title: Classification with numerical label?
body: <p>I know of a couple of classification algorithms such as decision trees, but I can't use any of them to the problem I have at hands.</p>
  
  <p>I have a dataset in which each row contains information about a purchase. It's columns are:</p>
  
  <pre><code>- customer id
  - store id where the purchase took place
  - date and time of the event
  - amount of money spent
  </code></pre>
  
  <p>I'm trying to make a prediction that, given the information of who, where and when, predicts how much money is going to be spent.</p>
  
  <p>What are some possible ways of doing this? Are there any well-known algorithms?</p>
  
  <p>Also, I'm currently learning RapidMiner, and I'm experimenting with some of its features. Everything that I've tried there doesn't allow me to have a real number (amount spent) as a label. Maybe I'm doing something wrong?</p>