Remark. Scalar returns and multiple evaluation quantities [ftip-006N]
Remark. Scalar returns and multiple evaluation quantities [ftip-006N]
Sutton and Barto define scalar episodic return in [sutton2018reinforcement, Section 3.3]. Benchmarks also use exact-match, test, latency, safety, and cost measurements. A proposed seeded vector utility keeps those coordinates separate, with evaluator randomness included in the declared law.
The vector is not a claim that its coordinates share a natural scale. Scalarization, Pareto order, and worst-group summaries are introduced only after the attainable evaluation set is defined.