Continuous Valued Attributes?

• dynamically creating new discrete valued attributes that is true if
  1. sort examples according to the continuous attribute value
  2. Identify adjacent examples that differ in their target classifications
  3. Generate candidate threshold midway between these points
  4. Calculate the information gain of each candidate and pick best
  5. dynamically created boolean attributes competes with others to appear in tree
• The value of c that maximizes information gain must be one of these points
• many other approaches