{"id":202028,"date":"2025-05-10T11:53:30","date_gmt":"2025-05-10T03:53:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202028\/"},"modified":"2025-05-10T11:53:30","modified_gmt":"2025-05-10T03:53:30","slug":"%e4%bd%bf%e7%94%a8redis%e5%92%8cpython%e6%9e%84%e5%bb%ba%e6%8e%a8%e8%8d%90%e7%b3%bb%e7%bb%9f%ef%bc%9a%e5%a6%82%e4%bd%95%e6%8f%90%e4%be%9b%e4%b8%aa%e6%80%a7%e5%8c%96%e6%8e%a8%e8%8d%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202028\/","title":{"rendered":"\u4f7f\u7528Redis\u548cPython\u6784\u5efa\u63a8\u8350\u7cfb\u7edf\uff1a\u5982\u4f55\u63d0\u4f9b\u4e2a\u6027\u5316\u63a8\u8350"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f7f\u7528Redis\u548cPython\u6784\u5efa\u63a8\u8350\u7cfb\u7edf\uff1a\u5982\u4f55\u63d0\u4f9b\u4e2a\u6027\u5316\u63a8\u8350<\/h1>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300a\u4f7f\u7528Redis\u548cPython\u6784\u5efa\u63a8\u8350\u7cfb\u7edf\uff1a\u5982\u4f55\u63d0\u4f9b\u4e2a\u6027\u5316\u63a8\u8350\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

\u4f7f\u7528Redis\u548cPython\u6784\u5efa\u63a8\u8350\u7cfb\u7edf\uff1a\u5982\u4f55\u63d0\u4f9b\u4e2a\u6027\u5316\u63a8\u8350<\/p>\n

\u5728\u4e92\u8054\u7f51\u65f6\u4ee3\uff0c\u63a8\u8350\u7cfb\u7edf\u5df2\u6210\u4e3a\u5404\u5927\u5e73\u53f0\u7684\u6838\u5fc3\u529f\u80fd\u4e4b\u4e00\u3002\u901a\u8fc7\u5206\u6790\u7528\u6237\u884c\u4e3a\u548c\u4e2a\u4eba\u504f\u597d\uff0c\u63a8\u8350\u7cfb\u7edf\u80fd\u591f\u7ed9\u7528\u6237\u63d0\u4f9b\u4e2a\u6027\u5316\u7684\u5185\u5bb9\u63a8\u8350\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Redis\u548cPython\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u63a8\u8350\u7cfb\u7edf\uff0c\u5e76\u63d0\u4f9b\u76f8\u5173\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. Redis\u7b80\u4ecb<\/li>\n<\/ol>\n

    Redis\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u9ad8\u6027\u80fd\u952e\u503c\u5b58\u50a8\u7cfb\u7edf\u3002\u5b83\u652f\u6301\u591a\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u96c6\u5408\u3001\u6709\u5e8f\u96c6\u5408\u7b49\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u547d\u4ee4\u548c\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u5404\u7c7b\u573a\u666f\u3002\u5728\u63a8\u8350\u7cfb\u7edf\u4e2d\uff0cRedis\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u7528\u6237\u884c\u4e3a\u6570\u636e\u548c\u63a8\u8350\u7ed3\u679c\uff0c\u5feb\u901f\u5730\u8fdb\u884c\u6570\u636e\u67e5\u8be2\u548c\u8ba1\u7b97\u3002<\/p>\n

      \n
    1. \u6784\u5efa\u7528\u6237\u884c\u4e3a\u8bb0\u5f55\u6a21\u5757<\/li>\n<\/ol>\n

