loss function

[yamins81]

1. Sum_i loss_i * gamma^i where gamma satisfies

        gamma^n > SUM_{i < n} gamma^i  ... which is a nontrivial condition (implies 1 < gamma )

        loss_i = loss of i-th pathway, where the pathways are ordered by length 

2. other possibilities with thresholds?

[marzCS]

This may have been mentioned before, but I'll note that the inequality fails for all n when 0 < gamma < 1, does not hold for all 1 < gamma < 2 (when n > 1), and holds for all n when gamma >= 2.