| Presentation | 2005-07-14 Approximations to Compute Failure Frequency of Telecommunications Networks Masahiro Hayashi, Takeo Abe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Factoring algorithm with reductions was recently proposed method for exactly computing failure frequencies of telecommunications networks. However, it has a limitation of computation time because the computation problem of failure frequency is known as NP hard. Another result show that the delta-star conversion is a high-speed approximation method but its application is strictly limited, because it needs a special topology expressed by triangle. To overcome these limitations, it is a reasonable idea of combining the factoring algorithm with reductions and delta-star conversion in a certain manner. Now, this paper first realizes this combined method to compute network failure frequency. We have implemented it on a workstation, and numerical examples show that this combined method realizes high-speed computation with high-accuracies. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Reliability / Availability / Failure frequency / Network / Delta-star conversion |
| Paper # | CQ2005-18 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2005/7/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Approximations to Compute Failure Frequency of Telecommunications Networks |
| Sub Title (in English) | |
| Keyword(1) | Reliability |
| Keyword(2) | Availability |
| Keyword(3) | Failure frequency |
| Keyword(4) | Network |
| Keyword(5) | Delta-star conversion |
| 1st Author's Name | Masahiro Hayashi |
| 1st Author's Affiliation | NTT Service Integration Laboratories, NTT Corporation() |
| 2nd Author's Name | Takeo Abe |
| 2nd Author's Affiliation | NTT Service Integration Laboratories, NTT Corporation |
| Date | 2005-07-14 |
| Paper # | CQ2005-18 |
| Volume (vol) | vol.105 |
| Number (no) | 179 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |