oversampling


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oversampling

Multiplying the number of samples in a digital signal by some factor. For example, the early CD players were improved when their digital audio signals were multiplied 8 times before sending them to the digital-to-analog converter (DAC). The digital filters were found to operate more efficiently at higher frequencies. See upsampling.
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In general, those methods are derivatives of the oversampling techniques, like for example Delta-Sigma A/D conversion [7] with main difference that stochastic approach excludes feedback loop, which is inevitable in Delta-Sigma A/D conversion.
Acceleration of Digital Stochastic Measurement Simulation Based on Concurrent Programming
A brief experimental study is carried out in order to show the quality of the proposed oversampling implementation.
SMOTE-BD: An Exact and Scalable Oversampling Method for Imbalanced Classification in Big Data: SMOTE-BD: Un Metodo de Sobremuestreo Exacto y Escalable para la Clasificacion no Balanceada en Big Data
Frequency domain oversampling [7] can extend the error tolerance; however the tolerance is less than 5 Hz.
Parallel Resampling of OFDM Signals for Fluctuating Doppler Shifts in Underwater Acoustic Communication
Hosseinzadeh and Eftekharia [25] preprocessed the original data using the fuzzy cluster and synthetic oversampling technique (SMOTE) to obtain the training set on which Rotation Forest is learned.
Embedding Undersampling Rotation Forest for Imbalanced Problem
The representative scheme is randomly oversampling the minority class and undersampling the majority class [17, 18] or a combination of both schemes.
A Framework of Rebalancing Imbalanced Healthcare Data for Rare Events' Classification: A Case of Look-Alike Sound-Alike Mix-Up Incident Detection
But random undersampling can potentially rmove certain important samples, and random oversampling can lead to overfitting.
An Imbalanced Malicious Domains Detection Method Based on Passive DNS Traffic Analysis
Interchangeable digital load cells equipped with individual 18 bit 4 times oversampling AD converters are said to improve the performance by a factor of 20.
High force DMA testing
So in general, some degree of oversampling is considered, which introduces redundancy in the coefficients, in order to "smooth" the biorthonormal window [gamma](k), for the sake of numerical stability.
HEART SOUND LOCALIZATION AND REDUCTION IN TRACHEAL SOUNDS BY GABOR TIME-FREQUENCY MASKING
Inverse-Probability Oversampling. An intuitive method for correcting for sample selection bias is the plain replication of each observation in the sample according to its IP weight (i.e., in a stratified random sample, one replicates an observation of stratum h by the factor [w.sub.h]).
Correcting Classifiers for Sample Selection Bias in Two-Phase Case-Control Studies
On Monday, Trump said "WikiLeaks also shows how John Podesta rigged the polls by oversampling Democrats, a voter suppression technique." A "pants-on-fire" lie, says PolitiFact.
Truth or lie?
Trump has made 55 "Pants on Fire" comments, including today's comment on how Clinton campaign chairman John Podesta (http://www.politifact.com/personalities/donald-trump/statements/byruling/pants-fire/) rigged polls by oversampling Democrats as a voter suppression technique.
Clinton Lie About Bosnia Trip Disqualifies Her For Presidency: Trump
In oversampling mechanism suitable percentages must be provided for creation of synthetic data points in each class, to render magnitude of each class closer to magnitude of two largest classes; C7 and C17 (i.e.
Music emotion recognition with audio and lyrics features

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