Exam (elaborations)
ISYE 6501 Midterm 2 Part 1 Questions with 100% correct answers | verified | latest update 2024
- Course
- Institution
ISYE 6501 Midterm 2 Part 1 Questions with 100% correct answers | verified | latest update 2024
[Show more]
Seller
Follow
AnswersCOM
Reviews received
Content preview
ISYE 6501 Midterm 2 Part 1greedy algorithm - ANS-at each step, the algorithm does the thing that looks best
without taking future options into consideration; more classical
variable selection methods - ANS-stepwise - (forward, backward, combination)
lasso
elastic net
available metrics for variable selection criteria - ANS-p-value
r2
AIC / BIC
lasso - ANS-Giving regression a budget to use on coefficients which it uses on most
important coefficients
Have to scale first
elastic net - ANS-constrain combination of absolute value of coefficients and their
squares
have to scale first
Note: if absolute value is removed, ridge regression (to be covered later)
prediction error - ANS-function of bias and variance
model complexity on x axis
error on y axis
bias squared decreasing, variance increasing, prediction error concave curve with
inflection point where (ish) bias squared = variance
design of experiment - ANS-used as a means to quickly and efficiently get a subset of
data
Ex: polls, which similar products a retailer should display
-keep in mind comparison / control and blocking
blocking factor - ANS-something that could create variance in DOE
A/B Testing - ANS-experiment design to test two alternatives; binomial data used to
answer (with hypothesis test) which is better choice
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 AnswersCOM. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81989 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
Recently viewed by you
