Results 31 to 40 of about 12,339 (203)

Unbiased Isotonic Regression Tree for Discovering Hidden Heterogeneity in Monotonicity Constraints

open access: yesApplied Sciences
Integrating domain knowledge is increasingly recognized as vital for improving the relevance and reliability of machine learning models. This integration is often implemented through specific types of constraints that reflect real-world conditions or ...
Doowon Choi
doaj   +1 more source

CVXR: An R Package for Disciplined Convex Optimization

open access: yesJournal of Statistical Software, 2020
CVXR is an R package that provides an object-oriented modeling language for convex optimization, similar to CVX, CVXPY, YALMIP, and Convex.jl. It allows the user to formulate convex optimization problems in a natural mathematical syntax rather than the ...
Anqi Fu   +2 more
doaj   +1 more source

Isotonic regression analysis of Guzerá cattle growth curves

open access: yesRevista Ceres
The objective of this study was to apply data transformation via isotonic regression in growth curves studies of Guzerá cattle whose data presented disturbances characterized by decreased body weight in certain age groups.
Adriano Rodrigues   +5 more
doaj   +1 more source

Multiple Isotonic Median Regression

open access: yesThe Annals of Statistics, 1973
We consider the partial order on the unit square; $s_1 = (x_1, y_1) \ll s_2 = (x_2, y_2)$ if and only if $x_i \leqq y_i$ for $i = 1, 2$, and say that a real-valued function $f$ is isotone if $s_1 \ll s_2$ implies that $f(s_1) \leqq f(s_2)$. Suppose that for each point, $s$, in the unit square we have a distribution with median $m(s)$ and $m(s)$ is ...
Robertson, Tim, Wright, F. T.
openaire   +2 more sources

Isotonic and Convex Regression: A Review of Theory, Algorithms, and Applications

open access: yesMathematics
Shape-restricted regression provides a flexible framework for estimating an unknown relationship between input variables and a response when little is known about the functional form, but qualitative structural information is available. In many practical
Eunji Lim
doaj   +1 more source

Determining the Minimum Effective Concentration of Ropivacaine in Epidural Anesthesia for Tolerable Pain in Transforaminal Percutaneous Endoscopic Lumbar Discectomy to Avoid Nerve Injury: A Double-Blind Study Using a Biased-Coin Design

open access: yesDrug Design, Development and Therapy, 2022
Bingwei Hu,1,2 Liang Li,2 Hongwei Wang,2 Tingting Ma,2 Zhimei Fu,2 Xianhui Kang,3 Zhiying Feng1 1Department of Pain, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China; 2Department of ...
Hu B   +6 more
doaj  

Brenier Isotonic Regression

open access: yesCoRR
Isotonic regression (IR) is shape-constrained regression to maintain a univariate fitting curve non-decreasing, which has numerous applications including single-index models and probability calibration. When it comes to multi-output regression, the classical IR is no longer applicable because the monotonicity is not readily extendable.
Han Bao, Amirreza Eshraghi, Yutong Wang
openaire   +2 more sources

Mitigating Algorithmic Bias Through Probability Calibration: A Case Study on Lead Generation Data

open access: yesMathematics
Probability calibration is commonly utilized to enhance the reliability and interpretability of probabilistic classifiers, yet its potential for reducing algorithmic bias remains under-explored.
Miroslav Nikolić   +4 more
doaj   +1 more source

Regression with Ordered Predictors via Ordinal Smoothing Splines

open access: yesFrontiers in Applied Mathematics and Statistics, 2017
Many applied studies collect one or more ordered categorical predictors, which do not fit neatly within classic regression frameworks. In most cases, ordinal predictors are treated as either nominal (unordered) variables or metric (continuous) variables ...
Nathaniel E. Helwig, Nathaniel E. Helwig
doaj   +1 more source

The EC of remifentanil to minimize the cardiovascular changes during head holder pinning in neurosurgery [PDF]

open access: yesKorean Journal of Anesthesiology, 2012
BackgroundDuring neuroanesthesia, head holder pinning commonly results in sympathetic stimulation manifested by hemodynamic changes, such as increased heart rate and arterial blood pressure.
Wang Seok Do   +3 more
doaj   +1 more source

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