Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).

# Message Passing Algorithm for the Generalized Assignment Problem

Abstract : The generalized assignment problem (GAP) is NP-hard. It is even APX-hard to approximate it. The best known approximation algorithm is the LP-rounding algorithm in [1] with a $(1-\frac{1}{e})$ approximation ratio. We investigate the max-product belief propagation algorithm for the GAP, which is suitable for distributed implementation. The basic algorithm passes an exponential number of real-valued messages in each iteration. We show that the algorithm can be simplified so that only a linear number of real-valued messages are passed in each iteration. In particular, the computation of the messages from machines to jobs decomposes into two knapsack problems, which are also present in each iteration of the LP-rounding algorithm. The messages can be computed in parallel at each iteration. We observe that for small instances of GAP where the optimal solution can be computed, the message passing algorithm converges to the optimal solution when it is unique. We then show how to add small deterministic perturbations to ensure the uniqueness of the optimum. Finally, we prove GAP remains strongly NP-hard even if the optimum is unique.
Document type :
Conference papers
Domain :

Cited literature [13 references]

https://hal.inria.fr/hal-01403111
Contributor : Hal Ifip Connect in order to contact the contributor
Submitted on : Friday, November 25, 2016 - 2:35:53 PM
Last modification on : Thursday, March 5, 2020 - 5:40:16 PM
Long-term archiving on: : Tuesday, March 21, 2017 - 7:34:20 AM

### File

978-3-662-44917-2_35_Chapter.p...
Files produced by the author(s)

### Citation

Mindi yuan, Chong Jiang, Shen Li, Wei Shen, yannis Pavlidis, et al.. Message Passing Algorithm for the Generalized Assignment Problem. 11th IFIP International Conference on Network and Parallel Computing (NPC), Sep 2014, Ilan, Taiwan. pp.423-434, ⟨10.1007/978-3-662-44917-2_35⟩. ⟨hal-01403111⟩

Record views