Octane: A New Heuristic for Pure 0-1 Programs
نویسندگان
چکیده
We propose a new heuristic for pure 0–1 programs, which finds feasible integer points by enumerating extended facets of the octahedron, the outer polar of the unit hypercube. We give efficient algorithms to carry out the enumeration, and we explain how our heuristic can be embedded in a branch-and-cut framework. Finally, we present computational results on a set of pure 0–1 programs taken from MIPLIB and other sources.
منابع مشابه
AND/OR Branch-and-Bound Search for Pure 0/1 Integer Linear Programming Problems
AND/OR search spaces have recently been introduced as a unifying paradigm for advanced algorithmic schemes for graphical models. The main virtue of this representation is its sensitivity to the structure of the model, which can translate into exponential time savings for search algorithms. In this paper we extend the recently introduced AND/OR Branch-and-Bound algorithm (AOBB) [1] for solving p...
متن کاملA Feasibility Pump and Local Search Based Heuristic for Bi-objective Pure Integer Linear Programming
We present a new heuristic algorithm to approximately generate the nondominated frontier of bi-objective pure integer linear programs. The proposed algorithm employs a customized version of several existing algorithms in the literature of both single-objective and bi-objective optimization. Our proposed method has two desirable characteristics: (1) There is no parameter to be tuned by users oth...
متن کاملOn Extending Two Threshold 3 - SAT Algorithms to Non - ThresholdAlgorithms by Attaching the Unit Clause
Many of the proofs of lower-bounds on the conjectured satissability threshold value, c , for 3-SAT are based on probabilistic analyses of \iterative Davis-Putnam style" algorithms (IDPS algorithms) or slight modiications of IDPS algorithms 4], 5], 1], 9]. Let PSAT A (m; n; 3) denote the probability that algorithm A nds a satisfying truth assignment for a randomly generated instance (by the xed ...
متن کاملDetailed kinetic models for the low-temperature auto-ignition of gasoline surrogates
In the context of the search for gasoline surrogates for kinetic modeling purpose, this paper describes a new model for the low-temperature auto-ignition of n-heptane/iso-octane/hexene/toluene blends for the different linear isomers of hexene. The model simulates satisfactory experimental results obtained in a rapid compression machine for temperatures ranging from 650 to 850 K in the case of b...
متن کاملNew approach to the preparation of bicyclo octane derivatives via the enantioselective cascade reaction catalyzed by chiral diamine-Ni(OAc)2 complex.
A highly efficient catalyst system assembled from enantiomerically pure diaminocyclohexane and Ni(OAc)(2) is, for the first time, used to catalyze the cascade Michael-Henry reaction of various diones and substituted nitroalkenes. A series of polyfunctionalized bicyclo[3.2.1]octane derivatives containing four stereogenic centers are prepared with excellent enantioselectivities (up to >99% ee) an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Operations Research
دوره 49 شماره
صفحات -
تاریخ انتشار 2001