 # Complexity Explorer Santa Few Institute ## Maximum Entropy Methods

• Introduction to Maximum Entropy Methods
• MaxEnt Applied to the Taxicab Example, Part 1
• MaxEnt Applied to the Taxicab Example, Part 2
• Review of MaxEnt
• A Real-World Example: Modeling the Open Source Ecosystem, Part 1
• Modeling the Open Source Ecosystem, Part 2
• Modeling the Open Source Ecosystem, Part 3
• A Second Real-World Example: Modeling Sears-Roebuck Catalog Prices, Part 1
• Modeling Sears-Roebuck Catalog Prices, Part 2
• Conclusion
• Homework

#### 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.