      \u63a8\u8350\u7cfb\u7edf\u7684\u7b2c\u4e00\u6b65\u662f\u6536\u96c6\u548c\u8bb0\u5f55\u7528\u6237\u7684\u884c\u4e3a\u6570\u636e\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u6709\u5e8f\u96c6\u5408\u6570\u636e\u7ed3\u6784\u6765\u5b9e\u73b0\u4e00\u4e2a\u7528\u6237\u884c\u4e3a\u8bb0\u5f55\u6a21\u5757\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n

      import redis\n\n# \u8fde\u63a5Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u8bb0\u5f55\u7528\u6237\u884c\u4e3a\ndef record_user_behavior(user_id, item_id):\n    r.zincrby('user_behavior', 1, f'{user_id}:{item_id}')\n\n# \u83b7\u53d6\u7528\u6237\u884c\u4e3a\u6392\u884c\u699c\ndef get_user_behavior_ranking():\n    return r.zrevrange('user_behavior', 0, -1, withscores=True)<\/pre>\n
      \u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7zincrby<\/code>\u547d\u4ee4\u5c06\u7528\u6237\u7684\u884c\u4e3a\u8bb0\u5f55\u5728user_behavior<\/code>\u6709\u5e8f\u96c6\u5408\u4e2d\uff0c\u5e76\u4f7f\u7528\u7528\u6237ID\u548c\u7269\u54c1ID\u4f5c\u4e3a\u6709\u5e8f\u96c6\u5408\u7684\u6210\u5458\u8fdb\u884c\u6807\u8bc6\u3002zincrby<\/code>\u547d\u4ee4\u53ef\u4ee5\u5bf9\u6709\u5e8f\u96c6\u5408\u7684\u6307\u5b9a\u6210\u5458\u8fdb\u884c\u81ea\u589e\u64cd\u4f5c\uff0c\u65b9\u4fbf\u6211\u4eec\u7edf\u8ba1\u7528\u6237\u5728\u4e0d\u540c\u7269\u54c1\u4e0a\u7684\u884c\u4e3a\u6b21\u6570\u3002<\/p>\n
        \n
      1. \u6784\u5efa\u63a8\u8350\u6a21\u578b\u5e76\u8ba1\u7b97\u63a8\u8350\u7ed3\u679c<\/li>\n<\/ol>\n
        \u63a8\u8350\u7cfb\u7edf\u7684\u6838\u5fc3\u662f\u63a8\u8350\u6a21\u578b\u548c\u63a8\u8350\u7b97\u6cd5\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u534f\u540c\u8fc7\u6ee4\u7b97\u6cd5\u6765\u5b9e\u73b0\u4e00\u4e2a\u57fa\u4e8e\u7528\u6237\u7684\u63a8\u8350\u7cfb\u7edf\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n
        # \u6784\u5efa\u534f\u540c\u8fc7\u6ee4\u63a8\u8350\u6a21\u578b\ndef build_collaborative_filtering_model():\n    # \u83b7\u53d6\u7528\u6237\u884c\u4e3a\u6570\u636e\n    behavior_data = get_user_behavior_ranking()\n    \n    # \u6784\u5efa\u7528\u6237\u76f8\u4f3c\u5ea6\u77e9\u9635\n    similarity_matrix = {}\n    for i in range(len(behavior_data)):\n        user1, behavior1 = behavior_data[i]\n        user1 = user1.split(':')[0]\n        for j in range(i+1, len(behavior_data)):\n            user2, behavior2 = behavior_data[j]\n            user2 = user2.split(':')[0]\n            \n            # \u8ba1\u7b97\u7528\u6237\u76f8\u4f3c\u5ea6\uff08\u8fd9\u91cc\u7b80\u5316\u4e3a\u7528\u6237\u884c\u4e3a\u6b21\u6570\u7684\u6bd4\u8f83\uff09\n            similarity = abs(int(behavior1) - int(behavior2))\n            \n            # \u66f4\u65b0\u7528\u6237\u76f8\u4f3c\u5ea6\u77e9\u9635\n            if user1 not in similarity_matrix:\n                similarity_matrix[user1] = {}\n            similarity_matrix[user1][user2] = similarity\n            \n            if user2 not in similarity_matrix:\n                similarity_matrix[user2] = {}\n            similarity_matrix[user2][user1] = similarity\n    \n    return similarity_matrix\n\n# \u6839\u636e\u7528\u6237\u884c\u4e3a\u548c\u76f8\u4f3c\u5ea6\u77e9\u9635\u8fdb\u884c\u63a8\u8350\ndef recommend_items(user_id, similarity_matrix):\n    user_similarities = similarity_matrix[user_id]\n    items = {}\n    \n    for user, similarity in user_similarities.items():\n        for item in r.zscan_iter(f'user_behavior', match=f'{user}:*'):\n            item_id = item.decode().split(':')[1]\n            items[item_id] = items.get(item_id, 0) + similarity\n            \n    sorted_items = sorted(items.items(), key=lambda x: x[1], reverse=True)\n    return [item[0] for item in sorted_items[:5]]<\/pre>\n
