\u30ea\u30f3\u30af \u30d7\u30ed\u30b0\u30e9\u30e0<\/a><\/span><\/p>\n \u30fb\u30fb\u30fb\u76f8\u4e92\u30ea\u30f3\u30af\u306b\u53c2\u52a0\u3057\u3066\u3044\u308b\u4e00\u90e8\u306e\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u306f\u3001\u30ea\u30f3\u30af\u306e\u54c1\u8cea\u3001\u30bd\u30fc\u30b9\u3001\u4ed6\u306e\u30b5\u30a4\u30c8\u306b\u4e0e\u3048\u308b\u9577\u671f\u7684\u306a\u5f71\u97ff\u3092\u7121\u8996\u3057\u3066\u3001\u76f8\u4e92\u30ea\u30f3\u30af\u3060\u3051\u3092\u76ee\u7684\u3068\u3057\u305f\u30d1\u30fc\u30c8\u30ca\u30fc \u30da\u30fc\u30b8\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f Google \u306e\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u5411\u3051\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u3059\u308b\u9055\u53cd\u3068\u306a\u308a\u3001\u691c\u7d22\u7d50\u679c\u306b\u304a\u3051\u308b\u30b5\u30a4\u30c8\u306e\u30e9\u30f3\u30ad\u30f3\u30b0\u306b\u60aa\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30ea\u30f3\u30af \u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n Yahoo!\u3082\u3001\u672c\u8cea\u7684\u306bGoogle\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n Yahoo! Search Content Quality Guidelines\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n What Yahoo! Considers Unwanted:<\/span> …<\/p><\/blockquote>\n \u5bfe\u5fdc\u3059\u308b\u65e5Yahoo!\u306e\u30a4\u30f3\u30d5\u30a9\u30bb\u30f3\u30bf\u30fc<\/a>\u3067\u306e\u8aac\u660e\u3067\u3059\u3002<\/p>\n \u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u30b9\u30d1\u30e0\u3068\u306f<\/span> \u30fb\u30fb\u30fb\n<\/p><\/blockquote>\n \u3053\u3093\u306a\u4e2d\u3001Yahoo!\u304c\u3001”Identifying excessively reciprocal links among web entities<\/a>“\u3068\u3044\u3046\u76f8\u4e92\u30ea\u30f3\u30af\u306b\u95a2\u3059\u308b\u65b0\u3057\u3044Patent\uff08\u30d1\u30c6\u30f3\u30c8\uff1a\u7279\u8a31\uff09\u3092\u53d6\u5f97\u3057\u307e\u3057\u305f\u3002<\/p>\n \u65e5\u672c\u8a9e\u306b\u76f4\u3059\u3068\u3001\u300c\u30a6\u30a7\u30d6\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u304a\u3051\u308b\u884c\u304d\u904e\u304e\u305f\u76f8\u4e92\u30ea\u30f3\u30af\u306e\u8b58\u5225\u300d\u306b\u306a\u308a\u307e\u3059\u3002 \u30dd\u30a4\u30f3\u30c8\u3068\u306a\u308b\u90e8\u5206\u3092\u5f15\u7528\u3057\u307e\u3059\u3002<\/p>\n Abstract <\/span> [0005]For example, if a search engine ranks a web page based on the value of some attribute of the web page, then the web page’s author may seek to alter the value of that attribute of the web page manually so that the value becomes unnaturally inflated. For example, a web page author might fill his web page with hidden metadata that contains words that are often searched for, but which have little or nothing to do with the actual visual content of the web page. In another example, a web page author adds to a web page many incoming hyperlinks, also called inlinks, based on the observation that web pages more frequently referenced by other web pages are generally considered by search engines as being of higher relevance. One method used by web page authors to increase the number of inlinks in web pages is to create web pages with “reciprocal links,” where two web pages both link to each other, resulting in an increased number of inlinks for each reciprocally linked web page.