Isye 6501 Final exam questions
with answers
1-norm - CORRECT ANSWERS ✔✔Similar to rectilinear distance;
measures the straight-line length of a vector from the origin. If
z=(z1,z2,...,zm) is a vector in an m-dimensional space, then it's 1-
norm is square root(|𝑧1|+|𝑧2|+⋯+|𝑧𝑚| = |𝑧1|+|𝑧2|+⋯+|𝑧| = Σm
over i=1 |𝑧𝑖|
A/B Testing - CORRECT ANSWERS ✔✔testing two alternatives to
see which one performs better
2-norm - CORRECT ANSWERS ✔✔Similar to Euclidian distance;
measures the straight-line length of a vector from the origin. If
z=(z1,z2,...,zm) is a vector in an 𝑚-dimensional space, then its 2-
norm is the same as 1-norm but everything is squared= square
root(Σm over i=1 (|𝑧𝑖|)^2)
Accuracy - CORRECT ANSWERS ✔✔Fraction of data points
correctly classified by a model; equal to TP+TN / TP+FP+TN+FN
Action - CORRECT ANSWERS ✔✔In ARENA, something that is
done to an entity.
,Additive Seasonality - CORRECT ANSWERS ✔✔Seasonal effect that
is added to a baseline value (for example, "the temperature in June is
10 degrees above the annual baseline").
Adjusted R-squared - CORRECT ANSWERS ✔✔Variant of R2 that
encourages simpler models by penalizing the use of too many
variables.
AIC - CORRECT ANSWERS ✔✔Akaike information criterion-
Model selection technique that trades off between model fit and
model complexity. When comparing models, the model with lower
AIC is preferred. Generally penalizes complexity less than BIC.
Algorithm - CORRECT ANSWERS ✔✔Step-by-step procedure
designed to carry out a task.
Analysis of Variance/ANOVA - CORRECT ANSWERS ✔✔Statistical
method for dividing the variation in observations among different
sources.
Approximate dynamic program - CORRECT ANSWERS
✔✔Dynamic programming model where the value functions are
approximated.
,Arc - CORRECT ANSWERS ✔✔Connection between two
nodes/vertices in a network. In a network model, there is a variable
for each arc, equal to the amount of flow on the arc, and (optionally)
a capacity constraint on the arc's flow. Also called an edge.
Area under the curve (AUC) - CORRECT ANSWERS ✔✔Area under
the ROC curve; an estimate of the classification model's accuracy.
Also called concordance index.
ARIMA - CORRECT ANSWERS ✔✔Autoregressive integrated
moving average.
Arrival Rate - CORRECT ANSWERS ✔✔Expected number of
arrivals of people, things, etc. per unit time -- for example, the
expected number of truck deliveries per hour to a warehouse.
Assignment Problem - CORRECT ANSWERS ✔✔Network
optimization model with two sets of nodes, that finds the best way to
assign each node in one set to each node in the other set.
Attribute - CORRECT ANSWERS ✔✔A characteristic or
measurement - for example, a person's height or the color of a car.
, Generally interchangeable with "feature", and often with "covariate"
or "predictor". In the standard tabular format, a column of data.
Autoregression - CORRECT ANSWERS ✔✔Regression technique
using past values of time series data as predictors of future values.
Autoregressive integrated moving average (ARIMA) - CORRECT
ANSWERS ✔✔Time series model that uses differences between
observations when data is nonstationary. Also called Box-Jenkins.
Backward elimination - CORRECT ANSWERS ✔✔Variable selection
process that starts with all variables and then iteratively removes the
least-immediately-relevant variables from the model.
Balanced Design - CORRECT ANSWERS ✔✔Set of combinations of
factor values across multiple factors, that has the same number of
runs for all combinations of levels of one or more factors.
