• Description:

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.

Split Examples
'train' 150
  • Feature structure:
    'features': Tensor(shape=(4,), dtype=float32),
    'label': ClassLabel(shape=(), dtype=int64, num_classes=3),
  • Feature documentation:
Feature Class Shape Dtype Description
features Tensor (4,) float32
label ClassLabel int64
  • Citation:
@misc{Dua:2019 ,
author = "Dua, Dheeru and Graff, Casey",
year = "2017",
title = "{UCI} Machine Learning Repository",
url = "",
institution = "University of California, Irvine, School of Information and Computer Sciences"