{"id":691,"date":"2026-01-03T21:26:00","date_gmt":"2026-01-03T21:26:00","guid":{"rendered":"https:\/\/www.linkauthority.eu\/?p=691"},"modified":"2025-08-08T11:52:38","modified_gmt":"2025-08-08T11:52:38","slug":"process-for-extracting-and-evaluating-words-from-web-pages","status":"publish","type":"post","link":"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/","title":{"rendered":"Process for extracting and evaluating web words"},"content":{"rendered":"<ul>\n<li>\n<p>I'll show you a simple, modular pipeline for extracting useful words and phrases from web pages.<\/p>\n<\/li>\n<li>\n<p>I compare TF-IDF, RAKE, TextRank, and embeddings\u2014without unnecessary jargon\u2014and share my thoughts at each step.<\/p>\n<\/li>\n<li>\n<p>You measure quality with precision\u2014recall, F1, NDCG\u2014and then you iterate, calmly and methodically.<\/p>\n<\/li>\n<li>\n<p>You are deploying a robust, monitored data feed with alerts for data freshness and quality.<\/p>\n<\/li>\n<li>\n<p>I provide structured examples, checklists, and a selection of ready-to-use tools.<\/p>\n<\/li>\n<\/ul>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Introduction_cas_dusage\" >Introduction to Use Cases<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Vue_densemble_du_pipeline\" >Pipeline Overview<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Collecte_extraction_du_contenu\" >Content Collection and Extraction<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Decouverte_dURLs\" >URL Discovery<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Extraction_HTML_%E2%86%92_texte\" >Extract HTML \u2192 text<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Pretraitement_linguistique\" >Linguistic Preprocessing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Methodes_dextraction_de_termes\" >Term Extraction Methods<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#TF-IDF\" >TF-IDF<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Frequences_n-grammes\" >N-gram Frequencies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#RAKE\" >RAKE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#TextRank\" >TextRank<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Embeddings_KeyBERTtransformers\" >Embeddings (KeyBERT\/Transformers)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Thematisation_LDABERTopic\" >Thematization (LDA\/BERTopic)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Priorisation_editoriale\" >Editorial Prioritization<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Evaluation_metriques\" >Metrics Assessment<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Verites_terrain\" >Real-World Insights<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Metriques_de_qualite\" >Quality Metrics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Protocole_devaluation\" >Evaluation Protocol<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Cadence_et_seuils\" >Pace and Thresholds<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Mise_en_production_monitoring\" >Production Monitoring<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Indicateurs_a_suivre\" >Key Metrics to Monitor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Conformite_et_ethique\" >Compliance and Ethics<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Exemples_structures\" >Structured Examples<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Fiche_page\" >Page Details<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Page_transactionnelle\" >Transaction Page<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Page_informationnelle\" >Information Page<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Outils_ressources\" >Tools and Resources<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#NLP\" >NLP<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Extraction\" >Extraction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Crawl\" >Crawl<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Vectorisation_themes\" >Vectorization of Themes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Evaluation_tableaux_de_bord\" >Dashboard Evaluation<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#FAQ\" >FAQ<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Comment_extraire_le_texte_propre_dune_page_web%E2%80%89\" >How do you extract the plain text from a web page?