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張家口SEO:“TF-IDF”算法的的概念與網站SEO運用

文章分類:網站SEO技術 來源:張家口SEO 作者:SEO顧問 時間:2018-06-05 05:32:35 閱讀:


[導讀]:張家口SEO顧問在本文用簡單的網站SEO實例說明,談談我對“TF-IDF”算法的的概念與網站SEO運用的一些見解。

TF-IDFSHIYIZHONGTONGJIFANGFA,YONGYIPINGGUYIZICIDUIYUYIGEWENJIANJIHUOYIGEYULIAOKUZHONGDEQIZHONGYIFENWENJIANDEZHONGYAOCHENGDU。ZICIDEZHONGYAOXINGSUIZHUTAZAIWENJIANZHONGCHUXIANDECISHUCHENGZHENGBIZENGJIA,DANTONGSHIHUISUIZHUTAZAIYULIAOKUZHONGCHUXIANDEPINLVCHENGFANBIXIAJIANG。TF-IDFJIAQUANDEGEZHONGXINGSHICHANGBEISOUSUOYINQINGYINGYONG,ZUOWEIWENJIANYUYONGHUCHAXUNZHIJIANXIANGGUANCHENGDUDEDULIANGHUOPINGJI。CHULETF-IDFYIWAI,YINTEWANGSHANGDESOUSUOYINQINGHUANHUISHIYONGJIYULIANJIEFENXIDEPINGJIFANGFA,YIQUEDINGWENJIANZAISOUXUNJIEGUOZHONGCHUXIANDESHUNXU。

“TF-IDF”算法的原理

TFIDFDEZHUYAOSIXIANGSHI:RUGUOMOUGECIHUODUANYUZAIYIPIANWENZHANGZHONGCHUXIANDEPINLVTFGAO,BINGQIEZAIQITAWENZHANGZHONGHENSHAOCHUXIAN,ZERENWEICICIHUOZHEDUANYUJUYOUHENHAODELEIBIEQUFENNENGLI,SHIHEYONGLAIFENLEI。TFIDFSHIJISHANGSHI:TF * IDF,TFCIPIN(Term Frequency),IDFNIXIANGWENJIANPINLV(Inverse Document Frequency)。TFBIAOSHICITIAOZAIWENDANGdZHONGCHUXIANDEPINLV。IDFDEZHUYAOSIXIANGSHI:RUGUOBAOHANCITIAOtDEWENDANGYUESHAO,YEJIUSHInYUEXIAO,IDFYUEDA,ZESHUOMINGCITIAOtJUYOUHENHAODELEIBIEQUFENNENGLI。

張家口SEO:“TF-IDF”算法的的概念與網站SEO運用

万博体彩 RUGUOMOUYILEIWENDANGCZHONGBAOHANCITIAOtDEWENDANGSHUWEIm,ERQITALEIBAOHANtDEWENDANGZONGSHUWEIk,XIANRANSUOYOUBAOHANtDEWENDANGSHUn=m+k,DANGmDADESHIHOU,nYEDA,ANZHAOIDFGONGSHIDEDAODEIDFDEZHIHUIXIAO,JIUSHUOMINGGAICITIAOtLEIBIEQUFENNENGLIBUQIANG。

万博体彩 DANSHISHIJISHANG,RUGUOYIGECITIAOZAIYIGELEIDEWENDANGZHONGPINFANCHUXIAN,ZESHUOMINGGAICITIAONENGGOUHENHAODAIBIAOZHEGELEIDEWENBENDETEZHENG,ZHEYANGDECITIAOYINGGAIGEITAMENFUYUJIAOGAODEQUANZHONG,BINGXUANLAIZUOWEIGAILEIWENBENDETEZHENGCIYIQUBIEYUQITALEIWENDANG。ZHEJIUSHIIDFDEBUZUZHICHU. ZAIYIFENGEIDINGDEWENJIANLI,CIPIN(term frequency,TF)ZHIDESHIMOUYIGEGEIDINGDECIYUZAIGAIWENJIANZHONGCHUXIANDEPINLV。ZHEGESHUZISHIDUICISHU(term count)DEGUIYIHUA,YIFANGZHITAPIANXIANGCHANGDEWENJIAN。(TONGYIGECIYUZAICHANGWENJIANLIKENENGHUIBIDUANWENJIANYOUGENGGAODECISHU,ERBUGUANGAICIYUZHONGYAOYUFOU。)

“TF-IDF”算法的的概念與網站SEO運用

一、TF詞頻的概念與SEO建議

万博体彩 TFSHIZHICIPIN,CHAXUNDEGUANJIANCIZAIWENDANGZHONGCHUXIANDECISHUTONGJI。XIANGGUANWENDANGSHIZHEYANGJIESHAODE,JIASHECHAXUNGUANJIANCIZAITONGYIGEWENDANGZHONGCHUXIANDECISHUYUEDUO,DAIBIAOZHEGEGUANJIANCIYUEZHONGYAO,YUENENGDAIBIAOWENDANGDEZHUTIYISI,WENZHANGZHUTIYUGUANJIANCIYISIYUEJIEJIN,NEIMEZUOSEORUHEYUNYONGZHEGEZHISHIDIANNI?

