CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '91359ca54c228932',cH: 'eb__iVL3O5ydbtz_rDqkOwtgCezp4qdeSBjzf7kM1Qw-1739793572-1.2.1.1-BbuUrtEW6u3W5UhcxGEz_GsPcVMj._EAVo7_ERJGhSIo9NBPOtDwDgaCTzFAyE5R',cUPMDTk: "\/abstracts\/search?q=web%20mining&__cf_chl_tk=a2ZbDdj..rXAdT4bPjFmluWvN7TRo1KLuCQoJxs431s-1739793572-1.0.1.1-wJl_b822vQ_JtotMtgj_g71ZACs_CEP60mxYOXypCjA",cFPWv: 'b',cITimeS: '1739793572',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=web%20mining&__cf_chl_f_tk=a2ZbDdj..rXAdT4bPjFmluWvN7TRo1KLuCQoJxs431s-1739793572-1.0.1.1-wJl_b822vQ_JtotMtgj_g71ZACs_CEP60mxYOXypCjA",md: "1sNaZN3eflr6CKGkoNB2ZSaOkLPo5JrVSpOiozrl1h0-1739793572-1.2.1.1-hzNeDRXXxnR6M0tWj.H96O.ePP9KTzqjUE1XX3FHlhYoNJW_c0SAHGVOG_S7ZRRrUyUgALM46uBm.HpbOAlopc7dRPv8Nm9bfKoUsLHTu_IHA1b9UOUOkq_iUbFMj88Du5oomcckL2ldSKVozkJS2_dJynlX_uW5vg7nLoP41HqDN1RkBGxy3gc.MmyX31dOWxL4geg8m55Rncgn1GEAapEx.Y9wGZy8Ikw3gSF2S9z2LoSmaLrLmsmIN4lBMaMiRy.mQ67Scct0u9Uqz0Ab1hUelHNd1hFCXtvCn2XiRyKLt88d5hXGYpghJnnuJQ_LFSEurkKp2CUZB6M9e4Ipk_iNnR6p2V8mflHkOZ27mqts34_wvcPxJzn1sw0MKbPH84qO9TNlrXQna35NAYpc0WLI7vOELdy_QaGJXsGgPCICBaYFQoCj.FY_8T1ewl92d9yY7497dQM1liSZXj1OYsyRQl3WkOr9dxld87U1z1rH1VYjk44HetbWgHJaLMb7EL7JKZRJs6DYLO9GtBKIFgQ_ig9VHHZkDV19ug3RGSxW549xTp1XMVJY9JVmLqdXLpYMI0YE__3wsulhU_daZGw59bJ63t.b9cNm896Y8yarWMil3GsnqgT.MbOi1fQKe_4Jj3qSgA27mmANNB7BxqapSGzIS_0N8IT0fI258SXeVoePr195AkYhzHuhL_uNBUwI5uXDhCHFwQRn4VVIJYu_hVOsSpmi_EusoRokVEZ.zfInyPu3jyVPS8GSRcbz9OhbLUTv5TaJtIhJRGJc260c4YBWCD3CMX9qrscSEnPqp_oZtOmQgqbzLqLvvhenglb0EGYIj2S3BQmb_JK43IAiaXuaQIDdiyRg59WXdHujArzHwGe5FkX5r1Qxw9igNQp4H0QC6Jdq2FaMh8Rd71ZgOToN4mHnoYDjJiXNO1p_E5axQFUwPZ9QkG_GOeCLECftAk8jrBI5P.yNkB0yt3lGYqBSY83tQIunFtl_jtdovy0Hi3gGi74zLH_SM_EGpE7yfwvIHFI0KP2.c8CEVgO6G6FDG2pLrZWkhQf5TOPJDhTp80ya2kpefubVDIJkgUO2mgUTmgACaqXi_scYebQ7wyYOxy9MbvSqeqlkSMhG.gzWWVgx0ZJ_6V0.Rp9eULE93ZkO3Xjbk6cN1hxy6hb26tOVW_jt8K6.oIPdEMgHxy0GiwtHNH8aNM5Rga8ZeQwfD19_Y38JiBbNwMQifh7rB8k9BMntoU9MbNGO2qDXAjKulmd67TcHSBU2jEH6muCeqcsURnBgl_HHj4.Aai1TaiielcbFLmEnaHJOhAi2yIBIm12M9hDXXNMV5_ZMWsGVeCufT.Y8dT.ghml3NnOC.kCuHPGqPX_EWs9RCRWT25fvPhebuMa1v86w7yCkZWvd6ciGps12kyPiNmBiGrXk6V.chI1QPETsQAGeC7GaHDeEx8piXlayX6CHuN4dGMuwSPmNqVU2ptVudJN34ao2rec5SisUnur9SXU4qYbsD9AItfR.ps7CwKU8S37tKZfOD8BLQGnzcRaABjdvHmw_xEP4EwItMC6Chbhu34dn1s6zLwyDDjupqgRyrZYnAk2qsiXyocrbHtsUAzsB3iUo3ung0fY7LEFFKmaxtxAVO4ew80KrTBlwQCUEpU9yd5kHNF3tVQR6S9w7K7.ch3SHXd3EnmGu5OldBONcekzeT0a._kbfLWG9eTp7s5Rdun9sg54N4zGS0mmlEisZD8GMy68b2Bp3td_RbqswCVaWbd8iGiM5VxHPMRMNV8lC0qA9x6aUxSh8rqTQimQqBM7erFouVndbVfGcnLcuSIioDDW684gMIKzgSt_.ooO_ixXYsODqrAadoGJM.y5QrjDJd6XmAxQBdA0bFjIW_aY5LTyo2KAmtGe8dXRGFEXWnGGQ9BfdDWD0zsUQjBesHQ",mdrd: ".HbKvpiIURxzXu0lhxKI0Z_HL0QC4P7ICPL.1vvdKPU-1739793572-1.2.1.1-D6d_Bhx6w9dug7vG.r7VAzmvBmruF_UfuMIFZb7pVBeV1ZuqpRifdF_nCjQto2VXvZK.DeFmqtkFDmIyMEf97LfwJ_hQAelxOEhg3gwikP5617JkogWta5ts32pi5i2mPaOBlizbMnH4bUpC9sQB0k85upEt1jlwDtUY8mX1mRAElOJMPIq4ZRJ6y68ou549Ux5nGNXG4vcy.WqgvobWG5u6UIGHxKSOlNrwum4PXyd2CfqjVyebDQNQB6z3mcahTiNJ4dP.fe04aHWZgQ5x4Wmera0.5wYY_Ih_96g4fvjCnjCRSv7o7NNzkWLJIO8lPohtt3wotDrPwQ4nGHwdaJaV0eesRD1sxJbpd_GHEfH14oobDaZXfxb0b4Kar0qu1Hso_TagA4NqRDO54uaCke.jvJCDE2k4rUaasnLNk9QdT77pZQlfcDlrhPT1hW3s5QlC7J.qi6RxmZUAucK7BpD0adH9BCLLGiMgwaagKC.40GpNWzec8YUBxdwy6FLwUv5kqo6PwwaomJ0sAegwxvKut.t674EqMDM6G2B4Dwl8LVryFwH1jHPFrounzSjYfBBxP_7dZV8vtu.r4SuhoaMM7pneTylbOb.zqP9sKYJCDcfLjcIv6wuyr84vEDqUKVqvoatJndOMq36Ytyc86y2_lFJOt53vVdpzsc_5Qcq8sdD7Gyof6W8aFfr2vEqCNAKNfXXpS_xwYc9K3FOtU4eP9cTXl4iIqgcvmxbQW49ZriGQhoUm0Eyr.4HrF4KuW86GsyalMeE.XQ_ZwYurWg5S0ZH7k0OpHINrtQpF8afSoUnflHJtR1bv_I2nlX.3ocDQ4QhruSwyvMRpbBBNy.tYlDzSs09SDJDRZ.cCrc4Lgya0Bo05yG_yNQM_Z68WkazwIMouW0o1SMGcit1Fqh_SO1k9LmJIuV._wBm8pyPO2XDOOgcQ77YHK0TL3g_EqGxL5sbDIrBi9iZVsDWo7CZseBmZfP17rPFK3vP2XDQ1u8T8qDlgXF1iw8.J3SGyvKV.Ihh5IwZf5H90vS2geit7vqmsdDrFbijx4FHOSbsX2vhZRcm1HhXh2FBPUUOunym5dPchUaKcB.z17WievQsI4COeNKJfPQ.5dW1RzCqM2wvIBr7bgk1cr.ufwvb8yFWKQTIYsl.Q2_6RFGi898UNwE4bY_4MHRxK7DE_Wbb0WLr3BWlNn7K1KfBX.ftmidBhXPlkaBjjE1uhU7Y5I0Hn6Dr1nz.vzRaO9VCBdZDUDKSPshfMHXbJGNs7AO2w618XxcGGFDD89CB5qnU6iuVBxETX9pBUebI_QbwgQAxtlOQ2twm4iAsm1vir3tTr45UdZNVy1OS0mfA7tYsXJm1K3mqiBZPMc0enbj7xwKLwELJDwBFZ4B6oYtCOT_aEo85yg.5WhpKjrT6fgVP131vAZLOnhnvMHIEeXGNGAQN_Zxsk4cx.JSCiDvK23x1v00ont8GG_h2xVdODjL8luCAZUmywYvp4TyppZgnPQN5.lZ1vu47GWk9mS3CzdHCocSX7iWzwGYJUVg54.5k0Z.QHi38ABECpGubDl_PYxHywfAaNGmJNzd8eOsHH4VcG9jxNv1N.58_1_ir1Xwsfb.7k3icmOKkR4lPSyg8QSXGs.dlUfa10mh8mTe4T.UZ6vIsRWDKvL.WoXjgc5_D.zvsfaHgspZrNZZuCLsH_mlyP1tzf6f7xwfJsGHa7D3rYRZqr3oft7U.8_4UZix2yg6nw4Rm7kE8sDL_lvDJ4VS0z0v7rQH.x4.wEwkrK4YW_M2LEran5ttkr0C_JY783vx5OkYIRi9h7h22ZHoComR.8yMJlys0JyVqGjJEmQql1Ul3DGAfXumj_ZatDtsPpbV_n9AVMqrbg5qVcNyn1FWGtWg7Bx3XnYqwOjKsganXM2ctDdt0xQUbKdPBql8xM2alWRVxDB3N5Yf.GzKFN8bXRctigXtk048Wr2Iy2dlCO6eJz650Ug2LF8x_que.15A"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91359ca54c228932';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=web%20mining&__cf_chl_rt_tk=a2ZbDdj..rXAdT4bPjFmluWvN7TRo1KLuCQoJxs431s-1739793572-1.0.1.1-wJl_b822vQ_JtotMtgj_g71ZACs_CEP60mxYOXypCjA" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>