ISYE 6501 Final Questions and Correct Answers/ Latest Update / Already Graded

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ISYE 6501 Final Questions and Correct
Answers/ Latest Update / Already Graded
Data point

Ans: Row in a table


Column

Ans: Attribute, feature, covariate, predictor, factor, variable


Response/outcome

Ans: The 'answer' for each data point


Structured data

Ans: Data that can be stored in a structured way


Quantitative

Ans: Numbers with meaning


Categorical

Ans: Numbers without meaning


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Binary data

Ans: Can only take one of two values


Unstructured data

Ans: Data that is not easily described and stored


Unrelated data

Ans: No relationship between data points


Time series data

Ans: Same data recorded over time


Validation

Ans: Measuring the quality of a model


Real effect

Ans: Real relationship between attributes and response, same
in all data sets



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Random effect

Ans: Random, but looks like a real effect, different in all data
sets


Model fit

Ans: Captures real and random effects


Heuristic

Ans: Fast, good but not guaranteed to find absolute best
solution


Expectation-maximization (EM)

Ans: An iterative method to find maximum likelihood or
maximum a posteriori estimates of parameters in statistical
models


Supervised learning

Ans: Correct answer (response) is known for each data point
(Ex: Classification)


Unsupervised learning

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