Multi-Touch Attribution (MTA) Frameworks (Markov Chain Removal Effects & Cooperative Game-Theoretic Shapley Values) evaluate the marginal fractional contribution of diverse marketing touchpoints (Search, Social, Display, Email, Influencer) along the customer conversion journey; Rule-based attribution (Last-Touch, First-Touch, Linear) introduces severe heuristic bias; Algorithmic Attribution includes: 1) Markov Chain Attribution via Removal Effects: modeling touchpoint paths as absorbing state transition probability matrices
P; computing the fractional drop in overall system conversion probability when channel
i is removed (
Ri=1−P(Conversion with All)P(Conversion w/o i)) to apportion credit; 2) Shapley Value Attribution: calculating average marginal contributions across all
2N combinatorial coalition subsets satisfying axiomatic game-theoretic fairness (efficiency, symmetry, additivity).