# Difference between revisions of "2020 Cornell Optimization Open Textbook Feedback"

## Duality

• Theory, methodology, and/or algorithmic discussions
1. Remove colon in the subsection title

## Simplex algorithm

• Theory, methodology, and/or algorithmic discussions
• References

## Computational complexity

• Theory, methodology, and/or algorithmic discussions
• At least one numerical example
1. Finding subsets of a set is not O(2^n).
• A section to discuss and/or illustrate the applications
1. The applications mentioned need to be discussed further.

## Network flow problem

• At least one numerical example
1. There is NO need to include code. Simply mention how the problem was coded along with details on the LP solver used.
2. The subsection title style should be consistent.

## Interior-point method for LP

• An introduction of the topic
1. Fix typos “where A ε R”
2. Please type “minimize” and “subject to” in formal optimization problem form throughout the whole page.
• At least one numerical example
1. The numerical example does not use any Newton’s method iterations that are presented in the above section. Please consider using a complicated example that actually uses Newton’s iterations.
2. Please type the maximization problem in LaTex form.
• A section to discuss and/or illustrate the applications
1. Please double check typos and extra spaces.

## Optimization with absolute values

• An introduction of the topic
1. Add few sentences on how absolute values convert optimization problem into a nonlinear optimization problem.
• Theory, methodology, and/or algorithmic discussions
1. Please add more details to absolute values in nonlinear optimization. (very important!)
• A section to discuss and/or illustrate the applications
1. Inline equations at the beginning of this section are not formatted properly. Please fix the notation for expected return throughout the section.

## Quasi-Newton methods

• Theory, methodology, and/or algorithmic discussions
1. Please ensure that few spaces are kept between the equations and equation numbers.
2. Step 6 of DFP algorithm should use the same variable M as in equation 1.14.

## Eight step procedures

• At least one numerical example
1. Please be consistent in the formatting of mathematical notations and equations.
• References
1. Lecture notes may not be a credible reference. Please find the original source.

## Set covering problem

• Theory, methodology, and/or algorithmic discussions
1. Use proper math notations for “greater than equal to”.
• At least one numerical example
1. Since Table 3 provides information on aij required to formulate the constraints, Table 2 serves no purpose and should be removed from the Wiki. Table 3 can be directly generated from Table 1.
2. The numerical example is solved manually without using greedy method nor LP solution method. Please solve this example both by the presented greedy algorithm and the newly added LP-based method and finally compare solutions.
3. Please leave some space between equation and equation number.

• Theory, methodology, and/or algorithmic discussions
1. Discuss dynamic programming and cutting plane solution techniques briefly.
• A section to discuss and/or illustrate the applications
1. Please format the equation for definition of yij in the hospital layout subsection.

## Newsvendor problem

• Theory, methodology, and/or algorithmic discussions
1. A math programming formulation of the optimization problem with objective function and constraints is expected for the formulation. Please add any variant of the newsvendor problem along with some operational constraints.
2. A mathematical presentation of the solution technique is expected. Please consider any distribution for R  and present a solution technique for that specific problem.

## Mixed-integer cuts

• A section to discuss and/or illustrate the applications
1. MILP and their solution techniques involving cuts are extremely versatile. Yet, only two sentences are added to describe their applications. Please discuss their applications, preferably real-world applications, in brief. Example Wikis provided on the website could be used as a reference to do so.

## Column generation algorithms

• An introduction of the topic
1. References at the end of the sentence should be placed after the period.
• Theory, methodology, and/or algorithmic discussions
1. Some minor typos/article agreement issues exist “is not partical in real-world”.
2. Referencing subtitle "Methodology" is not a formal way.

## Heuristic algorithms

• Theory, methodology, and/or algorithmic discussions
1. Please use proper symbol for "greater than or equal to".
2. Greedy method to solve minimum spanning tree seems to be missing.

## Branch and cut

• Theory, methodology, and/or algorithmic discussions
1. Equation in most infeasible branching section is not properly formatted, please fix the same.
3. Step 5 contains latex code terms that are not properly formatted. Please fix the same.
4. Fix typos:  e.g., repeated “for the current”, men Problem can viewed as partially” ..

## Convex generalized disjunctive programming (GDP)

• An introduction of the topic
1. Please refrain from defining the same abbreviations multiple times.
2. Please use abbreviations throughout the page if they have been defined.
• At least one numerical example
1. There is a duplicate figure.

## Fuzzy programming

• An introduction of the topic
1. References at the end of the sentence should be placed after the period.
• At least one numerical example
1. The numeric example should be before the applications section.
• A section to discuss and/or illustrate the applications
1. Applications of fuzzy programming are quite versatile. Please discuss few of the mentioned applications briefly. The provided example Wikis can be used as a reference to write this section.
• References
1. Please consider linking the references by using this as Wiki template, https://optimization.cbe.cornell.edu/index.php?title=Quantum_computing_for_optimization

• Theory, methodology, and/or algorithmic discussions
1. Please check typos such as "Let u bee a vector".
2. The abbreviation KKT is not previously defined.

• At least one numerical example
1. Amount of whitespace can be reduced by changing orientation of example dataset by converting it into a table containing 3 rows and 6 columns.
• A section to discuss and/or illustrate the applications
1. Deep learning can become a subsection on its own.

## RMSProp

• An introduction of the topic
1. References at the end of the sentence should be placed after the period.
• Theory, methodology, and/or algorithmic discussions
1. Please check grammar in this section.
• A section to discuss and/or illustrate the applications
1. The applications section does not contain any discussion on applications. Please mention a few applications of the widely used RMSprop and discuss them briefly.
2. Please check grammar in this section.
• References
1. Please refer to the example Wikis provided to use proper citation style.
2. Please consider linking the references by using this as Wiki template, https://optimization.cbe.cornell.edu/index.php?title=Quantum_computing_for_optimization