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8. Building Price Models > Using Real Data—the eBay API

Using Real Data—the eBay API

eBay is an online auction site and one of the most popular sites on the Internet. It has millions of listings and millions of users bidding and jointly setting prices, making it a great example of collective intelligence. As it happens, eBay also has a free XML-based API that you can use to perform searches, get detailed item information, and even post items for sale. In this section, you’ll see how to use the eBay API to get price data and convert the data so that the algorithms in this chapter can be used for prediction.

Getting a Developer Key

The process of accessing eBay’s API takes several steps, but it’s relatively simple and automatic. A good overview of the process is in the Quick Start Guide, which is online at http://developer.ebay.com/quickstartguide.


  

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