preprocessing


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preprocessing

A preliminary processing of data in order to prepare it for the primary processing or for further analysis. The term can be applied to any first or preparatory processing stage when there are several steps required to prepare data for the user. For example, extracting data from a larger set, filtering it for various reasons and combining sets of data could be preprocessing steps. See preprocessor and compiler directive.
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References in periodicals archive ?
These are some of the key activities when preprocessing data for analytics.
The first of these includes images without any preprocessing, and the dimensions of the images in the dataset were resized as 128 x 128, passed through the model, and their performance was evaluated.
Preprocessing consists of three steps: background correction, normalization, and summarization [5].
Then, it can be concluded that data preprocessing is significantly effective in improving the accuracy of the PCA model, and it is really necessary and meaningful to preprocess the data from a real operating environment.
In the principal component analysis method based on the traditional data preprocessing, when removing the original data dimension, all are based on the European metric data preprocessing method, and some important information of the data will be ignored, and often these data are important variables that contain slowly changing fault information.
Training Data Preprocessing and Wound Segmentation Based on Deep Learning.
Soft Sensor Model Based on Improved Elman NN with Variable Data Preprocessing. Soft sensor model based on improved Elman NN with variable data selection is aimed at exploiting the essential information behind the process data and filter redundant variable data in the soft sensor model.
ARS Analysis and Preprocessing. The properties of electromagnetic radiation could interact with different proportions of physicochemical materials existing in the adulterated CCA, resulting in some especial absorption characteristics at some specific wavelengths [25].
The Efficiency of the Preprocessing. Through a series of processing introduced in Section 2.2, the intensity difference between strong and weak respiratory signals becomes small and its efficiency is validated.
During the realization of the preprocessing stage, the initial JA factors are allotted as follows: agents size (N) = 20, number of iterations = 2000, dimension of explore (D) =Th, and the stopping criterion if the maximized Otsu's value.
BioSymetrics said it addresses challenges in biomedicine by developing massive data analytics and optimised end-to-end machine learning technology with a focus on preprocessing and standardisation capabilities across multiple and combined data types in medicine.