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Reflections on Operations Research

Reflections on Operations Research. About Us and Our Blog. Maximizing the Path Through a Triangle. September 5, 2012. A coworker recently introduced me to Project Euler. The problem that prompted me to check out the site is to maximize the path through a triangle comprised of numbers, starting at the top and moving down the rows of the triangle through adjacent numbers. The site gives a triangle with a base of four numbers as an example (below). The first problem triangle ( Problem 18. 1 not adjacent to.

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Reflections on Operations Research | reflectionsonor.wordpress.com Reviews

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Reflections on Operations Research. About Us and Our Blog. Maximizing the Path Through a Triangle. September 5, 2012. A coworker recently introduced me to Project Euler. The problem that prompted me to check out the site is to maximize the path through a triangle comprised of numbers, starting at the top and moving down the rows of the triangle through adjacent numbers. The site gives a triangle with a base of four numbers as an example (below). The first problem triangle ( Problem 18. 1 not adjacent to.

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Reflections on Operations Research | reflectionsonor.wordpress.com Reviews

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Reflections on Operations Research. About Us and Our Blog. Maximizing the Path Through a Triangle. September 5, 2012. A coworker recently introduced me to Project Euler. The problem that prompted me to check out the site is to maximize the path through a triangle comprised of numbers, starting at the top and moving down the rows of the triangle through adjacent numbers. The site gives a triangle with a base of four numbers as an example (below). The first problem triangle ( Problem 18. 1 not adjacent to.

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Reflections on Operations Research | Page 2

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Reflections on Operations Research. About Us and Our Blog. Newer posts →. Optimizing Your Transportation Network can Reduce Your Carbon Footprint. October 1, 2011. 8220; Or have I? Can even help a company calculate the reduction in their carbon footprint as a direct result of their optimization efforts. Whether directly modeled in the objective or a by-product of other goals, companies can have a positive impact on the environment through the use of optimization and that benefits everyone. May 31, 2011.

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Piecewise Linear Objective Functions in Mathematical Models | Reflections on Operations Research

https://reflectionsonor.wordpress.com/2012/07/14/piecewise-linear-objective-functions-in-mathematical-models

Reflections on Operations Research. About Us and Our Blog. User Experience and Optimization. Ant Colony Optimization – Coded and Testing →. Piecewise Linear Objective Functions in Mathematical Models. July 14, 2012. Sometimes when formulating a LP or MIP, you run into the scenario where it is better to have several small occurrences of a bad event (or good event) rather than a single, larger occurrence. Consider a basic machine scheduling problem of scheduling. Tasks on a machine. Each task. Defines a pi...

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My New Year Resolution – Take a Second Look | Reflections on Operations Research

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Reflections on Operations Research. About Us and Our Blog. Optimizing Your Transportation Network can Reduce Your Carbon Footprint. Ant Colony Optimization – Optimizing the Search for Food →. My New Year Resolution – Take a Second Look. January 12, 2012. The first way to formulate a constraint is not always the best. Don’t use a bigger “Big M” than necessary. Re-examine the business requirement behind the constraint. These are just a few ways to improve model performance that I’ll keep in mind this...

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Additional Constraints Can Sometimes Help Performance | Reflections on Operations Research

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Reflections on Operations Research. About Us and Our Blog. Ant Colony Optimization – Optimizing the Search for Food. User Experience and Optimization →. Additional Constraints Can Sometimes Help Performance. February 15, 2012. Even seemingly innocuous constraints can cause problems when added to an already complicated MIP. This can lead to a fear of adding a new constraint to a functioning model. Be the number of prime shifts that worker. Has the right to based on his/her tenure and let. 8216;s and thus ...

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Robert Randall | Reflections on Operations Research

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Reflections on Operations Research. About Us and Our Blog. Author Archives: Robert Randall. User Experience and Optimization. July 6, 2012. As an Optimization Consultant, I spend most of my days working with clients and trying to build models and systems to meet their needs. In general, these are operational systems that run on command and the user sees the results … Continue reading →. Optimizing the House of Representatives. January 28, 2011. Does P ≠ NP Matter? August 11, 2010. June 3, 2010. Recently ...

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Social Networking - INFORMS

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Participate in a Community. Find Research and Publications. TutORials in Operations Research. Apply Operations Research and Analytics. Find an Analytics Consultant. Getting Started with Analytics. INFORMS Education Resource Library. INFORMS Today: The Podcast Series. Consider an Analytics/OR Career. Certification and Continuing Ed. INFORMS Prizes and Awards. Community Prizes and Awards. Join INFORMS and/or INFORMS Communities. Update Your Member Information. 2013 Attitudes About Analytics Survey. Highlig...

thequestforoptimality.com

exams

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About Me & This Blog. The Quest for Optimality. Using solvers and heuristics to solve complex problems. Posted on April 23, 2015. For students, the final exam week is probably the most stressful time of a semester. They often have multiple exams over consecutive days and need to split their last-minute study and preparation time over these topics. I must confess that I also feel some stress during this week. Here’s why. First, designing an exam is not so […]. Scattered thoughts from a scattered mind.

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forest products

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About Me & This Blog. The Quest for Optimality. Using solvers and heuristics to solve complex problems. When optimal is not enough. Posted on April 27, 2015. Scattered thoughts from a scattered mind. Daily Dose of Excel. OR: Models and Methods. Return to top of page. X000B7; Log in.

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The day I put my hand into the shredder

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About Me & This Blog. The Quest for Optimality. Using solvers and heuristics to solve complex problems. The day I put my hand into the shredder. The day I put my hand into the shredder. Posted on April 7, 2015. Edit: finally, we found a cleaner way to include backorders without being too messy. Still, we spent as much time dealing with backorders as we did for the rest of the model.]. About Marc-André Carle (ORNinja). Speak Your Mind Cancel reply. Helene Sarah Becotte's Blog. OR: Models and Methods.

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Performance Variability

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About Me & This Blog. The Quest for Optimality. Using solvers and heuristics to solve complex problems. Posted on March 26, 2015. If you work on difficult mixed-integer programming (MIP) models, you have experienced performance variability. This refers as the impact on performance of seemingly performance neutral changes induced in the model or the solver. Part 1 of this series presented the problem and its relevance, and part 2 provided some readings related to the topic. This […]. Distributed optimizat...

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OR in the field: two challenges

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About Me & This Blog. The Quest for Optimality. Using solvers and heuristics to solve complex problems. OR in the field: two challenges. OR in the field: two challenges. Posted on June 15, 2015. First, understand the problem. Second, build the right model. Quite often, a simple model is the right first model to build. Then add (or remove) complexity and features one at a time. About Marc-André Carle (ORNinja). Assistant Professor at Université Laval's business school. Supply chain design and agent-ba...

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MIP

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About Me & This Blog. The Quest for Optimality. Using solvers and heuristics to solve complex problems. Posted on March 26, 2015. If you work on difficult mixed-integer programming (MIP) models, you have experienced performance variability. This refers as the impact on performance of seemingly performance neutral changes induced in the model or the solver. Part 1 of this series presented the problem and its relevance, and part 2 provided some readings related to the topic. This […]. Distributed optimizat...

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Reflections on Operations Research

Reflections on Operations Research. About Us and Our Blog. Maximizing the Path Through a Triangle. September 5, 2012. A coworker recently introduced me to Project Euler. The problem that prompted me to check out the site is to maximize the path through a triangle comprised of numbers, starting at the top and moving down the rows of the triangle through adjacent numbers. The site gives a triangle with a base of four numbers as an example (below). The first problem triangle ( Problem 18. 1 not adjacent to.

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