Results 21 to 30 of about 1,120,836 (288)

HABOS clustering algorithm for categorical data

open access: yes工程科学学报, 2016
The clustering algorithm based on sparse feature vector for categorical attributes(CABOSFVC) is an efficient high-dimensional clustering method for categorical data.
WU Sen, JIANG Dan-dan, WANG Qiang
doaj   +1 more source

Categorical Data-Specifications

open access: yesTheory and Applications of Categories, 1995
Summary: We introduce MD-sketches, which are a particular kind of Finite Sum sketches. Two interesting results about MD-sketches are proved. First, we show that, given two MD-sketches, it is algorithmically decidable whether their model categories are equivalent. Next we show that data-specifications as used in database-design and software engineering,
Piessens, Frank, Steegmans, Eric
openaire   +2 more sources

Survey on categorical data for neural networks

open access: yesJournal of Big Data, 2020
This survey investigates current techniques for representing qualitative data for use as input to neural networks. Techniques for using qualitative data in neural networks are well known.
John T. Hancock, Taghi M. Khoshgoftaar
doaj   +1 more source

A COMBINED APPROACH OF MULTIPLE CORRESPONDENCE ANALYSIS AND HIERARCHICAL CLUSTER ANALYSIS FOR PROFILING RELATIONSHIPS AMONG CATEGORICAL RISK PREDICTORS: A BLUETONGUE CASE STUDY

open access: yesSlovenian Veterinary Research, 2023
Bluetongue (BT) is a non-contagious virus in the Reoviridae family that infects both wild and domestic animals. It causes economic losses and reduces infected animals' production and reproduction.
Iman E. El-Araby   +3 more
doaj   +1 more source

SIMPLE ALGORITHM TO CONSTRUCT CIRCULAR CONFIDENCE REGIONS IN CORRESPONDENCE ANALYSIS USING R

open access: yesBarekeng, 2022
Correspondence analysis has been widely applied in various fields as a graphical method to depict the association structure between two categorical random variables on a low-dimensional plot. This study built a simple algorithm to determine the principal
Karunia Eka Lestari   +2 more
doaj   +1 more source

Smoothing Categorical Data [PDF]

open access: yes, 2012
Global models of a dataset reflect not only the large scale structure of the data distribution, they also reflect small(er) scale structure. Hence, if one wants to see the large scale structure, one should somehow subtract this smaller scale structure from the model. While for some kinds of model --- such as boosted classifiers --- it is easy to see
Siebes, Arno, Kersten, René
openaire   +2 more sources

Missing Categorical Data Imputation and Individual Observation Level Imputation

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2014
Traditional missing data techniques of imputation schemes focus on prediction of the missing value based on other observed values. In the case of continuous missing data the imputation of missing values often focuses on regression models.
Pavel Zimmermann   +2 more
doaj   +1 more source

Role of Categorical Variables in Multicollinearity in the Linear Regression Model [PDF]

open access: yes, 2007
The present article discusses the role of categorical variable in the problem of multicollinearity in linear regression model. It exposes the diagnostic tool condition number to linear regression models with categorical explanatory variables and analyzes
Toutenburg, Helge   +2 more
core   +1 more source

Change detection in categorical evolving data streams

open access: yes, 2014
Detecting change in evolving data streams is a central issue for accurate adaptive learning. In real world applications, data streams have categorical features, and changes induced in the data distribution of these categorical features have not been ...
Ienco, Dino   +7 more
core   +1 more source

Tree-Based Contrast Subspace Mining for Categorical Data

open access: yesInternational Journal of Computational Intelligence Systems, 2020
Mining contrast subspace has emerged to find subspaces where a particular queried object is most similar to the target class against the non-target class in a two-class data set.
Florence Sia, Rayner Alfred, Yuto Lim
doaj   +1 more source

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