JIASHEYOUYIPIANWENZHANGDEBIAOTISHI:“SEOFUWUWAIBAO”,CONGZIMIANSHANGLIJIE,WENZHANGZHUYAOSHIYISEOFUWUWEIHEXIN,“WAIBAO”WEITUOZHANCI。JIASHEWENZHANGNEIRONGLISEOFUWUCHUXIAN20CI,FUWUCHUXIAN25CI,WAIBAOCHUXIAN10CI,ANZHAOTFCIPINDEGUIZE,NEIMESEOFUWUSHIWENZHANGZHUTI,ZHEGEHENHAOLIJIE。

SHIJISHANGYOUXIESHIHOUXIEWENZHANGSHI,ZAIYISIHENMINGQUEDEQINGKUANGXIA,HUISHENGLVEZHUCI。BIRUSEOFUWUWAIBAOJIAGE、SEOFUWUWAIBAOLIUCHENG、SEOFUWUWAIBAOGONGSIJIESHAO,HUISUOXIECHENG:WAIBAOJIAGE、WAIBAOLIUCHENG、WAIBAOGONGSIJIESHAO。ZHEYANGHUIDAOZHIWAIBAOCHUXIANDECISHUDAYUFUWU,TFCIPINZEHUIRENWEIWAIBAOSHIZHUTI,CHUXIANCUOWUDEPANDUAN。

万博体彩 NEIJIRANSHIZHEYANG,ZUOSEOGUANJIANCIBUJUDESHIHOU,YINGGAIYAOSHIDANGKAOLVZHUGUANJIANCIDECHUXIANPINLVDAYUFUCI。DANGRANSOUSUOYINQINGPANDUANWANGYEZHUTIYOUHENDUOWEIDU,ZHELIZHISHIDANCONGTFCIPINDEJIAODUKAOLV,GERENRENWEIZHEYANGZUOHUISUODUANSOUSUOYINQINGPANDUANWANGYEZHUTIDESHIJIAN,DUISEOLAISHUOSHIYOULIDE。

第二、如何快速理解“IDF逆文檔頻率”

ZHEGEGAINIANRUGUOKANWENDANGDEHUAYOUDIANNANLIJIE,DANGCHUBIZHEKANBAIDUBAIKEHAOJICICAIMINGBAI。SHEJIDAOFUZADEGONGSHIZAIZHELIJIUBUJIANG,JIEHETFYIQILAILIJIE,TF-IDFDEYISISHI,YIPIANWENZHANGZHONGMOUGUANJIANCICHUXIANDECISHUYUEDUO,QIEZAISOUSUOYINQINGDEZILIAOKUZHONGBAOHANGAIGUANJIANCIWENDANGSHUYUESHAO,ZESHUOMINGZHEGEGUANJIANCIYUENENGDAIBIAOCIWANGYEDEZHUTI。

JUGELIZILAISHUOMING,JIASHEYOUYIPIANWENZHANG,YOULIANGGEGUANJIANCI:“SEOYOUHUA”HE“SEOFUWU”,ZAIWENZHANGZHONG,ZHELIANGGEGUANJIANCICHUXIANDEZILIAODOUSHI20CI,DANSHIZAIBAIDUDEZILIAOKUZHONG,BAOHANSEOYOUHUADEWENDANGZONGGONGYOUYIQIANWANGE,BAOHANSEOFUWUDEWENDANGYOUWUBAIWANGE,NEIMEZESHUOMING,SEOFUWUYUENENGDAIBIAOZHEWENZHANGDEYISI。HUOZHESOUSUOYINQINGZILIAOKUZHONGBAOHANGUANJIANCIDEWENDANGSHULIANGYIYANG,WENZHANGZHONGCHUXIANCISHUYUEDUODEGUANJIANCIYUENENGDAIBIAOWANGYEZHUTI。

從SEO的層面講,IDF這個值是客觀存在的

BUBIQUSHENJIU,ZHIYAOMINGBAIBUTONGGUANJIANCIZHIJIANDEWENDANGSHUDUOSHAOJIUXING,YIBAIDUWEILI,SOUSUORENHEYIGEGUANJIANCI,ZAISOUSUOKUANGXIAMIANHUIYOUYIGE:“BAIDUWEININZHAODAOXIANGGUANJIEGUOYUEXXXGE”DEZHEYANGJUZI,LIMIANDESHUZHIKEYIZUOWEIWENDANGSHUCANKAO。MEIGESOUSUOYINQINGDEBAOHANGUANJIANCIDEWENDANGSHUKENENGBUYIYANG,DANSHIZHENGTIDEXIANGDUIBILIZHIYINGGAISHICHABUDUODE。ERQIESUIZHUSHIJIANDETUIYI,WENDANGSHUYEHUIBUDUANFASHENGGAIBIAN。

GUANYUTF-IDFXIANGSIDUJISUANGUIZEDEJIANGJIE,JIUFENXIANGDAOZHELI,TANGSHANXINXUNKEJISEOGUWENZHUANZHUSEOZHENGZHANYOUHUAFUWU,AIZHANYANSOUSUOYINQINGSUANFA,HUANYINGYUWOJIAOLIUXUEXI。

標題:張家口SEO:“TF-IDF”算法的的概念與網站SEO運用
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