        \u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7build_collaborative_filtering_model<\/code>\u51fd\u6570\u6784\u5efa\u534f\u540c\u8fc7\u6ee4\u63a8\u8350\u6a21\u578b\uff0c\u8ba1\u7b97\u7528\u6237\u95f4\u7684\u76f8\u4f3c\u5ea6\uff0c\u5e76\u4f7f\u7528recommend_items<\/code>\u51fd\u6570\u6839\u636e\u76f8\u4f3c\u5ea6\u77e9\u9635\u8fdb\u884c\u63a8\u8350\u3002\u8fd9\u91cc\u7b80\u5316\u4e86\u76f8\u4f3c\u5ea6\u7684\u8ba1\u7b97\u548c\u63a8\u8350\u7ed3\u679c\u7684\u83b7\u53d6\uff0c\u5b9e\u9645\u9879\u76ee\u4e2d\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u4f18\u5316\u548c\u6539\u8fdb\u3002<\/p>\n
          \n
        1. \u8c03\u7528\u793a\u4f8b<\/li>\n<\/ol>\n
          # \u8bb0\u5f55\u7528\u6237\u884c\u4e3a\nrecord_user_behavior(1, 'item1')\nrecord_user_behavior(1, 'item2')\nrecord_user_behavior(2, 'item2')\nrecord_user_behavior(2, 'item3')\n\n# \u6784\u5efa\u63a8\u8350\u6a21\u578b\nsimilarity_matrix = build_collaborative_filtering_model()\n\n# \u83b7\u53d6\u63a8\u8350\u7ed3\u679c\nrecommendations = recommend_items(1, similarity_matrix)\nprint(recommendations)<\/pre>\n
          \u5728\u8c03\u7528\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u8bb0\u5f55\u4e86\u4e24\u4e2a\u7528\u6237\u7684\u884c\u4e3a\uff0c\u7136\u540e\u6784\u5efa\u4e86\u63a8\u8350\u6a21\u578b\u5e76\u83b7\u53d6\u4e86\u7528\u62371\u7684\u63a8\u8350\u7ed3\u679c\u3002\u8f93\u51fa\u5c06\u8fd4\u56de\u7528\u62371\u53ef\u80fd\u611f\u5174\u8da3\u7684\u7269\u54c1\u5217\u8868\u3002<\/p>\n
          \u901a\u8fc7Redis\u548cPython\u7684\u7ed3\u5408\uff0c\u6211\u4eec\u53ef\u4ee5\u5feb\u901f\u5efa\u7acb\u4e00\u4e2a\u7b80\u5355\u7684\u4e2a\u6027\u5316\u63a8\u8350\u7cfb\u7edf\u3002\u5f53\u7136\uff0c\u5b9e\u9645\u7684\u63a8\u8350\u7cfb\u7edf\u6d89\u53ca\u5230\u66f4\u590d\u6742\u7684\u7b97\u6cd5\u548c\u6a21\u578b\uff0c\u672c\u6587\u4ec5\u4ec5\u63d0\u4f9b\u4e86\u4e00\u4e2a\u57fa\u7840\u7684\u6846\u67b6\u548c\u793a\u4f8b\u4f9b\u53c2\u8003\u3002\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u6539\u8fdb\u548c\u6269\u5c55\u3002<\/p>\n
          \n
          \n <\/dt>\n
          \n   \u5982\u4f55\u4f7f\u7528MySQL\u5728Haskell\u4e2d\u5b9e\u73b0\u6570\u636e\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u529f\u80fd\n <\/dd>\n<\/dl>\n
          \n
          \n <\/dt>\n
          \n   \u5982\u4f55\u4f7f\u7528Redis\u548cC#\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u529f\u80fd\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          \u4f7f\u7528Redis\u548cPython\u6784\u5efa...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-202028","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202028"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202028\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202028"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}