| Project/Area Number |
19700013
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fundamental theory of informatics
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| Research Institution | Tokyo Woman's Christian University (2008-2010)
Waseda University (2007) |
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Principal Investigator |
OGITA Takeshi Tokyo Woman's Christian University, 現代教養学部, 准教授 (00339615)
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| Project Period (FY) |
2007 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥3,630,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥630,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | 情報数理 / 数値線形代数 / 数値計算 / 精度保証 / 高精度計算 / 精度保証付き数値計算 |
|---|
| Research Abstract |
Solving systems of linear equations on computers is ubiquitous in scientific computing. Since numerical computations involve rounding errors, approximate solutions of the systems are obtained. Therefore, it is important to evaluate how accurate the approximate solutions are. In this research, methods of evaluating the accuracy of approximate solutions of large-scale systems of linear equations have been developed with introducing fast and accurate algorithms for calculating dot products, even if the solving problems are ill-conditioned.
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