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Quelles_methodes_pour_detecter_les_mots_importants%E2%80%89\" >What are some methods for identifying important words?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Comment_mesurer_la_qualite_des_mots_extraits%E2%80%89\" >How can we measure the quality of the extracted words?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Quels_outils_utiliser_selon_mon_niveau_technique%E2%80%89\" >What tools should I use based on my technical skill level?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Glossaire\" >Glossary<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/www.linkauthority.eu\/en\/process-for-extracting-and-evaluating-words-from-web-pages\/#Checklist_rapide\" >Quick checklist<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Introduction_cas_dusage\"><\/span>Introduction to Use Cases<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When I extract words from web pages, I\u2019m looking for business value, not poetry. For you\u2014writers, data scientists, and developers\u2014these terms help identify search intent, enrich editorial briefs, feed internal search models, prioritize topics, and monitor the competition. I\u2019m keeping it simple, but I\u2019m getting to the heart of the matter, because you need to make decisions\u2014not guess.<\/p>\n<ul>\n<li>\n<p><strong>Rep\u00e9rer l\u2019intention<\/strong>, et le champ lexical dominant des concurrents, pour cibler juste.<\/p>\n<\/li>\n<li>\n<p><strong>Am\u00e9liorer les briefs<\/strong>, pour \u00e9viter des contenus creux, et gagner du temps.<\/p>\n<\/li>\n<li>\n<p><strong>Alimenter la recherche interne<\/strong>, avec des synonymes, des variantes, des expressions.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Vue_densemble_du_pipeline\"><\/span>Pipeline Overview<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Je recommande un pipeline en sept \u00e9tapes, clair, r\u00e9plicable, qui supporte l\u2019it\u00e9ration rapide.<\/p>\n<ul>\n<li>\n<p><strong>Collecte des URLs<\/strong>, sur sitemaps, logs, exports GSC, ou crawl.<\/p>\n<\/li>\n<li>\n<p><strong>Extract HTML \u2192 text<\/strong>, en retirant le chrome visuel, en gardant le sens.<\/p>\n<\/li>\n<li>\n<p><strong>Nettoyage normalisation<\/strong>, pour des tokens coh\u00e9rents, comparables.<\/p>\n<\/li>\n<li>\n<p><strong>Tokenisation lemmatisation<\/strong>, avec n-grammes judicieux, 2 \u00e0 3 mots.<\/p>\n<\/li>\n<li>\n<p><strong>M\u00e9thodes d\u2019extraction<\/strong>, adapt\u00e9es au volume, au d\u00e9lai, \u00e0 la qualit\u00e9 attendue.<\/p>\n<\/li>\n<li>\n<p><strong>\u00c9valuation it\u00e9ration<\/strong>, avec des m\u00e9triques stables, et des v\u00e9rit\u00e9s terrain.<\/p>\n<\/li>\n<li>\n<p><strong>Production Monitoring<\/strong>, pour livrer, mesurer, corriger.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Collecte_extraction_du_contenu\"><\/span>Content Collection and Extraction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Decouverte_dURLs\"><\/span>URL Discovery<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Je privil\u00e9gie une approche mixte, sobre, qui limite la charge serveur, tout en couvrant le p\u00e9rim\u00e8tre utile.<\/p>\n<ul>\n<li>\n<p><i>XML sitemaps<\/i>, rapides, fiables, souvent oubli\u00e9s, pourtant pr\u00e9cieux.<\/p>\n<\/li>\n<li>\n<p><i>Crawl<\/i> contr\u00f4l\u00e9 (profondeur, robots.txt, limites de taux), pour explorer, pas pour tout aspirer.<\/p>\n<\/li>\n<li>\n<p><i>Exports<\/i> Search Console et <i>logs<\/i>, pour capter l\u2019usage r\u00e9el, pas seulement l\u2019intention.