Balking - CORRECT ANSWERS ✔✔An entity arrives to the queue,
sees the size of the line (or some other attribute), and decides to leave
the system.
with answers
1-norm - CORRECT ANSWERS ✔✔Similar to rectilinear distance;
measures the straight-line length of a vector from the origin. If
z=(z1,z2,...,zm) is a vector in an m-dimensional space, then it's 1-
norm is square root(|𝑧1|+|𝑧2|+⋯+|𝑧𝑚| = |𝑧1|+|𝑧2|+⋯+|𝑧| = Σm
over i=1 |𝑧𝑖|
A/B Testing - CORRECT ANSWERS ✔✔testing two alternatives to
see which one performs better
2-norm - CORRECT ANSWERS ✔✔Similar to Euclidian distance;
measures the straight-line length of a vector from the origin. If
z=(z1,z2,...,zm) is a vector in an 𝑚-dimensional space, then its 2-
norm is the same as 1-norm but everything is squared= square
root(Σm over i=1 (|𝑧𝑖|)^2)
Accuracy - CORRECT ANSWERS ✔✔Fraction of data points
correctly classified by a model; equal to TP+TN / TP+FP+TN+FN
Action - CORRECT ANSWERS ✔✔In ARENA, something that is
done to an entity.
,Additive Seasonality - CORRECT ANSWERS ✔✔Seasonal effect that
is added to a baseline value (for example, "the temperature in June is
10 degrees above the annual baseline").
Adjusted R-squared - CORRECT ANSWERS ✔✔Variant of R2 that
encourages simpler models by penalizing the use of too many
variables.
AIC - CORRECT ANSWERS ✔✔Akaike information criterion-
Model selection technique that trades off between model fit and
model complexity. When comparing models, the model with lower
AIC is preferred. Generally penalizes complexity less than BIC.
Algorithm - CORRECT ANSWERS ✔✔Step-by-step procedure
designed to carry out a task.
Analysis of Variance/ANOVA - CORRECT ANSWERS ✔✔Statistical
method for dividing the variation in observations among different
sources.
Approximate dynamic program - CORRECT ANSWERS
✔✔Dynamic programming model where the value functions are
approximated.
,Arc - CORRECT ANSWERS ✔✔Connection between two
nodes/vertices in a network. In a network model, there is a variable
for each arc, equal to the amount of flow on the arc, and (optionally)
a capacity constraint on the arc's flow. Also called an edge.
Area under the curve (AUC) - CORRECT ANSWERS ✔✔Area under
the ROC curve; an estimate of the classification model's accuracy.
Also called concordance index.
ARIMA - CORRECT ANSWERS ✔✔Autoregressive integrated
moving average.
Arrival Rate - CORRECT ANSWERS ✔✔Expected number of
arrivals of people, things, etc. per unit time -- for example, the
expected number of truck deliveries per hour to a warehouse.
Assignment Problem - CORRECT ANSWERS ✔✔Network
optimization model with two sets of nodes, that finds the best way to
assign each node in one set to each node in the other set.
Attribute - CORRECT ANSWERS ✔✔A characteristic or
measurement - for example, a person's height or the color of a car.
, Generally interchangeable with "feature", and often with "covariate"
or "predictor". In the standard tabular format, a column of data.
Autoregression - CORRECT ANSWERS ✔✔Regression technique
using past values of time series data as predictors of future values.
Autoregressive integrated moving average (ARIMA) - CORRECT
ANSWERS ✔✔Time series model that uses differences between
observations when data is nonstationary. Also called Box-Jenkins.
Backward elimination - CORRECT ANSWERS ✔✔Variable selection
process that starts with all variables and then iteratively removes the
least-immediately-relevant variables from the model.
Balanced Design - CORRECT ANSWERS ✔✔Set of combinations of
factor values across multiple factors, that has the same number of
runs for all combinations of levels of one or more factors.
Balking - CORRECT ANSWERS ✔✔An entity arrives to the queue,
sees the size of the line (or some other attribute), and decides to leave
the system.
