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Pen_local

Pen_local

in_preparation ARFF Publicly available Visibility: public Uploaded 22-09-2017 by Minh-Anh Le
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"This UCI dataset contains the hand- written digits 0–9 of 45 different writers. All digits are kept, except for the digit 4. From this class, the first 10 instances are kept (similar to [46]). This results in a local anomaly detection task with clusters of different densities and 10 local anomalies, which we refer to as pen-local." (cite from Goldstein, Markus, and Seiichi Uchida. "A comparative evaluation of unsupervised anomaly detection algorithms for multivariate data." PloS one 11.4 (2016): e0152173.). This dataset is not the original dataset. The target variable "Target" is relabeled into "Normal" and "Anomaly".

17 features

Target (target)nominal2 unique values
0 missing
V1numeric101 unique values
0 missing
V2numeric96 unique values
0 missing
V3numeric101 unique values
0 missing
V4numeric96 unique values
0 missing
V5numeric101 unique values
0 missing
V6numeric101 unique values
0 missing
V7numeric101 unique values
0 missing
V8numeric101 unique values
0 missing
V9numeric101 unique values
0 missing
V10numeric101 unique values
0 missing
V11numeric101 unique values
0 missing
V12numeric101 unique values
0 missing
V13numeric101 unique values
0 missing
V14numeric101 unique values
0 missing
V15numeric101 unique values
0 missing
V16numeric101 unique values
0 missing

62 properties

6724
Number of instances (rows) of the dataset.
17
Number of attributes (columns) of the dataset.
2
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.
16
Number of numeric attributes.
1
Number of nominal attributes.
-0.36
First quartile of skewness among attributes of the numeric type.
50.61
Mean of means among attributes of the numeric type.
26.46
First quartile of standard deviation of attributes of the numeric type.
1
Average class difference between consecutive instances.
Average mutual information between the nominal attributes and the target attribute.
Second quartile (Median) of entropy among attributes.
0.02
Entropy of the target attribute values.
An estimate of the amount of irrelevant information in the attributes regarding the class. Equals (MeanAttributeEntropy - MeanMutualInformation) divided by MeanMutualInformation.
-0.93
Second quartile (Median) of kurtosis among attributes of the numeric type.
0
Number of attributes divided by the number of instances.
2
Average number of distinct values among the attributes of the nominal type.
48.91
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.
-0.04
Mean skewness among attributes of the numeric type.
Second quartile (Median) of mutual information between the nominal attributes and the target attribute.
99.85
Percentage of instances belonging to the most frequent class.
30.25
Mean standard deviation of attributes of the numeric type.
0.11
Second quartile (Median) of skewness among attributes of the numeric type.
6714
Number of instances belonging to the most frequent class.
Minimal entropy among attributes.
5.88
Percentage of binary attributes.
31.27
Second quartile (Median) of standard deviation of attributes of the numeric type.
Maximum entropy among attributes.
-1.68
Minimum kurtosis among attributes of the numeric type.
0
Percentage of instances having missing values.
Third quartile of entropy among attributes.
3.07
Maximum kurtosis among attributes of the numeric type.
31.84
Minimum of means among attributes of the numeric type.
0
Percentage of missing values.
-0.24
Third quartile of kurtosis among attributes of the numeric type.
83.34
Maximum of means among attributes of the numeric type.
Minimal mutual information between the nominal attributes and the target attribute.
94.12
Percentage of numeric attributes.
57.79
Third quartile of means among attributes of the numeric type.
Maximum mutual information between the nominal attributes and the target attribute.
2
The minimal number of distinct values among attributes of the nominal type.
5.88
Percentage of nominal attributes.
Third quartile of mutual information between the nominal attributes and the target attribute.
2
The maximum number of distinct values among attributes of the nominal type.
-1.48
Minimum skewness among attributes of the numeric type.
First quartile of entropy among attributes.
0.53
Third quartile of skewness among attributes of the numeric type.
0.8
Maximum skewness among attributes of the numeric type.
16.96
Minimum standard deviation of attributes of the numeric type.
-1.12
First quartile of kurtosis among attributes of the numeric type.
34.78
Third quartile of standard deviation of attributes of the numeric type.
42.57
Maximum standard deviation of attributes of the numeric type.
0.15
Percentage of instances belonging to the least frequent class.
10
Number of instances belonging to the least frequent class.
36.45
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.
Average entropy of the attributes.
1
Number of binary attributes.
First quartile of mutual information between the nominal attributes and the target attribute.
-0.53
Mean kurtosis among attributes of the numeric type.

8 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
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