Iris
Donated on 7/1/1988
A small classic dataset from Fisher, 1936. One of the earliest datasets used for evaluation of classification methodologies.
Dataset Characteristics
Multivariate
Subject Area
Life Science
Associated Tasks
Classification
Attribute Type
Real
# Instances
150
# Attributes
5
Information
Has the dataset been used for any tasks already?
Widely used for tasks such as classification and clustering, particularly for tutorial/teaching purposes
Additional Information
This is one of the best known datasets in statistics and machine learning. Fisher's paper is a classic in the field and is frequently used for tutorial and teaching purposes. 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. Predicted attribute: class of iris plant. Attribute information: 1. sepal length in cm 2. sepal width in cm 3. petal length in cm 4. petal width in cm 5. class: -- Iris Setosa -- Iris Versicolour -- Iris Virginica This is an exceedingly simple domain. This data differs from the data presented in Fishers article (identified by Steve Chadwick, spchadwick@espeedaz.net ). The 35th sample should be: 4.9,3.1,1.5,0.2,"Iris-setosa" where the error is in the fourth feature. The 38th sample: 4.9,3.6,1.4,0.1,"Iris-setosa" where the errors are in the second and third features. Each instance consists of measurements of an Iris flower
Features
| Attribute Name | Role | Type | Description | Units | Missing Values |
|---|---|---|---|---|---|
| sepal length | Feature | Continuous | cm | false | |
| sepal width | Feature | Continuous | cm | false | |
| petal length | Feature | Continuous | cm | false | |
| petal width | Feature | Continuous | cm | false | |
| class | Target | Categorical | class of iris plant | false |
1 to 10 of 5
Baseline Model Performance
Fisher,R.A.. (1988). Iris. UCI Machine Learning Repository.
@misc{misc_iris_53,
author = {Fisher,R.A.},
title = {{Iris}},
year = {1988},
howpublished = {UCI Machine Learning Repository}
}Keywords
Creators
R.A. Fisher
License
This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license.
This allows for the sharing and adaptation of the datasets for any purpose, provided that the appropriate credit is given.