Selecting basis functions to form a regression model for cache performance
US7346736B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2005 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Jun 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/601
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a system that selects bases to form a regression model for cache performance. During operation, the system receives empirical data for a cache rate. The system also receives derivative constraints for the cache rate. Next, the system obtains candidate bases that satisfy the derivative constraints. For each of these candidate bases, the system: (1) computes an aggregate error E incurred using the candidate basis over the empirical data; (2) computes an instability measure I of an extrapolation fit for using the candidate basis over an extrapolation region; and then (3) computes a selection criterion F for the candidate basis, wherein F is a function of E and I. Finally, the system minimizes the selection criterion F across the candidate bases to select the basis used for the regression model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.