{"id":8717,"date":"2025-11-08T09:56:09","date_gmt":"2025-11-08T08:56:09","guid":{"rendered":"https:\/\/mobilchips.com\/recuperez-vous-les-appareils-directement-a-domicile\/"},"modified":"2025-11-08T09:56:09","modified_gmt":"2025-11-08T08:56:09","slug":"recuperez-vous-les-appareils-directement-a-domicile","status":"publish","type":"post","link":"https:\/\/mobilchips.com\/fr_be\/recuperez-vous-les-appareils-directement-a-domicile\/","title":{"rendered":"* R\u00e9cup\u00e9rez-vous les appareils directement \u00e0 domicile ?"},"content":{"rendered":"

J’ai un ensemble de donn\u00e9es textuelles que j’ai pr\u00e9trait\u00e9 : j’ai supprim\u00e9 la ponctuation, mis tout en minuscules et tokenis\u00e9 chaque texte. Maintenant, je veux calculer la similarit\u00e9 cosinus entre ces documents pour identifier ceux qui se ressemblent le plus s\u00e9mantiquement. Plus pr\u00e9cis\u00e9ment, j’aimerais utiliser la repr\u00e9sentation TF-IDF (Term Frequency-Inverse Document Frequency) pour vectoriser mes documents. <\/p>\n

<\/p>\n

Je me demande comment impl\u00e9menter cela efficacement en Python. Est-ce que vous pourriez me fournir un code exemple utilisant une biblioth\u00e8que comme scikit-learn<\/code> pour :<\/p>\n

<\/p>\n

    <\/p>\n
  1. Calculer la matrice TF-IDF \u00e0 partir de mes documents tokenis\u00e9s ?<\/li>\n

    <\/p>\n

  2. Calculer la similarit\u00e9 cosinus entre les vecteurs TF-IDF r\u00e9sultants ?<\/li>\n

    <\/p>\n

  3. Identifier les paires de documents les plus similaires, id\u00e9alement avec un seuil de similarit\u00e9 que je pourrais ajuster ?<\/li>\n

    \n<\/ol>\n

    <\/p>\n

    En plus, est-ce qu’il y a des optimisations possibles si mon ensemble de donn\u00e9es est tr\u00e8s volumineux (par exemple, des centaines de milliers de documents) pour rendre le calcul de la similarit\u00e9 cosinus plus rapide et moins gourmand en m\u00e9moire ? Est-ce qu’il serait judicieux d’utiliser des techniques comme la LSA (Latent Semantic Analysis) ou le Hashing sensible \u00e0 la localit\u00e9 (LSH) dans ce cas, et si oui, comment les int\u00e9grer dans le code?<\/p>\n

    <\/p>\n

    J’appr\u00e9cierais grandement un exemple de code clair et comment\u00e9 qui illustre l’ensemble de ces \u00e9tapes. Merci!<\/p>\n

    Answer<\/h2>\n

    Answer this question and add details as further as you can and do not add any comments from your side, just return the answer, all written in French language: * R\u00e9cup\u00e9rez-vous les appareils directement \u00e0 domicile ?<\/p>","protected":false},"excerpt":{"rendered":"

    J’ai un ensemble de donn\u00e9es textuelles que j’ai pr\u00e9trait\u00e9 : […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":0,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[788],"tags":[],"class_list":["post-8717","post","type-post","status-publish","format-standard","hentry","category-reparation-mobiles-samsung"],"yoast_head":"\n* R\u00e9cup\u00e9rez-vous les appareils directement \u00e0 domicile ? - R\u00e9parateur Paris<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mobilchips.com\/fr_be\/recuperez-vous-les-appareils-directement-a-domicile\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"* R\u00e9cup\u00e9rez-vous les appareils directement \u00e0 domicile ? 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