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Cppb Cumulative Exam Questions And Answers
CPPB CUMULATIVE EXAM QUESTIONS AND ANSWERS Which of these statements reflects a social role? a. "I really hate group projects, I never get my way!" b. "Let's make sure we listen to everyone's ideas, so no one feels left out." c. "Sarah, will you be in charge of research and Mark will you put together the presentation?" d. None of the above - ANSWER-b. "Let's make sure we listen to everyone's ideas, so no one feels left out." *____________ are pr...
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Csc529 Advanced Data Mining Exam Questions With Verified Answers
PopularCSC529 ADVANCED DATA MINING EXAM QUESTIONS WITH VERIFIED ANSWERS what is one of the largest issues in NB? how can it be worked around (what is this called) - Answer-When a value for an attribute never occurs for a class, it will cancel out everything else to make the probability of the class 0 Laplace estimator: Add on occurrence to every value/attribute/class Does the Laplace estimator have to be one - Answer-No - it could be any number. It also doesn't have to be evenly distributed b...
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Data Mining Exam #2 Study Guide Questions And Answers
DATA MINING EXAM #2 STUDY GUIDE QUESTIONS AND ANSWERS Underfitting - Answer-When there's poor performance on the training data and poor generalization to other data What is K in K-cross validation? - Answer-the number of sets the data is split into How many sets are needed for Cross Validation - Answer-K What are the main two techniques for cross-validation - Answer--K-folds Cross Validation -Leave One Out Cross Validation(LOOCV) Leave One Out Cross Validation(LOOCV) - Answer-...
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Data Mining Practice Exam #1 Questions With Correct Answers
DATA MINING PRACTICE EXAM #1 QUESTIONS WITH CORRECT ANSWERS Which of the following statements are correct for Logistic Regression? (i) Logistic Regression is used for a classification problem, where the target variable is categorical. (ii) Logistic Regression is an example of unsupervised learning. (iii) Logistic Regression is used for predicting a quantitative variable since it has the word regression in its name. - Answer-i only We are interested in making a bet with a friend. The p...
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Data Mining: Exam Set Questions And Answers
DATA MINING: EXAM SET QUESTIONS AND ANSWERS In a cross-validation plot, if the first value (from left to right) of cross-validation relative error to fall under the dotted line is the single-node tree, then we may still want to select a different value of tree size (and therefore a different value of cp) because: - Answer-We typically do not want all observations to be predicted as having the same value of the dependent variable. Imagine that we used the following loss matrix: matrix(c(0,...
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Data Mining Concepts Exam Questions With Complete Answers
DATA MINING CONCEPTS EXAM QUESTIONS WITH COMPLETE ANSWERS How do we handle missing data? - Answer-- Common method is to just replace the missing value with simple substitutes (ex:mean/median). - Does not adversely impact variability of the data set because you can assess performance using the validation data - Sophisticated method is to use linear regression, based on other variables, to fill in the missing variables Why's it necessary to normalize and rescale the data? - Answer-- Sub...
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