WEKA數據分析實驗

WEKA數據分析試驗試驗介紹借助工具Weka3.6，對數據樣本進行測試，分類測試方法包含：樸素貝葉斯、決議樹、隨機數三類，聚類測試方法包含：DBScan，K均值兩種；數據樣本以熟悉數據分類各類慣用算法，以及了解Weka使用方法為目標，此次試驗中，采取數據樣本是Weka軟件自帶“Vote”樣本，如圖：關聯規(guī)則分析操作步驟：點擊“Explorer”按鈕，彈出“WekaExplorer”控制界面選擇“Associate”選項卡；點擊“Choose”按鈕，選擇“Apriori”規(guī)則點擊參數文本框框，在參數選項卡設置參數如：點擊左側“Start”按鈕執(zhí)行結果：===Runinformation===Scheme:weka.associations.Apriori-I-N10-T0-C0.9-D0.05-U1.0-M0.5-S-1.0-c-1Relation:voteInstances:435Attributes:17handicapped-infantswater-project-cost-sharingadoption-of-the-budget-resolutionphysician-fee-freezeel-salvador-aidreligious-groups-in-schoolsanti-satellite-test-banaid-to-nicaraguan-contrasmx-missileimmigrationsynfuels-corporation-cutbackeducation-spendingsuperfund-right-to-suecrimeduty-free-exportsexport-administration-act-south-africaClass===Associatormodel(fulltrainingset)===Apriori=======Minimumsupport:0.5(218instances)Minimummetric<confidence>:0.9Numberofcyclesperformed:10Generatedsetsoflargeitemsets:SizeofsetoflargeitemsetsL(1):12LargeItemsetsL(1):handicapped-infants=n236adoption-of-the-budget-resolution=y253physician-fee-freeze=n247religious-groups-in-schools=y272anti-satellite-test-ban=y239aid-to-nicaraguan-contras=y242synfuels-corporation-cutback=n264education-spending=n233crime=y248duty-free-exports=n233export-administration-act-south-africa=y269Class=democrat267SizeofsetoflargeitemsetsL(2):4LargeItemsetsL(2):adoption-of-the-budget-resolution=yphysician-fee-freeze=n219adoption-of-the-budget-resolution=yClass=democrat231physician-fee-freeze=nClass=democrat245aid-to-nicaraguan-contras=yClass=democrat218SizeofsetoflargeitemsetsL(3):1LargeItemsetsL(3):adoption-of-the-budget-resolution=yphysician-fee-freeze=nClass=democrat219Bestrulesfound:1.adoption-of-the-budget-resolution=yphysician-fee-freeze=n219==>Class=democrat219conf:(1)2.physician-fee-freeze=n247==>Class=democrat245conf:(0.99)3.adoption-of-the-budget-resolution=yClass=democrat231==>physician-fee-freeze=n219conf:(0.95)4.Class=democrat267==>physician-fee-freeze=n245conf:(0.92)5.adoption-of-the-budget-resolution=y253==>Class=democrat231conf:(0.91)6.aid-to-nicaraguan-contras=y242==>Class=democrat218conf:(0.9)結果分析：該樣本數據，數據統(tǒng)計數435個，17個屬性，進行了10輪測試最小支持度為0.5，即最少需要218個實例；最小置信度為0.9；進行了10輪搜索，頻繁1項集12個，頻繁2項集4個，頻繁3項集1個；分類算法-隨機樹分析操作步驟：點擊“Explorer”按鈕，彈出“WekaExplorer”控制界面選擇“Classify”選項卡；點擊“Choose”按鈕，選擇“trees”“RandomTree”規(guī)則設置Cross-validation為10次點擊左側“Start”按鈕執(zhí)行結果：===Runinformation===Scheme:weka.classifiers.trees.RandomTree-K0-M1.0-S1Relation:voteInstances:435Attributes:17handicapped-infantswater-project-cost-sharingadoption-of-the-budget-resolutionphysician-fee-freezeel-salvador-aidreligious-groups-in-schoolsanti-satellite-test-banaid-to-nicaraguan-contrasmx-missileimmigrationsynfuels-corporation-cutbackeducation-spendingsuperfund-right-to-suecrimeduty-free-exportsexport-administration-act-south-africaClassTestmode:10-foldcross-validation===Classifiermodel(fulltrainingset)===RandomTree==========el-salvador-aid=n|physician-fee-freeze=n||duty-free-exports=n|||anti-satellite-test-ban=n||||synfuels-corporation-cutback=n|||||crime=n:republican(0.96/0)|||||crime=y||||||handicapped-infants=n:democrat(2.02/0.01)||||||handicapped-infants=y:democrat(0.05/0)||||synfuels-corporation-cutback=y|||||handicapped-infants=n:democrat(0.79/0.01)|||||handicapped-infants=y:democrat(2.12/0)|||anti-satellite-test-ban=y||||adoption-of-the-budget-resolution=n|||||handicapped-infants=n:democrat