import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
from pandas import Series,DataFrame
from sklearn import datasets
iris=datasets.load_iris()
dir(iris)
Iris Plants Database
====================
Notes
-----
Data Set Characteristics:
:Number of Instances: 150 (50ineachof three classes)
:Number of Attributes: 4 numeric, predictive attributes and the class
:Attribute Information:#四列数据的四个特征
- sepal length in cm
- sepal width in cm
- petal length in cm
- petal width in cm
- class:#数据描述三类鸢尾花
- Iris-Setosa
- Iris-Versicolour
- Iris-Virginica
:Summary Statistics:#四列数据的简单统计信息
============== ==== ==== ======= ===== ====================
Min Max Mean SD Class Correlation
============== ==== ==== ======= ===== ====================
sepal length: 4.37.95.840.830.7826
sepal width: 2.04.43.050.43 -0.4194
petal length: 1.06.93.761.760.9490 (high!)
petal width: 0.12.51.200.760.9565 (high!)
============== ==== ==== ======= ===== ====================
:Missing Attribute Values: None
:Class Distribution: 33.3% foreachof3 classes.
:Creator: R.A. Fisher
:Donor: Michael Marshall (MARSHALL%[email protected])
:Date: July, 1988
This is a copy of UCI ML iris datasets.
http://archive.ics.uci.edu/ml/datasets/Iris
The famous Iris database, first used by Sir R.A Fisher
This is perhaps the best known database to be found in the
pattern recognition literature. Fisher's paper is a classic in the field andis referenced frequently to this day. (See Duda & Hart, for example.) The
data set contains 3 classes of50 instances each, whereeachclass refers to a
type of iris plant. One classis linearly separable from the other 2; the
latter are NOT linearly separable fromeach other.
References
----------
- Fisher,R.A. "The use of multiple measurements in taxonomic problems"
Annual Eugenics, 7, Part II, 179-188 (1936); also in"Contributions to
Mathematical Statistics" (John Wiley, NY, 1950).
- Duda,R.O., & Hart,P.E. (1973) Pattern Classification and Scene Analysis.
(Q327.D83) John Wiley & Sons. ISBN 0-471-22361-1. See page 218.
- Dasarathy, B.V. (1980) "Nosing Around the Neighborhood: A New System
Structure and Classification Rule for Recognition in Partially Exposed
Environments". IEEE Transactions on Pattern Analysis and Machine
Intelligence, Vol. PAMI-2, No. 1, 67-71.
- Gates, G.W. (1972) "The Reduced Nearest Neighbor Rule". IEEE Transactions
on Information Theory, May 1972, 431-433.
- See also: 1988 MLC Proceedings, 54-64. Cheeseman et al"s AUTOCLASS II
conceptual clustering system finds 3 classes in the data.
- Many, many more ...