np-hard

3 dimensional bin packing algorithms

由 ↘锁芯ラ 提交于 2019-11-26 22:32:43
问题 I'm faced with a 3 dimensional bin packing problem and am currently conducting some preliminary research as to which algorithms/heuristics are currently yielding the best results. Since the problem is NP hard I do not expect to find the optimal solution in every case, but I was wondering: 1) what are the best exact solvers? Branch and Bound? What problem instance sizes can I expect to solve with reasonable computing resources? 2) what are the best heuristic solvers? 3) What off-the-shelf

What is the problem name for Traveling salesman problem(TSP) without considering going back to starting point?

由 ￡可爱￡侵袭症＋ 提交于 2019-11-26 16:05:31
问题 I would like to know what is the problem name for TSP w/o considering the way of going back to starting point and what is the algorithm to solve this. I looked into Shortest path problem but that is not what I am looking for, the problem only find the shortest path from 2 assigned points. But what I am looking for is the problem which we give n points and inputting only 1 starting point. Then, find the shortest path traveling all points exactly once. (end point can be any point.) I also

What are the differences between NP, NP-Complete and NP-Hard?

由 倖福魔咒の 提交于 2019-11-26 02:18:31
What are the differences between NP , NP-Complete and NP-Hard ? I am aware of many resources all over the web. I'd like to read your explanations, and the reason is they might be different from what's out there, or there is something that I'm not aware of. jason I assume that you are looking for intuitive definitions, since the technical definitions require quite some time to understand. First of all, let's remember a preliminary needed concept to understand those definitions. Decision problem : A problem with a yes or no answer. Now, let us define those complexity classes . P P is a

What are the differences between NP, NP-Complete and NP-Hard?

由 纵饮孤独 提交于 2019-11-26 01:50:03
问题 What are the differences between NP , NP-Complete and NP-Hard ? I am aware of many resources all over the web. I\'d like to read your explanations, and the reason is they might be different from what\'s out there, or there is something that I\'m not aware of. 回答1: I assume that you are looking for intuitive definitions, since the technical definitions require quite some time to understand. First of all, let's remember a preliminary needed concept to understand those definitions. Decision
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