(1.26/0.01)|||||handicapped-infants=y:republican(1.25/0.25)||||adoption-of-the-budget-resolution=y|||||handicapped-infants=n||||||crime=n:democrat(5.94/0.01)||||||crime=y:democrat(5.15/0.12)|||||handicapped-infants=y:democrat(36.99/0.09)||duty-free-exports=y|||crime=n:democrat(124.23/0.29)|||crime=y||||handicapped-infants=n:democrat(16.9/0.38)||||handicapped-infants=y:democrat(8.99/0.02)|physician-fee-freeze=y||immigration=n|||education-spending=n||||crime=n:democrat(1.09/0)||||crime=y:democrat(1.01/0.01)|||education-spending=y:republican(1.06/0.02)||immigration=y|||synfuels-corporation-cutback=n||||religious-groups-in-schools=n:republican(3.02/0.01)||||religious-groups-in-schools=y:republican(1.54/0.04)|||synfuels-corporation-cutback=y:republican(1.06/0.05)el-salvador-aid=y|synfuels-corporation-cutback=n||physician-fee-freeze=n|||handicapped-infants=n||||superfund-right-to-sue=n|||||crime=n:democrat(1.36/0)|||||crime=y||||||mx-missile=n:republican(1.01/0)||||||mx-missile=y:democrat(1.01/0.01)||||superfund-right-to-sue=y:democrat(4.83/0.03)|||handicapped-infants=y:democrat(8.42/0.02)||physician-fee-freeze=y|||adoption-of-the-budget-resolution=n||||export-administration-act-south-africa=n|||||mx-missile=n:republican(49.03/0)|||||mx-missile=y:democrat(0.11/0)||||export-administration-act-south-africa=y|||||duty-free-exports=n||||||mx-missile=n:republican(60.67/0)||||||mx-missile=y:republican(6.21/0.15)|||||duty-free-exports=y||||||aid-to-nicaraguan-contras=n|||||||water-project-cost-sharing=n||||||||mx-missile=n:republican(3.12/0)||||||||mx-missile=y:democrat(0.01/0)|||||||water-project-cost-sharing=y:democrat(1.15/0.14)||||||aid-to-nicaraguan-contras=y:republican(0.16/0)|||adoption-of-the-budget-resolution=y||||anti-satellite-test-ban=n|||||immigration=n:democrat(2.01/0.01)|||||immigration=y||||||water-project-cost-sharing=n|||||||mx-missile=n:republican(1.63/0)|||||||mx-missile=y:republican(1.01/0.01)||||||water-project-cost-sharing=y|||||||superfund-right-to-sue=n:republican(0.45/0)|||||||superfund-right-to-sue=y:republican(1.71/0.64)||||anti-satellite-test-ban=y|||||mx-missile=n:republican(7.74/0)|||||mx-missile=y:republican(4.05/0.03)|synfuels-corporation-cutback=y||adoption-of-the-budget-resolution=n|||superfund-right-to-sue=n||||anti-satellite-test-ban=n|||||physician-fee-freeze=n:democrat(1.39/0.01)|||||physician-fee-freeze=y||||||water-project-cost-sharing=n:republican(1.01/0)||||||water-project-cost-sharing=y:democrat(1.05/0.05)||||anti-satellite-test-ban=y:democrat(1.13/0.01)|||superfund-right-to-sue=y||||education-spending=n|||||physician-fee-freeze=n||||||crime=n:democrat(0.09/0)||||||crime=y|||||||handicapped-infants=n:democrat(1.01/0.01)|||||||handicapped-infants=y:democrat(1/0)|||||physician-fee-freeze=y||||||immigration=n|||||||export-administration-act-south-africa=n:democrat(0.34/0.11)|||||||export-administration-act-south-africa=y||||||||crime=n:democrat(0.16/0)||||||||crime=y|||||||||mx-missile=n||||||||||handicapped-infants=n:republican(0.29/0)||||||||||handicapped-infants=y:republican(1.88/0.87)|||||||||mx-missile=y:democrat(0.01/0)||||||immigration=y:republican(1.01/0)||||education-spending=y|||||physician-fee-freeze=n||||||handicapped-infants=n:democrat(1.51/0.01)||||||handicapped-infants=y:democrat(2.01/0)|||||physician-fee-freeze=y||||||crime=n:republican(1.02/0)||||||crime=y|||||||export-administration-act-south-africa=n||||