ESTIMATE FUNCTION – estimates c based on a, b, d. Not all of them are known all the time.

For the pseudocode of this prediction scheme click here.

CASES:

1. a & b & d are known

c’ = (a + b - d) (prediction)

2. a & d are known

c’ = a + (a - d) (prediction)

3. a & b are known

c’ = (a + b) / 2 (prediction)

4. a is known

c’ = a (prediction)

5. b is known

c’ = a (prediction)

6. nothing is known

c’ = c (prediction)