Data
Iris

Iris

active ARFF Publicly available Visibility: public Uploaded 08-07-2022 by Laurens Krudde
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This is perhaps the best known database to be found in the pattern recognition literature. Fisher's paper is a classic in the field and is referenced frequently to this day. (See Duda & Hart, for example.) The data set contains 3 classes of 50 instances each, where each class refers to a type of iris plant. One class is linearly separable from the other 2; the latter are NOT linearly separable from each other.

5 features

class (target)string3 unique values
0 missing
sepal_lengthnumeric35 unique values
0 missing
sepal_widthnumeric23 unique values
0 missing
petal_lengthnumeric43 unique values
0 missing
petal_widthnumeric22 unique values
0 missing
Show all 5 features

19 properties

NumberOfInstances
149
Number of instances (rows) of the dataset.
NumberOfFeatures
5
Number of attributes (columns) of the dataset.
NumberOfClasses
3
Number of distinct values of the target attribute (if it is nominal).
NumberOfMissingValues
0
Number of missing values in the dataset.
NumberOfInstancesWithMissingValues
0
Number of instances with at least one value missing.
NumberOfNumericFeatures
4
Number of numeric attributes.
NumberOfSymbolicFeatures
0
Number of nominal attributes.
PercentageOfBinaryFeatures
0
Percentage of binary attributes.
PercentageOfInstancesWithMissingValues
0
Percentage of instances having missing values.
AutoCorrelation
1
Average class difference between consecutive instances.
PercentageOfMissingValues
0
Percentage of missing values.
Dimensionality
0.03
Number of attributes divided by the number of instances.
PercentageOfNumericFeatures
80
Percentage of numeric attributes.
MajorityClassPercentage
33.56
Percentage of instances belonging to the most frequent class.
PercentageOfSymbolicFeatures
0
Percentage of nominal attributes.
MajorityClassSize
50
Number of instances belonging to the most frequent class.
MinorityClassPercentage
32.89
Percentage of instances belonging to the least frequent class.
MinorityClassSize
49
Number of instances belonging to the least frequent class.
NumberOfBinaryFeatures
0
Number of binary attributes.
Show all 19 properties

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