||||handicapped-infants=n|||||||||immigration=n||||||||||mx-missile=n|||||||||||water-project-cost-sharing=n:democrat(1.01/0.01)|||||||||||water-project-cost-sharing=y:republican(1.81/0)||||||||||mx-missile=y:democrat(0.01/0)|||||||||immigration=y||||||||||mx-missile=n:republican(2.78/0)||||||||||mx-missile=y:democrat(0.01/0)||||||||handicapped-infants=y|||||||||mx-missile=n:republican(2/0)|||||||||mx-missile=y:democrat(0.4/0)|||||||export-administration-act-south-africa=y||||||||mx-missile=n:republican(8.77/0)||||||||mx-missile=y:democrat(0.02/0)||adoption-of-the-budget-resolution=y|||anti-satellite-test-ban=n||||handicapped-infants=n|||||crime=n:democrat(2.52/0.01)|||||crime=y:democrat(7.65/0.07)||||handicapped-infants=y:democrat(10.83/0.02)|||anti-satellite-test-ban=y||||physician-fee-freeze=n|||||handicapped-infants=n||||||crime=n:democrat(2.42/0.01)||||||crime=y:democrat(2.28/0.03)|||||handicapped-infants=y:democrat(4.17/0.01)||||physician-fee-freeze=y|||||mx-missile=n:republican(2.3/0)|||||mx-missile=y:democrat(0.01/0)Sizeofthetree:143Timetakentobuildmodel:0.01seconds===Stratifiedcross-validation======Summary===CorrectlyClassifiedInstances40793.5632%IncorrectlyClassifiedInstances286.4368%Kappastatistic0.8636Meanabsoluteerror0.0699Rootmeansquarederror0.2379Relativeabsoluteerror14.7341%Rootrelativesquarederror48.8605%TotalNumberofInstances435===DetailedAccuracyByClass===TPRateFPRatePrecisionRecallF-MeasureROCAreaClass0.9550.0950.9410.9550.9480.966democrat0.9050.0450.9270.9050.9160.967republicanWeightedAvg.0.9360.0760.9360.9360.9350.966===ConfusionMatrix===ab<--classifiedas25512|a=democrat16152|b=republican結果分析：該樣本數據，數據統(tǒng)計數435個，17個屬性，進行了10輪交叉驗證隨機樹長143正確分類共407個，正確率達93.5632%錯誤分類28個，錯誤率6.4368%測試數據正確率很好分類算法-隨機樹分析操作步驟：點擊“Explorer”按鈕，彈出“WekaExplorer”控制界面選擇“Classify”選項卡；點擊“Choose”按鈕，選擇“trees”“J48”規(guī)則設置Cross-validation為10次點擊左側“Start”按鈕執(zhí)行結果：===Runinformation===Scheme:weka.classifiers.trees.J48-C0.25-M2Relation:voteInstances:435Attributes:17handicapped-infantswater-project-cost-sharingadoption-of-the-budget-resolutionphysician-fee-freezeel-salvador-aidreligious-groups-in-schoolsanti-satellite-test-banaid-to-nicaraguan-contrasmx-missileimmigrationsynfuels-corporation-cutbackeducation-spendingsuperfund-right-to-suecrimeduty-free-exportsexport-administration-act-south-africaClassTestmode:10-foldcross-validation===Classifiermodel(fulltrainingset)===J48prunedtree------------------physician-fee-freeze=n:democrat(253.41/3.75)physician-fee-freeze=y|synfuels-corporation-cutback=n:republican(145.71/4.0)|synfuels-corporation-cutback=y||mx-missile=n|||adoption-of-the-budget-resolution=n:republican(22.61/3.32)|||adoption-of-the-budget-resolution=y||||anti-satellite-test-ban=n:democrat(5.04/0.02)||||anti-satellite-test-ban=y:republican(2.21)||mx-missile=y:democrat(6.03/1.03)NumberofLeaves: 6Sizeofthetree: 11Timetakentobuildmodel:0.06seconds===Stratifiedcross-validation======Summary===CorrectlyClassifiedInstances41996.3218%IncorrectlyClassifiedInstances163.6782%Kappastatistic0.9224Meanabsoluteerror0.0611Rootmeansquarederror0.1748Relativeabsoluteerror12.887%Rootrelativesquarederror35.9085%TotalNumberofInstances435===DetailedAccuracyByClass===TPRateFPRatePrecisionRecallF-MeasureROCAreaClass0.970.0480.970.970.970.971democrat0.9520.030.9520.9520.9520.971republicanWeightedAvg.0.9630.0410.9630.9630.9630.971===ConfusionMatrix===ab<--classifiedas2598|a=democrat8160|b=