Knn - Study guides, Class notes & Summaries

True or false: In a regression tree, every leaf of the tree has a different regression model that might use different attributes, have different coefficients, etc. - ANSWER True - Each leaf's individual model is tailored to the subset of data points that follow all of the branches leading to the leaf. True or false: Tree-based approaches can be used for other models besides regression. - ANSWER True - For example, a classification tree might have a different SVM or KNN model at each lea...

ISYE 6501 MIDTERM 1 FINAL PRACTICE TEST True or false: In a regression tree, every leaf of the tree has a different regression model that might use different attributes, have different coefficients, etc. - CORRECT ANSWER-True - Each leaf's individual model is tailored to the subset of data points that follow all of the branches leading to the leaf. True or false: Tree-based approaches can be used for other models besides regression. - CORRECT ANSWER-True - For example, a classific...

ISYE 6501 Exam 2 QUESTIONS WITH 100% VERIFIED SOLUTIONS LATEST UPDATE 2023/2024 What are some of the consequences of outliers in k-means? - ANSWER It will drag the cluster center artificially to one side Because k-means is a heuristic and thus fast what can we do? - ANSWER run it several times choosing different clusters centers and choose the best one and we can choose different values of k How does bias/variance change as k changes in KNN? - ANSWER the higher the k, the high...

ISYE 6501 - Final Prep – Midterm Questions With Correct Answers Types of classification models KNN SVM Types of Clustering Models K-Means Clustering Types of Response Prediction Models ARIMA CART Exponential Smoothing Linear Regression Logistic Regression Random Forest Types of Validation Method Cross Validation Types of Variation Estimate Models GARCH Models that use Time Series Data ARIMA CUSUM

clicking the Tableau icon in the upper left corner of any page allows you to do what - visit the start page. Which data sources do Tableau allow you to access and build viz?· - excel, text file, Json file, microsoft office, and pdf file In the Worksheet tab, in the Data pane, Tableau assigns any fields that contain discrete categorical information to the Dimensions area. What goes under Measures? - measures are fields that can be averaged or summed. how do we add color in tabl...

What is supervised learning? A type of machine learning which is used when we want to predict a certain output from a given input and have examples of input/out pairs. The training set we feed into the algorithm includes the desired solutions (labels). labelled data: each instance comes with the expected output What are the two types of supervised machine learning? (1) classification - binary classification: 2 classes - multiclass classification: classification between more than 2 ...

ISYE 6501 FINAL ACTUAL EXAM (UPDATED QUESTIONS AND ANSWERS) What do descriptive questions ask? - CORRECT ANSWER-What happened? (e.g., which customers are most alike) What do predictive questions ask? - CORRECT ANSWER-What will happen? (e.g., what will Google's stock price be?) What do prescriptive questions ask? - CORRECT ANSWER-What action(s) would be best? (e.g., where to put traffic lights) What is a model? - CORRECT ANSWER-Real-life situation expressed as math. What do classifie...

What do descriptive questions ask? What happened? (e.g., which customers are most alike) What do predictive questions ask? What will happen? (e.g., what will Google's stock price be?) What do prescriptive questions ask? What action(s) would be best? (e.g., where to put traffic lights) What is a model? Real-life situation expressed as math. What do classifiers help you do? differentiate What is a soft classifier and when is it used? In some cases, ther...

Quiz #1 Due Jan 29 at 10:59pm Points 5 Questions 5 Available Jan 13 at 7am - Jan 29 at 10:59pm Time Limit 40 Minutes Instructions This quiz was locked Jan 29 at 10:59pm. Attempt History Attempt Time Score LATEST Attempt 1 30 minutes 5 out of 5 Score for this quiz: 5 out of 5 Submitted Jan 29 at 10:39pm This attempt took 30 minutes. Warning: this is the real quiz that counts 5% of your final course grade. You can take this quiz once and only once! In particular, once you start the qui...

ISYE 6501 Midterm 1 QUESTIONS CORRECTLY ANSWERED LATEST UPDATE Support Vector Machine(SVM) is a supervised machine learning algorithm used for? - ANSWER Classification How to split the data if we only have one model? - ANSWER 70% training data, 30% testing data How to split the data if we want to compare models? - ANSWER 70% training, 15% validation and 15% testing When do we need to do scaling in data? - ANSWER When our factors/attributes/dimensions are orders of magnitude differe...