Homework for Week 8
Math 408 Section A, February 23
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Reading Assignment:
- Optimality Conditions for Constrained Problems: Due Friday, February 6.
- Quadratic Programming Notes: Due Wednesday, February 25.
- Probability Notes: Due Monday, March 1
- Investment Science: Sec. 6.1-6.3, Due Wednesday, March 3.
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Homework Assignment:
- Quadratic Programming
- Do all of the exercises in the notes on
quadratic probramming.
- Be able to state both necessary and sufficient conditions
for optimality for a QP in standard form as specified
in the notes.
- Be able to transform any QP to one in standard form.
- Be able to transform a quadratic function into matrix form.
- Be able to determine if a 2X2
symmetric matrix is positive definite,
positive semi-definite, or neither.
- Be able to write down the KKT conditions for a concretely
specified QP.
- Be able to derive the KKT conditions for a general QP.
- Basic Probability
- Do all of the exercises in the notes on
probability.
- Be able to determine the pdf for a concretely specified random
variable.
- Be able to compute means, variances, and covariances for
concretely specified random variables.
- Be able to sketch the mean-standard deviation curve for two
concretely specified random
variables.
- Be able to derive the Cartesian formula for the hyperbola defining
the mean-standard deviation curve.
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Vocabulary List:
- Constrained Optimization
- feasible directions
- tangent cone
- regularity
- The Lagrangian
- first-order conditions for optimality
- KKT conditions (KKT pairs)
- second-order conditions for optimality
- first-order necessary and sufficient conditions under convexity
- convexity implies the local solutions are global solutions
- Quadratic Programming
- quadratic function
- symmetric matrix
- positive definite, positive semi-definite
- quadratic program
- QP standard form
- descent direction
- feasible direction
- first-order necessary conditions for optimality in QP
- first-order sufficient conditions for optimality in QP
- KKT conditions for QP
- Basic Probability
- Probability Space
- Random Variable
- Expectation operator
- mean, variance, covariance, standard deviation, correlation coefficient
- stochastic independence
- probability density function
- joint probability density function
- random vector
- covariance matrix
- mean-standard deviation curve
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Key Concepts:
- Constrained Optimization
- KKT conditions
- Second-order Optimality conditions.
- Convexity and it implications for optimality
- Quadratic Programming
- first- and second-order optimality conditions for QP
- KKT conditions
- Basic Probability
- probability space
- random variable
- expectation operator
- probability density function
- mean-standard deviation curve
- covariance matrix
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Skills to Master:
- Checking optimality conditions
- checking regularity
- checking convexity
- Writing a quadratic function in matrix form.
- Determine if a 2X2 symmetric matrix is positive definite,
positive semi-definite, or neither.
- computing the KKT conditions and finding KKT points.
- computing means, variances, standard deviations, covariances, and
correlation coefficients of random variable
- computing the pdf of a random variable
- computing the covariance matrix of a random vector
- graphing the mean-variance curve for two rvs
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Quiz:
The quiz will have two questions. The first will be a vocabulary
word from the notes on constrained optimization,
and the second will computational in nature similar to the
exercises at the end of these notes.