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Mantis - ALGLIB
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| ID: | Category: | Severity: | Reproducibility: | Date Submitted: | Last Update: |
| 419 | Linear algebra | minor | have not tried | 2011-12-22 11:52 | 2011-12-22 11:53 |
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| Reporter: | SergeyB | Platform: | |||
| Assigned To: | SergeyB | OS: | |||
| Priority: | normal | OS Version: | |||
| Status: | resolved | Product Version: | |||
| Product Build: | Resolution: | fixed | |||
| Projection: | none | ||||
| ETA: | none | Fixed in Version: | 3.5.0 | ||
| Programming language: | Unspecified | ||||
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| Summary: | 0000419: FIXED: inconvergence of the low-accuracy version of bidiagonal SVD | ||||
| Description: |
Bidiagonal QR SVD provided by LAPACK has two version - high accuracy but slow one (TOL>0), and moderate accuracy but quick one (TOL<0). Quick version in some very rare circumstances fails to converge. Currently it is unknown whether it is bug or intrinsic property of the algorithm. In order to make all SVD-dependent algorithms more stable quick version is silently replaced by the slower, but more robust one. |
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| Issue History | |||||
| Date Modified | Username | Field | Change | ||
| 2011-12-22 11:52 | SergeyB | New Issue | |||
| 2011-12-22 11:52 | SergeyB | Status | new => assigned | ||
| 2011-12-22 11:52 | SergeyB | Assigned To | => SergeyB | ||
| 2011-12-22 11:52 | SergeyB | Programming language | => Unspecified | ||
| 2011-12-22 11:53 | SergeyB | Status | assigned => resolved | ||
| 2011-12-22 11:53 | SergeyB | Fixed in Version | => 3.5.0 | ||
| 2011-12-22 11:53 | SergeyB | Resolution | open => fixed | ||
| There are no notes attached to this issue. |