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Introduction to Maximum Entropy Methods
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A Simple Example: Waiting for a Taxicab
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The Maximum Entropy Method
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MaxEnt Applied to the Taxicab Example, Part 1
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MaxEnt Applied to the Taxicab Example, Part 2
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Review of MaxEnt
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A Real-World Example: Modeling the Open Source Ecosystem, Part 1
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Modeling the Open Source Ecosystem, Part 2
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Modeling the Open Source Ecosystem, Part 3
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A Second Real-World Example: Modeling Sears-Roebuck Catalog Prices, Part 1
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Modeling Sears-Roebuck Catalog Prices, Part 2
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Conclusion
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10.1 A Second Real-World Example: Modeling Sears-Roebuck Catalog Prices, Part 1 » Quiz Solution
1. The answer is c. In the video, the plots Simon shows all use x = log price, so the problem here is the find the maximum entropy distribution P of the log of the price.
2. The answer is b. The <x> term comes from the second term in the sum in the exponent, and the <x2> term comes from the first term in the sum in the exponent. The third term in the sum comes from the constraint that the distribution sums to 1.