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Extraction_HTML_%E2%86%92_texte\"><\/span>Extract HTML \u2192 text<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Je nettoie sans brutaliser\u2009: je supprime menus, footers, scripts, styles\u2009; je garde h1\u2013h3, paragraphes, listes, attributs <i>alt<\/i>. Les pages multilingues, les encodages capricieux, exigent une normalisation stricte.<\/p>\n<ul>\n<li>\n<p><strong>Champs conseill\u00e9s<\/strong>\u2009: url, titre, texte_principal, sections, meta_description.<\/p>\n<\/li>\n<li>\n<p><strong>R\u00e8gle pratique<\/strong>\u2009: si le texte n\u2019est pas lisible par un humain, il ne le sera pas par l\u2019algo.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Pretraitement_linguistique\"><\/span>Linguistic Preprocessing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Un bon pr\u00e9traitement vaut mieux qu\u2019un mod\u00e8le flamboyant. J\u2019uniformise, je simplifie, puis j\u2019enrichis.<\/p>\n<ul>\n<li>\n<p><strong>Normalisation<\/strong>\u2009: lowercase, gestion des accents, ponctuation, homog\u00e9n\u00e9it\u00e9.<\/p>\n<\/li>\n<li>\n<p><strong>Tokenisation<\/strong>\u2009: mots, n-grammes (2\u20133), fen\u00eatre glissante raisonnable.<\/p>\n<\/li>\n<li>\n<p><strong>Nettoyage<\/strong>\u2009: stopwords, chiffres, longueurs minimales, variantes proches.<\/p>\n<\/li>\n<li>\n<p><strong>Lemmatisation\/Stemmatisation<\/strong>, pour rapprocher les formes, stabiliser les scores.<\/p>\n<\/li>\n<li>\n<p><strong>D\u00e9tection de langue<\/strong>, indispensable sur des sites hybrides, multir\u00e9gions.<\/p>\n<\/li>\n<li>\n<p><strong>POS tagging<\/strong>\u2009: je favorise noms, adjectifs, parfois verbes d\u2019action.<\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p><strong>Param\u00e8tres cl\u00e9s<\/strong>\u2009: stopwords personnalis\u00e9s, longueur min\/max, fen\u00eatre n-grammes.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Methodes_dextraction_de_termes\"><\/span>Term Extraction Methods<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Je choisis l\u2019outil selon le volume, la latence, et l\u2019usage final. Mon avis\u2009: commencez simple, mesurez, puis sophistiquez.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"TF-IDF\"><\/span>TF-IDF<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Id\u00e9al pour prioriser des mots caract\u00e9ristiques d\u2019une page face \u00e0 un corpus. Je calcule un top-K par page, puis je d\u00e9duplique sur le site. Sobre, efficace, transparent.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Frequences_n-grammes\"><\/span>N-gram Frequencies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Parfaits pour capter des expressions naturelles. Je regarde les cooccurrences, j\u2019\u00e9monde les g\u00e9n\u00e9riques, je garde des expressions cl\u00e9s lisibles.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"RAKE\"><\/span>RAKE<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Rapide, sans corpus d\u2019entra\u00eenement\u2009; utile quand je n\u2019ai pas d\u2019historique. La qualit\u00e9 d\u00e9pend du nettoyage\u2009: soignez vos stopwords.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"TextRank\"><\/span>TextRank<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Les graphes de mots donnent souvent des expressions cr\u00e9dibles, surtout avec des poids POS. Un peu plus lent, mais robuste sur des contenus denses.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Embeddings_KeyBERTtransformers\"><\/span>Embeddings (KeyBERT\/Transformers)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Je score la similarit\u00e9 s\u00e9mantique document-terme, j\u2019obtiens des candidats pertinents, m\u00eame sans exact match. Co\u00fbteux, mais pr\u00e9cieux pour couvrir les synonymes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thematisation_LDABERTopic\"><\/span>Thematization (LDA\/BERTopic)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Je regroupe les pages par th\u00e8mes, j\u2019extrais des termes \u00ab centro\u00efdes \u00bb, je croise avec l\u2019intention. Tr\u00e8s utile pour explorer un gros site, calmement.