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搜索引擎鏈接分析中的鏈接優(yōu)化

感謝Lenny投稿

在網(wǎng)站優(yōu)化中，常常提到的“內(nèi)容為王，鏈接為皇”現(xiàn)在已經(jīng)不止是這么兩點(diǎn)了，另外還有用戶體驗(yàn)綜合因素在內(nèi)，內(nèi)容為王，鏈接為皇，加上用戶體驗(yàn)其實(shí)就是三代搜索引擎的各自看重點(diǎn)，其中鏈接分析也算是運(yùn)用得最火的技術(shù)，在很多黑帽SEO中也有許多技巧都是根據(jù)鏈接分析的漏洞來放大利用。今天成都SEO就來總結(jié)一下搜索引擎鏈接分析的算法。

搜索引擎鏈接分析中最重要的兩個(gè)算法要屬于PageRank和HITS算法了，兩個(gè)分別是從隨機(jī)游走模型和子集傳播模型兩大模型來計(jì)算鏈接權(quán)重的傳遞方式。

搜索引擎鏈接分析中的鏈接優(yōu)化 SEO 好文分享第1張

先來看看PageRank算法，PageRank算法是隨機(jī)游走模型發(fā)展來的，PageRank主要是考慮入鏈數(shù)量和網(wǎng)頁質(zhì)量兩個(gè)因素來判斷一個(gè)網(wǎng)頁的重要性。但是由于PageRank沒有考慮到主題相關(guān)性的問題，然后就延伸出了主題敏感PageRank算法，也叫作Topic Sensitive PageRank，加強(qiáng)了主題相關(guān)性鏈接的權(quán)重值。同時(shí)又有人研究出了智能游走模型和偏置游走模型兩個(gè)鏈接算法，這兩個(gè)算法彌補(bǔ)了PageRank的隨機(jī)式，因?yàn)樵谡Ｈ藶g覽網(wǎng)頁時(shí)不可能是隨機(jī)點(diǎn)擊頁面上的鏈接，而是相關(guān)性的鏈接獲得點(diǎn)擊的可能性更大。

然后是子集傳播模型下的延伸：HITS算法。HITS算法定義了兩個(gè)頁面，分別是Hub頁面和Authority頁面，Hub頁面指包含很多高質(zhì)量Authority頁面鏈接的頁面，比如hao123就是這類頁面；Authority頁面是某個(gè)領(lǐng)域和話題相關(guān)的高質(zhì)量頁面，類似于SEO領(lǐng)域的SEOWHY，搜索引擎里的百度，Google。HITS就是相互扶持，一個(gè)好的Hub頁面必定指向很多好的Authority頁面，一個(gè)好的Authority頁面必定有很多好的Hub頁面指向。

HITS算法的問題還是比較明顯的，比如很容易被惡意利用，結(jié)構(gòu)不穩(wěn)定，計(jì)算效率低等原因，后來也就引申出了PHITS算法，這里就不再多做說明了。

鑒于PageRank算法和HITS算法的優(yōu)缺點(diǎn)，又研究出了SALSA算法，主要利用了HITS算法的相關(guān)性特點(diǎn)，同時(shí)利用了PageRank算法的隨機(jī)游走模型，也是目前鏈接分析算法效果最好的算法之一了。

感謝Lenny投稿，文章地址：http://xlenny.com/network/700.html

來源：盧松松博客

Public @ 2011-02-22 16:21:57

PageRank與TrustRank影響因素分析

PageRank（PR）里的page不是指網(wǎng)頁，而是指Google創(chuàng)始人拉里?佩奇（Larry Page），是他在2001年申請(qǐng)的專利中以自己名字命名的，Google的PageRank根據(jù)網(wǎng)站的外部鏈接和內(nèi)部鏈接的數(shù)量和質(zhì)量來衡量網(wǎng)站的價(jià)值。TrustRank（信任指數(shù)）是2006年雅虎申請(qǐng)的一項(xiàng)專利，Trust Rank是用來檢測垃圾網(wǎng)站的，但現(xiàn)在的搜索引擎排名算法中，常常影響大部分網(wǎng)站的整體排

Public @ 2015-02-25 15:39:09

HITS鏈接分析算法

威海鏈接原理威海HITS算法
2795

HITS(Hyperlink - Induced Topic Search)鏈接分析算法誕生在1997年，該算法是由康奈爾大學(xué)中的一位博士提出，并且該算法沿用于全球多個(gè)搜索引擎當(dāng)中。當(dāng)然，不同的搜索引擎針對(duì)于該算法的側(cè)重點(diǎn)和內(nèi)部公式都有不一的算法結(jié)構(gòu)調(diào)整，并且HITS算法也是鏈接分析中最為重要的基礎(chǔ)算法之一。對(duì)于目前國內(nèi)的整體搜索引擎而言，百度作為國內(nèi)的搜索引擎領(lǐng)頭羊，我會(huì)帶著HITS的公開文檔針

Public @ 2009-11-28 15:39:11

搜索引擎鏈接分析中的鏈接優(yōu)化

鏈接優(yōu)化是指在鏈接分析中對(duì)鏈接進(jìn)行優(yōu)化，以提高網(wǎng)站在搜索引擎結(jié)果頁面上的排名。以下是一些鏈接優(yōu)化的建議： 1. 外部鏈接優(yōu)化：通過增加外部鏈接指向網(wǎng)站來提高網(wǎng)站的權(quán)重和流量。需要注意的是，外部鏈接應(yīng)該來自于高質(zhì)量的網(wǎng)站，并且應(yīng)該與網(wǎng)站內(nèi)容有關(guān)。 2. 內(nèi)部鏈接優(yōu)化：在網(wǎng)站內(nèi)部增加鏈接能夠提高網(wǎng)站內(nèi)部的鏈接深度和網(wǎng)頁之間的關(guān)聯(lián)性，從而增加搜索引擎對(duì)網(wǎng)站的信任度。 3. 關(guān)鍵詞鏈接優(yōu)化：通過在鏈

Public @ 2023-06-23 02:50:14

淺談搜索引擎的核心算法

外鏈?zhǔn)撬阉饕嫠惴ㄖ校袛嗑W(wǎng)站權(quán)重高低的重要指標(biāo)，當(dāng)用戶在搜索框中輸入關(guān)鍵時(shí)，搜索引擎面對(duì)大量擁有相同內(nèi)容的網(wǎng)頁，首先需要解決的就是，通過哪些參數(shù)覺得網(wǎng)頁排名的高低。今天，筆者就簡單介紹外鏈建設(shè)中，比較有名的核心算法：PageRank算法、Hilltop算法、Direct Hit 算法。第一種算法、PageRank算法1998年，Sergey Brin和Lawrence Page提出了PageRa

Public @ 2016-10-16 16:21:57

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搜索引擎鏈接分析中的鏈接優(yōu)化

PageRank與TrustRank影響因素分析

HITS鏈接分析算法

搜索引擎鏈接分析中的鏈接優(yōu)化

淺談搜索引擎的核心算法

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