Revising Hull and Box Consistency

Revising hull and box

Exploiting Monotonicity in Interval Constraint Propagation

We propose in this paper a new interval constraint propagation algorithm, called MOnotonic Hull Consistency (Mohc), that exploits monotonicity of functions. The propagation is standard, but the Mohc-Revise procedure, used to filter/contract the variable domains w.r.t. an individual constraint, uses monotonic versions of the classical HC4-Revise and BoxNarrow procedures. Mohc-Revise appears to b...

Exploitation de la monotonie des fonctions dans la propagation de contraintes sur intervalles

We propose a new interval constraint propagation algorithm, called MOnotonic Hull Consistency (Mohc), that exploits monotonicity of functions. The propagation is standard, but the Mohc-Revise procedure, used to filter/contract the variable domains w.r.t. an individual constraint, uses monotonic versions of the classical HC4Revise and BoxNarrow procedures. Mohc-Revise appears to be the first ada...

An Interval Constraint Propagation Algorithm Exploiting Monotonicity

When a function f is monotonic w.r.t. x in a given box, it is well-known that the monotonicity-based interval extension of f computes a sharper image than the natural interval extension does. Indeed, the overestimation due to the variable x with multiple occurrences in f disappears. However, monotonicity has not been exploited in interval filtering/contraction algorithms for solving systems of ...

Investigation of stepped planning hull hydrodynamics using computational fluid dynamics and response surface method

The use of step at the bottom of the hull is one of the effective factors in reducing the resistance and increasing the stability of the Planning hull. The presence of step at the bottom of this type of hulls creates a separation in the flow, which reduces the wet surface on the hull, thus reducing the drag on the body, as well as reducing the dynamic trim. In this study, a design space was cre...