Category Archives: Challenges

Challenge Dec-2025 “Inside/Outside Production”

Posted on November 27, 2025 by decisionmanagementcommunity

You need to help a manufacturer decide how much of each demanded product should be produced internally and how much should be sourced from outside. Whether a product is made inside or outside, it has an associated cost. A product … Continue reading →

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Challenge Nov-2025 “Advanced Website Design”

Posted on November 15, 2025 by decisionmanagementcommunity

This challenge is an advanced version of last month’s Challenge Oct-2025, when a freelance developer needs to design a website with as many features as possible, but also maximizing the total value of the selected features. Now you have several additional … Continue reading →

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Solutions for Oct-2025 Challenge “Decision with two objectives”

Posted on November 13, 2025 by jacobfeldman

DMCommunity.org has already received five solutions for its Oct-2025 Challenge, which asks to help a web designer to select certain website features while satisfying budget and value constraints. What makes this simple problem interesting is that it involves two conflicting … Continue reading →

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Challenge Oct-2025 “Decision with two objectives”

Posted on October 19, 2025 by decisionmanagementcommunity

This challenge is offered by Dr. Meinolf Sellmann. A freelance webpage developer received a task. A client has a budget of $10,000 and wants a webpage developed with as many features as possible while maximizing the total value of these features. … Continue reading →

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Constraint Modeling Challenge

Posted on August 19, 2025 by decisionmanagementcommunity

The annual MiniZinc Challenge celebrates the state of the art in constraint modelling and solving. Across the different problems, this year’s result once again highlighted the diversity of approaches, pushing the boundaries of what’s possible in modelling and solving complex problems. Here are … Continue reading →

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Challenge Aug-2025 “Grid Covering”

Posted on August 3, 2025 by decisionmanagementcommunity

This month, we offered our readers to ponder a problem that was among the most complex on the 2025 International Mathematical Olympiad. This problem did stump DeepMind and OpenAI’s models, but it wasn’t just problematic for AI. Of the 630 student … Continue reading →

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Interesting Kaddle Competition

Posted on July 28, 2025 by decisionmanagementcommunity

Markets don’t always stick to the plan. Like a sudden shift in the weather, price swings can throw off even the best predictions. Investors and businesses need models that can keep up, but many struggle to adapt when past trends … Continue reading →

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Collapse of Reasoning Models?

Posted on June 8, 2025 by decisionmanagementcommunity

Apple’s ML scientists put to the test the latest “reasoning” models, like Claude, DeepSeek-R1, and o3-mini. They made these models solve classic puzzles: Tower of Hanoi, Checker Jumping, River Crossing, and Blocks World. Their findings “reveal fundamental limitations in current … Continue reading →

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Challenge May-2025 “Risky Stocks”

Posted on May 1, 2025 by jacobfeldman

You need to create a decision service that decides whether to buy certain stocks or not. Here are the guiding rules:Rule 1: Stock in debt is considered risky.Rule 2: Stocks in fusion with other stocks may be risky.Rule 3: Stock … Continue reading →

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Challenge April-2025 “Case Assignments”

Posted on April 2, 2025 by decisionmanagementcommunity

An analytical firm assigns different cases to its analysts using the following rules: Given a list of analysts with their current workload and a list of new cases, you need to help the firm to decide which analysts should be … Continue reading →

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