Complexity Explorer Santa Few Institute

Maximum Entropy Methods

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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.