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A new variable step-size adaptive based on Sigmoid function
Dianzi Jishu YingyongAiming at the contradiction between the convergence speed and the steady state error of the fixed step size least mean square(LMS) algorithm, a novel variable step-size algorithm is proposed. The algorithm is based on the Sigmoid function and establishes
Wu Yifan, Ma Lingkun, Yan Meiyi
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A Variable Step Size Riemannian Sum for an Itô Integral [PDF]
Journal of Applied Probability, 2008 We investigate the problem of using a Riemannian sum with random subintervals to approximate the iterated Itô integral ∫wdw - or, equivalently, solving the corresponding stochastic differential equation by Euler's method with variable step sizes. In the past this task has been used as a counterexample to illustrate that variable step sizes must be used
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Wilms tumor (WT) treatment imposes a significant time burden on patients and their families. Time toxicity is a patient‐centered metric that quantifies the burden of healthcare interaction. We sought to define time toxicity in the first year after diagnosis of WT and hypothesized that it would increase as tumor stage and treatment ...
Caleb Q. Ashbrook +6 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási +14 more
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Mean-square convergence of stochastic multi-step methods with variable step-size
, 2008 We study mean-square consistency, stability in the mean-square sense and mean-square convergence of drift-implicit linear multi-step methods with variable step-size for the approximation of the solution of Itô stochastic differential equations. We obtain
Sickenberger, Thorsten
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Improved variable step-size LMS algorithm based on hyperbolic tangent function
Tongxin xuebao, 2020 In order to improve that the LMS algorithm for determining step size cannot satisfy both rapid convergence and low steady-state misalignment errors,a variable step size algorithm (IVSSLMS) based on an improved hyperbolic tangent function was proposed.The
Jianwu ZHANG, Hao YU, Qianhua ZHANG
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Novel LMS adaptive filtering algorithm with variable step size
Journal of Measurement Science and Instrumentation, 2012 By analyzing algorithms available for variable step size least mean square（LMS）adaptive filter,a new modified LMS adaptive filtering algorithm with variable step size is proposed,along with performance analysis based on different parameters.Compared with
LI Ji-ming +3 more
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Zhongguo Jianchuan Yanjiu, 2021 ObjectiveIn order to improve the charging efficiency, safety and speed of mobile online photovoltaic (PV) charging devices, a type of mobile online PV charging maximum power point tracking (MPPT) technology based on the variable step size disturbance ...
Jiajun GAO +4 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Immune effector cell‐associated hemophagocytic lymphohistiocytosis‐like syndrome (IEC‐HS) is a life‐threatening hyperinflammatory toxicity distinct from cytokine release syndrome (CRS) and neurotoxicity following chimeric antigen receptor T‐cell (CAR‐T) therapy. In a single‐institution retrospective cohort of pediatric and young adult patients
Thomas J. Galletta +6 more
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, 2019 This letter proposes a variable step-size (VSS) affine projection algorithm (APA) associated with a step-size scaler to improve the APA's robustness against impulsive measurement noise. In the proposed VSS APA, the step-size scaler is applied to the
Park, P, Song, Insun
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