Imbalanced
نویسندگان
چکیده
منابع مشابه
Imbalanced Learning
With the continuous expansion of data availability in many large-scale, complex, and networked systems, it becomes critical to advance raw data from fundamental research on the Big Data challenge to support decision-making processes. Although existing machine-learning and data-mining techniques have shown great success in many real-world applications, learning from imbalanced data is a relative...
متن کاملFoundations of Imbalanced Learning
Many important learning problems, from a wide variety of domains, involve learning from imbalanced data. Because this learning task is quite challenging, there has been a tremendous amount of research on this topic over the past fifteen years. However, much of this research has focused on methods for dealing with imbalanced data, without discussing exactly how or why such methods work—or what u...
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We consider stationary, forced, imbalanced, or cross-helical MHD Alfvénic turbulence where the waves traveling in one direction have higher amplitudes than the opposite waves. This paper is dedicated to so-called strong turbulence, which cannot be treated perturbatively. Our main result is that the anisotropy of the weak waves is stronger than the anisotropy of a strong waves. We propose that c...
متن کاملClassifying Severely Imbalanced Data
Learning from data with severe class imbalance is difficult. Established solutions include: under-sampling, adjusting classification threshold, and using an ensemble. We examine the performance of combining these solutions to balance the sensitivity and specificity for binary classifications, and to reduce the MSE score for probability estimation.
متن کاملInfinitely Imbalanced Logistic Regression
In binary classification problems it is common for the two classes to be imbalanced: one case is very rare compared to the other. In this paper we consider the infinitely imbalanced case where one class has a finite sample size and the other class’s sample size grows without bound. For logistic regression, the infinitely imbalanced case often has a useful solution. Under mild conditions, the in...
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ژورنال
عنوان ژورنال: American Journal of Physical Medicine & Rehabilitation
سال: 2017
ISSN: 0894-9115
DOI: 10.1097/phm.0000000000000591