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Priorisation_editoriale\"><\/span>Editorial Prioritization<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p><strong>Intention<\/strong>\u2009: informationnelle, transactionnelle, navigationnelle.<\/p>\n<\/li>\n<li>\n<p><strong>Difficult\u00e9\/comp\u00e9titivit\u00e9<\/strong>\u2009: via un proxy externe, \u00e0 manier avec prudence.<\/p>\n<\/li>\n<li>\n<p><strong>Proximit\u00e9 marque\/produit<\/strong>, pour rester l\u00e9gitime, coh\u00e9rent.<\/p>\n<\/li>\n<li>\n<p><strong>Couverture actuelle<\/strong> vs opportunit\u00e9s, pour investir o\u00f9 cela compte.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Evaluation_metriques\"><\/span>Metrics Assessment<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sans \u00e9valuation, vous pilotez \u00e0 vue. J\u2019installe des v\u00e9rit\u00e9s terrain, je s\u00e9pare entra\u00eenement, validation, test, puis je compare des approches, sereinement.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Verites_terrain\"><\/span>Real-World Insights<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>Listes de mots attendus par page, ou par th\u00e8me, avec annotations humaines.<\/p>\n<\/li>\n<li>\n<p>\u00c9chantillons stratifi\u00e9s par type de page, langue, fra\u00eecheur.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Metriques_de_qualite\"><\/span>Quality Metrics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p><strong>Pr\u00e9cision, Rappel, F1<\/strong> sur top-K termes, lisibles par tous.<\/p>\n<\/li>\n<li>\n<p><strong>NDCG\/MAP<\/strong> pour \u00e9valuer le classement fin, utile quand K est grand.<\/p>\n<\/li>\n<li>\n<p><strong>Coh\u00e9rence th\u00e9matique<\/strong> (UMass\/NPMI) pour topics, pratique en exploration.<\/p>\n<\/li>\n<li>\n<p><strong>Taux de couverture<\/strong> des intentions, pour valider l\u2019utilit\u00e9 m\u00e9tier.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Protocole_devaluation\"><\/span>Evaluation Protocol<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>D\u00e9finir K (ex. top-10 par page), rester constant, \u00e9viter les biais.<\/p>\n<\/li>\n<li>\n<p>Comparer aux termes de r\u00e9f\u00e9rence, analyser les erreurs\u2009: trop g\u00e9n\u00e9riques, hors sujet.<\/p>\n<\/li>\n<li>\n<p>It\u00e9rer sur pr\u00e9traitement, hyperparam\u00e8tres, choix des m\u00e9thodes.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Cadence_et_seuils\"><\/span>Pace and Thresholds<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>\u00c9valuation initiale, puis mensuelle en production.<\/p>\n<\/li>\n<li>\n<p>Seuils d\u2019alerte sur F1 et NDCG, d\u00e9clenchant une investigation.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Mise_en_production_monitoring\"><\/span>Production Monitoring<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Je pr\u00e9f\u00e8re des briques simples, observables. Un orchestrateur pour le crawl, un service d\u2019extraction\/NLP, un stockage propre, une API sobre, un tableau de bord utile.<\/p>\n<ul>\n<li>\n<p><strong>Planificateur de crawl<\/strong>, fen\u00eatres horaires, priorit\u00e9s par sections.<\/p>\n<\/li>\n<li>\n<p><strong>Service d\u2019extraction NLP<\/strong>, stateless, facile \u00e0 scaler.<\/p>\n<\/li>\n<li>\n<p><strong>Stockage<\/strong>\u2009: documents, index de termes, historiques de scores.<\/p>\n<\/li>\n<li>\n<p><strong>API<\/strong> de restitution, filtrage par url, th\u00e8me, date.<\/p>\n<\/li>\n<li>\n<p><strong>Tableau de bord<\/strong> qualit\u00e9, pour suivre d\u2019un coup d\u2019\u0153il.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Indicateurs_a_suivre\"><\/span>Key Metrics to Monitor<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>Fra\u00eecheur du contenu crawl\u00e9, par r\u00e9pertoire, par langue.<\/p>\n<\/li>\n<li>\n<p>F1\/NDCG glissants, sur un panel t\u00e9moin.<\/p>\n<\/li>\n<li>\n<p>Taux d\u2019erreurs d\u2019extraction\u2009: HTML cass\u00e9, 404, encodage.<\/p>\n<\/li>\n<li>\n<p>Co\u00fbt de calcul par page, et temps de bout en bout.