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原文:
Iris plantsdataset
--------------------
**Data SetCharacteristics:**
:Number of Instances: 150 (50 in each ofthree classes)
:Number of Attributes: 4 numeric,predictive attributes and the class
:Attribute Information:
- sepal length in cm
- sepal width in cm
- petal length in cm
- petal width in cm
- class:
- Iris-Setosa
- Iris-Versicolour
- Iris-Virginica
:Summary Statistics: Min Max Mean SD Class Correlation sepal length: 4.3 7.9 5.84 0.83 0.7826 sepal width: 2.0 4.4 3.05 0.43 -0.4194 petal length: 1.0 6.9 3.76 1.76 0.9490 (high!) petal width: 0.1 2.5 1.20 0.76 0.9565 (high!)
:Missing Attribute Values: None
:Class Distribution: 33.3% for each of 3classes.
:Creator: R.A. Fisher
:Donor: Michael Marshall(MARSHALL%PLU@io.arc.nasa.gov)
:Date: July, 1988
The famous Irisdatabase, first used by Sir R.A. Fisher. The dataset is taken from Fisher'spaper. Note that it's the same as in R, but not as in the UCI Machine LearningRepository, which has two wrong data points.
This is perhapsthe best known database to be found in the patternrecognition literature. Fisher's paperis a classic in the field and is referencedfrequently to this day. (See Duda &Hart, for example.) The data setcontains 3 classes of 50 instances each, where each class refers to a type of irisplant. One class is linearly separablefrom the other 2; the latter are NOTlinearly separable from each other.
.. topic::References
- Fisher, R.A. "The use of multiplemeasurements 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 Aroundthe Neighborhood: A New System Structure and Classification Rule forRecognition in Partially Exposed Environments". IEEE Transactions on Pattern Analysis andMachine Intelligence, Vol. PAMI-2, No. 1, 67-71.
- Gates, G.W. (1972) "The ReducedNearest Neighbor Rule". IEEETransactions on Information Theory, May 1972, 431-433.
- See also: 1988 MLC Proceedings,54-64. Cheeseman et al"s AUTOCLASSII conceptual clustering system finds 3classes in the data.
- Many, many more ...
译文
鸢尾属植物数据集
--------------------
**数据集特征:**
:实例数:150(三个类各50个)
:属性数:4个数值、预测属性和类
:属性信息:
-萼片长度(厘米)
-萼片宽度(cm)
-花瓣长度(cm)
-花瓣宽度(cm)
-类:
-刚毛鸢尾
-彩色鸢尾
-维吉尼卡鸢尾
:摘要统计:
最小-最大平均SD类相关性
萼片长: 4.3 7.9 5.84 0.83 0.7826
萼片宽度:2.0 4.4 3.05 0.43-0.4194
花瓣长度:1.0 6.9 3.76 1.76 0.9490(高!)
花瓣宽度:0.1 2.5 1.20 0.76 0.9565(高!)
:缺少属性值:无
:类分布:3个班级各占33.3%。
:创建者:R.A.Fisher
:捐赠者:迈克尔·马歇尔(Marshall%PLU@io.arc.nasa.gov)
:日期:1988年7月
著名的Iris数据库,首先由R.A.Fisher爵士使用。获取数据集
来自费舍尔的报纸。请注意,它与R中的相同,但与UCI中的不同
机器学习库,它有两个错误的数据点。
这可能是在模式识别文献。费舍尔的论文是该领域的经典经常提到今天。(例如,见Duda&Hart。)数据集包含3个类,每个类有50个实例,其中每个类引用鸢尾属植物的类型。一类与另两类线性可分后者不能线性分离。
.. 主题::参考文献
-Fisher,R.A.“分类学问题中多重测量的使用”年度优生学,7,第二部分,179-188年(1936年);也在“贡献《数理统计》(约翰威利,纽约,1950)。
-Duda,R.O.和Hart,P.E.(1973),模式分类和场景分析。(Q327.D83)约翰威利父子公司。国际标准书号0-471-22361-1。见第218页。
-Dasarathy,B.V.(1980),“探察邻里:一个新系统部分曝光识别的结构与分类规则环境”。IEEE模式分析与机器汇刊情报,PAMI-2卷,第1期,67-71页。
-盖茨,G.W.(1972)“简化最近邻规则”。IEEE事务处理信息论,1972年5月,431-433。
-另见:《1988年跨国公司诉讼录》,第54-64页。Cheeseman等人的汽车II类概念聚类系统在数据中发现了3个类。
-更多,更多…
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