“…He empirically shows that derivatives-based EIFs are those that have the risk profile most closely resembling that of the benchmark. Note that many of the index fund studies [5,33,18,46,55,66,76,80,92] use heuristic methods and model the future asset returns as deterministic parameters. The presence of a cardinality constraint and integer variables, a key feature and source of complexity for the partial replication index problem, arise in other types of financial optimization problems (see, e.g., [9,15,21,47]).…”