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Conformite_et_ethique\"><\/span>Compliance and Ethics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>Respect de robots.txt, charge serveur, politesse r\u00e9seau.<\/p>\n<\/li>\n<li>\n<p>Conformit\u00e9 juridique\u2009: CGU, donn\u00e9es personnelles, contenus sensibles.<\/p>\n<\/li>\n<li>\n<p>Gestion fine des langues, des r\u00e9gions, des doublons quasi identiques.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Exemples_structures\"><\/span>Structured Examples<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Je structure les donn\u00e9es pour qu\u2019elles soient exploitables, v\u00e9rifiables, et faciles \u00e0 auditer.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Fiche_page\"><\/span>Page Details<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>url\u2009: <i>https:\/\/exemple.com\/guide-extraction<\/i><\/p>\n<\/li>\n<li>\n<p>titre\u2009: <i>Guide d\u2019extraction de texte<\/i><\/p>\n<\/li>\n<li>\n<p>texte_principal\u2009: <i>corps nettoy\u00e9, sans menus<\/i><\/p>\n<\/li>\n<li>\n<p>sections\u2009: <i>h1-h3, listes<\/i><\/p>\n<\/li>\n<li>\n<p>meta_description\u2009: <i>r\u00e9sum\u00e9 \u00e9ditorial<\/i><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Page_transactionnelle\"><\/span>Transaction Page<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>url\u2009: <i>https:\/\/exemple.com\/produit-xyz<\/i><\/p>\n<\/li>\n<li>\n<p>sections\u2009: <i>caract\u00e9ristiques, avis, FAQ<\/i><\/p>\n<\/li>\n<li>\n<p>termes extraits\u2009: <i>prix, livraison, garantie, taille<\/i><\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Page_informationnelle\"><\/span>Information Page<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>url\u2009: <i>https:\/\/exemple.com\/tutoriel-rake<\/i><\/p>\n<\/li>\n<li>\n<p>sections\u2009: <i>tutoriel, code, bonnes pratiques<\/i><\/p>\n<\/li>\n<li>\n<p>termes extraits\u2009: <i>RAKE, stopwords, n-grammes, score<\/i><\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Outils_ressources\"><\/span>Tools and Resources<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Je choisis les outils selon votre niveau, votre stack, et vos contraintes de temps.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"NLP\"><\/span>NLP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>spaCy, NLTK, Stanza, pour lemmatisation, POS, d\u00e9tection de langue.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Extraction\"><\/span>Extraction<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>BeautifulSoup, l, Readability, trafilatura, pour convertir HTML \u2192 texte propre.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Crawl\"><\/span>Crawl<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>Scrapy, Playwright pour pages dynamiques, orchestrateurs simples.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Vectorisation_themes\"><\/span>Vectorization of Themes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>KeyBERT, sentence-transformers, BERTopic, LDA, selon budget et volume.<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Evaluation_tableaux_de_bord\"><\/span>Dashboard Evaluation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>Notebooks pour l\u2019exp\u00e9rimentation, un dashboard minimal pour F1, NDCG, fra\u00eecheur.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Comment_extraire_le_texte_propre_dune_page_web%E2%80%89\"><\/span>How do you extract the plain text from a web page?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Je retire le chrome (menus, footers, scripts, styles), je garde titres, paragraphes, listes, attributs <i>alt<\/i>, puis je normalise encodage et espaces. L\u2019objectif\u2009: un texte lisible, stable, tra\u00e7able.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quelles_methodes_pour_detecter_les_mots_importants%E2%80%89\"><\/span>What are some methods for identifying important words?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Je commence par TF-IDF et fr\u00e9quences de n-grammes, je compare \u00e0 RAKE et TextRank, puis je teste une approche embeddings quand les volumes justifient l\u2019effort.