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- W4311595088 abstract "In this paper, we propose new linearly convergent second-order methods for minimizing convex quartic polynomials. This framework is applied for designing optimization schemes, which can solve general convex problems satisfying a new condition of quartic regularity. It assumes positive definiteness and boundedness of the fourth derivative of the objective function. For such problems, an appropriate quartic regularization of Damped Newton Method has global linear rate of convergence. We discuss several important consequences of this result. In particular, it can be used for constructing new second-order methods in the framework of high-order proximal-point schemes. These methods have convergence rate $tilde O(k^{-p})$, where $k$ is the iteration counter, $p$ is equal to 3, 4, or 5, and tilde indicates the presence of logarithmic factors in the complexity bounds for the auxiliary problems, which are solved at each iteration of the schemes." @default.
- W4311595088 created "2022-12-27" @default.
- W4311595088 creator A5067792459 @default.
- W4311595088 date "2022-01-13" @default.
- W4311595088 modified "2023-09-26" @default.
- W4311595088 title "Quartic Regularity" @default.
- W4311595088 doi "https://doi.org/10.48550/arxiv.2201.04852" @default.
- W4311595088 hasPublicationYear "2022" @default.
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