Results 21 to 30 of about 186,103 (266)
Stratifying Quotient Stacks and Moduli Stacks [PDF]
, 2018 Recent results in geometric invariant theory (GIT) for non-reductive linear algebraic group actions allow us to stratify quotient stacks of the form [X/H], where X is a projective scheme and H is a linear algebraic group with internally graded unipotent radical acting linearly on X, in such a way that each stratum [S/H] has a geometric quotient S/H ...
Berczi, G, Hoskins, V, Kirwan, F
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Frontiers in Cardiovascular Medicine, 2023 BackgroundHypertension is a major public health problem, and its resulting other cardiovascular diseases are the leading cause of death worldwide. In this study, we constructed a convenient and high-performance hypertension risk prediction model to ...
Shuang Guo +8 more
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Interpreting uninterpretable predictors: kernel methods, Shtarkov solutions, and random forests
Statistical Theory and Related Fields, 2022 Many of the best predictors for complex problems are typically regarded as hard to interpret physically. These include kernel methods, Shtarkov solutions, and random forests.
T. M. Le, Bertrand Clarke
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IEEE Access, 2021 The selection of a meta-learner determines the success of a stacked ensemble as the meta-learner is responsible for the final predictions of the stacked ensemble.
Seng Zian +2 more
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Power Optimization for Wind Turbines Based on Stacking Model and Pitch Angle Adjustment
Energies, 2020 As we know, power optimization for wind turbines has great significance in the area of wind power generation, which means to make use of wind resources more efficiently.
Zhikun Luo +4 more
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Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi)Despite being in high demand as a lifelong learner and academic material supplement, the implementation of Massive Open Online Courses (MOOC) has problems, one of which is the dropout rate (DO) of students, which reaches 93%.
Muhammad Ricky Perdana Putra, Ema Utami
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IEEE Access, 2021 Ensemble learning method is a collaborative decision-making mechanism that implements to aggregate the predictions of learned classifiers in order to produce new instances. Early analysis has shown that the ensemble classifiers are more reliable than any
Sapna Singh Kshatri +5 more
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MOTIVIC INVARIANTS OF ARTIN STACKS AND 'STACK FUNCTIONS' [PDF]
The Quarterly Journal of Mathematics, 2007 An invariant I of quasiprojective K-varieties X with values in a commutative ring R is "motivic" if I(X)= I(Y)+I(X\Y) for Y closed in X, and I(X x Y)=I(X)I(Y). Examples include Euler characteristics chi and virtual Poincare and Hodge polynomials. We first define a unique extension I' of I to finite type Artin K-stacks F, which is motivic and satisfies ...
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Sleep Posture Recognition Method Based on Sparse Body Pressure Features
Applied SciencesNon-visual techniques for identifying sleep postures have become essential for enhancing sleep health. Conventional methods depend on a costly professional medical apparatus that is challenging to adapt for domestic use.
Changyun Li, Guoxin Ren, Zhibing Wang
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IEEE Open Journal of Power Electronics, 2021 The voltage rating of the commercial Gallium Nitride (GaN) power devices are limited to 600/650 V due to the lateral structure. Stacking the low-voltage rating devices is a straightforward approach to block higher dc link voltage. However, the unbalanced
Zhengda Zhang +5 more
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