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Comment_mesurer_la_qualite_des_mots_extraits%E2%80%89\"><\/span>How can we measure the quality of the extracted words?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Avec des v\u00e9rit\u00e9s terrain et des m\u00e9triques claires\u2009: pr\u00e9cision, rappel, F1 sur top-K, NDCG\/MAP pour l\u2019ordre, coh\u00e9rence th\u00e9matique pour les topics. Je fixe des seuils, j\u2019it\u00e8re.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quels_outils_utiliser_selon_mon_niveau_technique%E2%80%89\"><\/span>What tools should I use based on my technical skill level?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>D\u00e9butant\u2009: trafilatura + TF-IDF. Interm\u00e9diaire\u2009: TextRank + POS. Avanc\u00e9\u2009: embeddings + BERTopic, pipeline orchestr\u00e9, monitoring qualit\u00e9.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Glossaire\"><\/span>Glossary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\n<p><strong>TF-IDF<\/strong>\u2009: score pond\u00e9rant fr\u00e9quence locale et raret\u00e9 globale.<\/p>\n<\/li>\n<li>\n<p><strong>RAKE<\/strong>\u2009: extraction de phrases cl\u00e9s par cooccurrences, sans entra\u00eenement.<\/p>\n<\/li>\n<li>\n<p><strong>TextRank<\/strong>\u2009: graphe de mots, score par \u00ab vote \u00bb des voisins.<\/p>\n<\/li>\n<li>\n<p><strong>Embeddings<\/strong>\u2009: vecteurs s\u00e9mantiques, proximit\u00e9 par similarit\u00e9.<\/p>\n<\/li>\n<li>\n<p><strong>NDCG<\/strong>\u2009: qualit\u00e9 d\u2019un classement, sensible \u00e0 la position.<\/p>\n<\/li>\n<li>\n<p><strong>F1<\/strong>\u2009: moyenne harmonique pr\u00e9cision\/rappel, lisible, compacte.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Checklist_rapide\"><\/span>Quick checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\n<p>D\u00e9finir le p\u00e9rim\u00e8tre d\u2019URLs, propre, prioris\u00e9.<\/p>\n<\/li>\n<li>\n<p>Nettoyer le HTML, garder les sections utiles.<\/p>\n<\/li>\n<li>\n<p>Normaliser, tokeniser, lemmatiser, r\u00e9gler les n-grammes.<\/p>\n<\/li>\n<li>\n<p>Lancer TF-IDF + n-grammes, comparer RAKE, TextRank, embeddings.<\/p>\n<\/li>\n<li>\n<p>\u00c9valuer sur top-K\u2009: pr\u00e9cision, rappel, F1, NDCG, puis it\u00e9rer.<\/p>\n<\/li>\n<li>\n<p>Mettre en production, monitorer fra\u00eecheur, F1\/NDCG, co\u00fbts, erreurs.<\/p>\n<\/li>\n<li>\n<p>Documenter les param\u00e8tres, les jeux d\u2019essai, les d\u00e9cisions.<\/p>\n<\/li>\n<\/ul>\n<p>Mon avis final, franc\u2009: privil\u00e9giez la simplicit\u00e9 qui se mesure, refusez la complexit\u00e9 qui s\u00e9duit, et installez un rituel d\u2019\u00e9valuation, r\u00e9gulier, serein.<\/p>","protected":false},"excerpt":{"rendered":"<p>I\u2019ll show you a simple, modular pipeline for extracting useful words and phrases from web pages. You\u2019ll compare TF-IDF, RAKE, TextRank, and embeddings\u2014without unnecessary jargon\u2014along with my take on each step. You\u2019ll measure quality using precision, recall, F1 score, and NDCG, then iterate calmly and methodically. You\u2019ll deploy a robust, monitored workflow\u2026<\/p>","protected":false},"author":1,"featured_media":693,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","saswp_custom_schema_field":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-691","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"modified_by":null,"_links":{"self":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/posts\/691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/comments?post=691"}],"version-history":[{"count":0,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/posts\/691\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/media\/693"}],"wp:attachment":[{"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/media?parent=691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/categories?post=691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linkauthority.eu\/en\/wp-json\/wp\/v2\/tags?post=691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}