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Computer Science · all questions

Machine Learning
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What are tree based classifiers?

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Suppose you are given 'n' predictions on test data by 'n' different models (M1, M2, .... Mn) respectively. Which of the following method(s) can be used to combine the predictions of these models?
Note: We are working on a regression problem
1. Median
2. Product
3. Average
4. Weighted sum
5. Minimum and Maximum
6. Generalized mean rule

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The "curse of dimensionality" referes

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What is Decision Tree?

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Which one of these is a tree based learner?

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It's possible to specify if the scaling process must include both mean and standard deviation using the parameters . . . . . . . .

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Consider the following dataset. x,y,z are the features and T is a class(1/0). Classify the test data (0,0,1) as values of x,y,z respectively.

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The term . . . . . . . . can be freely used, but with the same meaning adopted in physics or system theory.

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Bootstrapping allows us to

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What can be major issue in Leave-One-Out-Cross-Validation(LOOCV)?

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What is the actual number of independent parameters which need to be estimated in P dimensional Gaussian distribution model?

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Solving a non linear separation problem with a hard margin Kernelized SVM (Gaussian RBF Kernel) might lead to overfitting

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Which Association Rule would you prefer

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Supervised learning differs from unsupervised clustering in that supervised learning requires

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Type of matrix decomposition model is

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Bayes Theorem is given by where
1. P(H) is the probability of hypothesis H being true.
2. P(E) is the probability of the evidence(regardless of the hypothesis).
3. P(E|H) is the probability of the evidence given that hypothesis is true.
4. P(H|E) is the probability of the hypothesis given that the evidence is there.

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We have been given a dataset with n records in which we have input attribute as x and output attribute as y. Suppose we use a linear regression method to model this data. To test our linear regressor, we split the data in training set and test set randomly. What do you expect will happen with bias and variance as you increase the size of training data?

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Which of the following is true about Residuals ?

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Prediction is

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Function used for linear regression in R is

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