modeling is a form of... - -Dimensionality reduction Tokenization ...

[Show more]

Preview 2 out of 7  pages

Document information

  • June 13, 2023
  • 7
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

Subjects

Written for

All documents for this subject (69)

Seller

avatar-seller
PassPoint02

Reviews received

Content preview

Natural Language Processing (NLP), Top
Exam Questions and answers, verified.

Artificial Intelligence - ✔✔-A computer performing tasks that a human can do



NLP Sentiment analysis is a form of... - ✔✔-classification



NLP topic modeling is a form of... - ✔✔-Dimensionality reduction



Tokenization - ✔✔-Splitting raw text into small, indivisible units for processing. Units can be words,
sentences, n-grams (n-word combos), other characters defined by regex



Stop words - ✔✔-Words that have very little semantic value



Stemming and Lemmatization - ✔✔-Cut word down to base form



Stemming- uses rough heuristics to reduce words to base



Lemmatization- uses vocabulary and morphological analysis (makes run, runs, running, and ran all the
same)



Named Entity Recognition - ✔✔-Identifies and tags named entities in text (people, places, organizations,
phone numbers, emails, etc)



aka entity extraction



Compound term extraction - ✔✔-extracting and tagging compound words or phrases in text

, Levenshtein distance - ✔✔-Minimum number of operations to get from one word to another. One way
of quantifying word similarity



Levenshtein operations - ✔✔-Deletions (delete a character)

Insertions (insert a character)

Mutation (change a character)



Corpus - ✔✔-Collection of texts



Bag of words model - ✔✔-- Simplified representation of text, where each document is recognized as a
bag of its words

- Grammar and word order are disregarded, but multiplicity is kept



Cosine similarity - ✔✔-Way to quantify the similarity between documents

1. Put each document in vector format

2. Find the cosine of the angle between the documents



Term frequency-inverse document frequency - ✔✔-(term frequency) * (inverse document frequency)



Term frequency - ✔✔-Term count/total terms



Inverse document frequency - ✔✔-- Considers how common a word is among all the documents

- Rare words get additional weight



Which classification models suffer from curse of dimensionality? - ✔✔-KNN, SVM, linear models
(linear/logisitic regression), decision trees



Distance-based models

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 PassPoint02. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$12.21. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

80202 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$12.21
  • (0)
  Add to cart