Week 9 – R Advanced Topics

Question 1

What is a Logit analysis?

Answer 1

• Logistic distribution

* More sensitive at extreme values of X variables

Question 2

What is a Probit analysis?

Answer 2

• Normal distribution
• More sensitive at values of variables near their
means

Question 3

What are Perceptrons?

Answer 3

Early linear attempt at machine learning

Question 4

What are Neural networks and what are some characteristics?

Answer 4

• Uses logistic function
• Has at least three levels: inputs (X), hidden (H),
and outputs (Y)
• Can have multiple hidden layers (deep neural
networks)
• Subject to local optima

Question 5

What is local optima?

Answer 5

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