查找引擎樹立網(wǎng)頁索引數(shù)據(jù)庫后，當(dāng)用戶輸入關(guān)鍵詞并進(jìn)行查找時，查找體系程序會從網(wǎng)頁索引數(shù)據(jù)庫中找到符合該關(guān)鍵詞的一切相關(guān)網(wǎng)頁。由于一切相關(guān)網(wǎng)頁針對該關(guān)鍵詞的相關(guān)度早已算好了，所以只需要依照相關(guān)度數(shù)值排序，相關(guān)度越高，排名就越靠前。
頁面關(guān)鍵詞呈現(xiàn)的方位會被查找引擎抓取并記錄到索引庫中。會對查找引擎排名形成影響的關(guān)鍵詞方位包括標(biāo)題
標(biāo)簽、<H1>標(biāo)簽等。</p><p>一般來說，關(guān)鍵詞在頁面中呈現(xiàn)的頻率越高，密度越大，闡明頁面與查找詞的相關(guān)性越高，那么網(wǎng)頁的排名也就越好。可是，假如故意形成頁面關(guān)鍵詞堆積，頁面不只不會有較好的排名，并且會遭到查找引擎的賞罰。所以，在進(jìn)行頁面內(nèi)容優(yōu)化的時分，要注意關(guān)鍵詞的密度、頻率都不要太大。</p><p>頁面的鏈接也影響這關(guān)鍵詞的相關(guān)性。假如頁面中有較多的查找詞為錨文本鏈接，就闡明頁面的相關(guān)性比較強(qiáng)，這會對查找引擎相關(guān)性的核算產(chǎn)生影響。</p><p>相關(guān)性核算結(jié)束，查找引擎或許還有一些過濾算法用于對排名進(jìn)行調(diào)整。盡管這些過濾算法包括對頁面做弊嫌疑的斷定，相關(guān)性較高的頁面理應(yīng)排在查找成果的前面，可是收索引擎的過濾算法可在最終的排名中把網(wǎng)站的排名調(diào)整到后邊去。通過相關(guān)性算法、過濾算法之后，一切的<a href="http://jinyejixie.com/sosuo.html">關(guān)鍵詞排名</a>都斷定了，排名程序調(diào)用原始頁面信息，并把這些信息在查找成果中顯示出來。</p> <p>
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