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Data Analytics (Eng) / Data Analitika (Ing) - 344

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A logistic regression model with 20 weights (parameters) is trained on a training set of 20 instances. How many descriptive features are used to represent each instance in the dataset?

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Which of the following functions is a linear function? Select all that apply. Negative marking will be used for incorrect answers.
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For a prediction problem where learning rate decay is used, if c and alpha zero are both fixed positive values, which of the following statements is the most correct?
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Consider the following two problems. Problem A focuses on handwritten digit classification, where the goal is to predict the digit (0-9) in an image. Problem B focuses on movie genre classification, where a movie can be predicted as belonging to multiple genres at once (e.g., Action, Comedy, Drama). Which of the following statements is the most accurate?
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If the differential of the logistic function with respect to the line separator used by a logistic regression model is 0.25, what is the output of the logistic regression model?
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Consider the following two problems. Problem A focuses on font-agnostic optical digit recognition, where the goal is to predict the digit (0-9) represented by an image of an optical character, regardless of the font type used to write the digit. Problem B focuses on predicting the likelihood of rainfall, where the chance of rainfall is quantified as a value in the range of 0 to 1, inclusive of both extremes. Which of the following statements is the most accurate?
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A given logistic regression model has two parameters w0=2 and w1=0.5 and rounds its output off to the nearest integer. What is the model prediction for an instance with a descriptive feature value of -4?
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Terminating gradient descent when the error remains constant over 10 epochs, is an example of ...
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A model Mw has only one descriptive feature d and comprises of two basis functions, b0(d) = 1 and b1(d) = d. The corresponding weights for these basis functions are w0 = -0.5 and w1 = 1, respectively. If the output Mw(d) = 0.2, what is the value of the descriptive feature d?
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Consider two logistic regression models (model A and model B) that both accept instances with one target value and the same number of independent features. The instances of model A only have numerical independent features while the instances of model B have a mixture of numerical and categorical independent features. One hot encoding is adopted where necessary, to facilitate error-based learning. Following the one hot encoding process, the inputs and outputs of both models are adjusted as necessary. Which of the following options is the most accurate with respect to the models after the one hot encoding process?

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