WEKA数据分析实验

WEKA数据分析实验1. 实验简介借助工具Weka 3.6 ,对数据样本进行测试，分类测试方法包括：朴素贝叶斯、决策树、 随机数三类，聚类测试方法包括：DBScan, K均值两种；2.数据样本以熟悉数据分类的各类常用算法，以及了解Weka的使用方法为目的，本次试验中，采 用的数据样本是Weka软件自带的“Vote”样本，如图：3. 关联规则分析1）操作步骤：a）点击“Explorer”按钮，弹出“Weka Explorer”控制界面b）选择Associate选项卡；c）点击“Choose”按钮，选择“Apriori”规则d）点击参数文本框框，在参数选项卡设置参数如：e）点击左侧“Start”按钮2）执行结果：=Run information 二二二Scheme:Relation:Instan ces:weka.associations.Apriori -1 -N 10 -T 0 -C 0.9 -D 0.05 -U 1.0 -M 0.5 -S -1.0 -c -1 vote435Attributes:17han dicapped-i nfants water-project-cost-shari ngadopti on-o f-the-budget-resoluti on physician-fee-freezeel-salvador-aid religious-groups-in-schools an ti-satellite-test-ban aid-t o-n icaragua n-con tras mx-missileimmigrati onsynf uels-corporation-cutback education-spe ndingsuperf un d-right-to-suecrimeduty-free-exports export-administratio n-act-south-africa Class=Associator model (full training set)=AprioriMinimum support: 0.5 (218 instances)Minimum metric : 0.9Number of cycles performed: 10Generated sets of large itemsets:Size of set of large itemsets L(l): 12Large Itemsets L(l):handicapped-infants二n 236adoption-of-the-budget-resolution二y 253physician-fee-freeze二n 247religious-groups-in-schools二y 272anti-satellite-test-ban=y 239aid-to-nicaraguan-contras=y 242synfuels-corporation-cutback=n 264education-spending二n 233crime=y 248duty-free-exports=n 233export-administratio n-act-south-africa=y 269Class=democrat 267Size of set of large itemsets L(2): 4Large Itemsets L(2):adoption-of-the-budget-resolution二y physician-fee-freeze=n 219adoption-of-the-budget-resolution二y Class=democrat 231physician-fee-freeze二n Class=democrat 245aid-to-nicaraguan-contras=y Class=democrat 218Size of set of large itemsets L(3): 1Large Itemsets L(3):adoption-of-the-budget-resolution二y physician-fee-freeze二n Class=democrat 219Best rules found:1. adoption-of-the-budget-resolution二y physician-fee-freeze二n 219 = Class=democrat 219conf:(l)2. physician-fee-freeze二n 247 = Class=democrat 245conf:(0.99)3. adoption-of-the-budget-resolution二y Class=democrat 231 = physician-fee-freeze二n 219 conf:(0.95)4. Class=democrat 267 = physician-fee-freeze二n 245conf:(0.92)5. adoption-of-the-budget-resolution二y 253 = Class=democrat 231conf:(0.91)6. aid-to-nicaraguan-contras=y 242 = Class=democrat 218conf:(0.9)3)结果分析：a) 该样本数据，数据记录数435个，17个属性，进行了 10轮测试b) 最小支持度为0.5,即至少需要218个实例；c) 最小置信度为0.9；d) 进行了 10轮搜索，频繁1项集12个，频繁2项集4个，频繁3项集1个;4. 分类算法-随机树分析1) 操作步骤：a) 点击Explorer按钮，弹出Weka Explorer控制界面b) 选择u Classify 选项卡；c) 点击Choose按钮，选择trees弓RandomTree规则d) 设置 Cross-validation 为 10 次e) 点击左侧“Start”按钮2) 执彳丁结果：=Run information 二二二Scheme:weka.classifiers.trees.RandomTree -K 0 -M 1.0 -S 1Relation: voteInstan ces:435Attributes:17han dicapped-i nfantswater-project-cost-shari ngadopti on-o f-the-budget-resoluti on physician-fee-freezeel-salvador-aidreligious-groups-in-schoolsan ti-satellite-test-ba naid-t o-n icaragua n-con trasmx-missileimmigratio nsynf uels-corporation-cutbackeducation-spendi ngsuperf un d-right-to-suecrimeduty-free-exportsexport-administratio n-act-south-africaClassTest mode:10-fold cross-validation=Classifier model (full training set)=Ran domTree el-salvador-aid = n|physicia n-fee-freeze = n| duty-free-exports = n| anti-satellite-test-ban 二 nIllisynf uels-corporati on-cutback = n| crime = n: republican (0.9/D)IIIIIcrime = y| handicapped-infants= n : democrat (2.0).01)| handicapped-infants= y : democrat (0.043)Illi synf uels-corporation-cutback = y|handicapped-infants 二 n :democrat (0.79/3.01)|handicapped-infants = y :democrat (2.12/0)| anti-satellite-test-ban 二 yIlliadoption-of-the-budget-resolution 二 n|handicapped-infants二 n : democrat (1.20.01)|handicapped-infants= y : republican( 1.25/0.25)Illiadoption-of-the-budget-resolution 二 y|handicapped-infants 二 n| crime = n: democrat (5.94/D.01)| crime = y: democrat (5.15/0.12)|handicapped-infants = y : democrat (36.99/0.09)|duty-free-exports = y| crime = n: democrat(124.20.29)| crime = yIllihandicapped-infants = n : democrat (16.9/3.38)Illihandicapped-infants 二 y : democrat (8.99/0.02)|physicia n-fee-freeze = y|immigration = n| education-spending 二 nIllicrime = n : democrat (1.09/0)Illicrime = y : democrat (1.01/0.01)|education-spending 二 y: republican( 1.0/0.02)| immigration = y|synf uels-corporati on-cutback = nIllireligious-groups-in-schools = n : republican (3.0加.02)Illi religious-groups-in-schools = y : republican( 1.54/104)|synfuels-corporation-cutback = y : republican (1.00.05)el-salvador-aid = y|synf uels-corporati on-cutback = n| physicia n-fee-fre