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in_preparation ARFF Publicly available Visibility: public Uploaded 23-08-2017 by Rafael Gomes Mantovani
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The examined group comprised kernels belonging to three different varieties of wheat: Kama, Rosa and Canadian, 70 elements each, randomly selected for the experiment. High quality visualization of the internal kernel structure was detected using a soft X-ray technique. It is non-destructive and considerably cheaper than other more sophisticated imaging techniques like scanning microscopy or laser technology. The images were recorded on 13x18 cm X-ray KODAK plates. Studies were conducted using combine harvested wheat grain originating from experimental fields, explored at the Institute of Agrophysics of the Polish Academy of Sciences in Lublin. The data set can be used for the tasks of classification and cluster analysis.

8 features

Target (target)nominal3 unique values
0 missing
areanumeric193 unique values
0 missing
perimeternumeric170 unique values
0 missing
compactnessnumeric186 unique values
0 missing
length.kernelnumeric188 unique values
0 missing
width.kernelnumeric184 unique values
0 missing
assymetrynumeric207 unique values
0 missing
length.groovenumeric148 unique values
0 missing

62 properties

210
Number of instances (rows) of the dataset.
8
Number of attributes (columns) of the dataset.
3
Number of distinct values of the target attribute (if it is nominal).
0
Number of missing values in the dataset.
0
Number of instances with at least one value missing.
7
Number of numeric attributes.
1
Number of nominal attributes.
-0.73
Mean kurtosis among attributes of the numeric type.
0
Number of binary attributes.
First quartile of mutual information between the nominal attributes and the target attribute.
6.9
Mean of means among attributes of the numeric type.
0.13
First quartile of skewness among attributes of the numeric type.
Average mutual information between the nominal attributes and the target attribute.
0.38
First quartile of standard deviation of attributes of the numeric type.
0.99
Average class difference between consecutive instances.
An estimate of the amount of irrelevant information in the attributes regarding the class. Equals (MeanAttributeEntropy - MeanMutualInformation) divided by MeanMutualInformation.
Second quartile (Median) of entropy among attributes.
1.58
Entropy of the target attribute values.
3
Average number of distinct values among the attributes of the nominal type.
-0.84
Second quartile (Median) of kurtosis among attributes of the numeric type.
0.04
Number of attributes divided by the number of instances.
0.27
Mean skewness among attributes of the numeric type.
5.41
Second quartile (Median) of means among attributes of the numeric type.
Number of attributes needed to optimally describe the class (under the assumption of independence among attributes). Equals ClassEntropy divided by MeanMutualInformation.
1.01
Mean standard deviation of attributes of the numeric type.
Second quartile (Median) of mutual information between the nominal attributes and the target attribute.
33.33
Percentage of instances belonging to the most frequent class.
Minimal entropy among attributes.
0.4
Second quartile (Median) of skewness among attributes of the numeric type.
70
Number of instances belonging to the most frequent class.
Maximum entropy among attributes.
-1.11
Minimum kurtosis among attributes of the numeric type.
0
Percentage of binary attributes.
0.49
Second quartile (Median) of standard deviation of attributes of the numeric type.
-0.07
Maximum kurtosis among attributes of the numeric type.
0.87
Minimum of means among attributes of the numeric type.
0
Percentage of instances having missing values.
Third quartile of entropy among attributes.
14.85
Maximum of means among attributes of the numeric type.
Minimal mutual information between the nominal attributes and the target attribute.
0
Percentage of missing values.
-0.14
Third quartile of kurtosis among attributes of the numeric type.
Maximum mutual information between the nominal attributes and the target attribute.
3
The minimal number of distinct values among attributes of the nominal type.
87.5
Percentage of numeric attributes.
14.56
Third quartile of means among attributes of the numeric type.
3
The maximum number of distinct values among attributes of the nominal type.
-0.54
Minimum skewness among attributes of the numeric type.
12.5
Percentage of nominal attributes.
Third quartile of mutual information between the nominal attributes and the target attribute.
0.56
Maximum skewness among attributes of the numeric type.
0.02
Minimum standard deviation of attributes of the numeric type.
First quartile of entropy among attributes.
0.53
Third quartile of skewness among attributes of the numeric type.
2.91
Maximum standard deviation of attributes of the numeric type.
33.33
Percentage of instances belonging to the least frequent class.
-1.1
First quartile of kurtosis among attributes of the numeric type.
1.5
Third quartile of standard deviation of attributes of the numeric type.
Average entropy of the attributes.
70
Number of instances belonging to the least frequent class.
3.26
First quartile of means among attributes of the numeric type.
0
Standard deviation of the number of distinct values among attributes of the nominal type.

10 tasks

0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
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