We study a concept in multicriteria optimization called compromise solutions (introduced in 1973 by Yu [20]) and a generalized version of this, termed reference point solutions. Our main result shows the power of this concept: Approximating reference point solutions is polynomially equivalent to constructing an approximate Pareto set as in [16]. A reference point solution is the solution closes...

Fish populations with spatial structure inherently violate the assumption of a single well-mixed stock, necessitating use spatially-structured population dynamics models. Accounting for accurately and easily is major goal next generation stock assessment software development. Reference points (e.g., limit or target harvest rates their associated biomass) are inherent to assessments often calcul...

This study examined the effects of two variables on spatial learning: the objects’ array (with or without a central reference point) and the learning method (virtual walk through or seeing still images). After learning the objects’ locations and their positional relations in a virtual room in egocentric reference frames, participants judged the directions to a target from an imaginary position ...