<\/p>\n [0006]When web page authors engage in these tactics, the perceived effectiveness of the search engine is reduced. Spurious references to web pages which are not useful for users and are meant to boost search rankings sometimes push poorer results above web pages that users have previously found interesting or valuable for legitimate reasons. Thus, it is in the interests of those who maintain the search engine to “weed out,” from search results, references to web pages that are known to have been artificially manipulated in the manner discussed above.<\/p>\n [0007]Therefore, there is a need for an automated way of identifying web pages that are likely to have been manipulated in a manner that artificially inflates the rankings of those web pages within lists of search results. Specifically, there is a need for an automated way of identifying web pages whose numbers of inlinks have been artificially boosted by reciprocal links in an effort to achieve higher rankings for those web pages.<\/p><\/blockquote>\n \u82f1\u8a9e\u5acc\u3044\u306a\u8aad\u8005\u3055\u3093\u306f\u3001\u3053\u3053\u3067\u96e2\u8131\u3057\u305d\u3046\u3067\u3059\u306d\u3002\uff08\u7b11\uff09<\/p>\n \u9577\u3044\u3057\u3001\u96e3\u3057\u3081\u306e\u8868\u73fe\u3082\u3042\u308b\u306e\u3067\u5168\u8a33\u306f\u9060\u616e\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n \u8981\u70b9\u3092\u307e\u3068\u3081\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n \u76f8\u4e92\u30ea\u30f3\u30af\u306e\u5272\u5408\u304c\u904e\u5bc6\u306b\u306a\u308b\u3068\u3001\u691c\u7d22\u7d50\u679c\u306b\u5909\u66f4\u3092\u4e0e\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n \u96a0\u3057\u30c6\u30ad\u30b9\u30c8\u306e\u3088\u3046\u306b\u4eba\u70ba\u7684\u306b\u30e9\u30f3\u30ad\u30f3\u30b0\u3092\u4e0a\u3052\u308b\u624b\u6bb5\u3068\u3057\u3066\u3001\u30ea\u30f3\u30af\u7372\u5f97\u306e\u305f\u3081\u306e\u76f8\u4e92\u30ea\u30f3\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n \u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u6709\u76ca\u306a\u7d50\u679c\u3092\u9069\u5207\u306b\u8fd4\u3059\u305f\u3081\u306b\u3001\u9806\u4f4d\u4e0a\u6607\u3092\u72d9\u3063\u305f\u76f8\u4e92\u30ea\u30f3\u30af\u3092\u81ea\u52d5\u7684\u306b\u691c\u77e5\u3059\u308b\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p><\/div>\n \n\u50d5\u306f\u76f8\u4e92\u30ea\u30f3\u30af\u81ea\u4f53\u304c\u5acc\u3044\u3067\u3059\u304c\u3001Yahoo!\u304c\u3059\u3079\u3066\u306e\u76f8\u4e92\u30ea\u30f3\u30af\u3092\u5426\u5b9a\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n \u6b63\u5f53\u306a\u7406\u7531\u304c\u3042\u308c\u3070\u3001\u76f8\u4e92\u30ea\u30f3\u30af\u306e\u5272\u5408\u304c\u9ad8\u304f\u3066\u3082\u5bb9\u8a8d\u3055\u308c\u307e\u3059\u3002 For example, a particular web page may have many reciprocal links with a group of web pages because these web pages discuss the same subject matter in a complementary fashion and the web page authors have found it expedient for those web pages to refer to each other.<\/p>\n In another example, two groups of web pages refer to each other reciprocally because those groups belong to two company web sites where the companies are part of the same conglomerate.<\/p><\/blockquote>\n \u305f\u3068\u3048\u3070\u3001\u540c\u3058\u30c6\u30fc\u30de\u3092\u53d6\u308a\u6271\u3063\u3066\u3044\u3066\u3001\u88dc\u5b8c\u3057\u5408\u3046\u3068\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u5f97\u7b56\u306a\u5834\u5408\u306e\u76f8\u4e92\u30ea\u30f3\u30af\u3084\u3001\u30b0\u30eb\u30fc\u30d7\u4f01\u696d\u3068\u3057\u3066\u4f1a\u793e\u540c\u58eb\u304c\u30ea\u30f3\u30af\u3057\u3042\u3046\u5834\u5408\u3067\u3059\u3002<\/p>\n \u307e\u305f\u3001Yahoo!\u306e\u3088\u3046\u306b\u8a8d\u77e5\u5ea6\u304c\u3042\u3063\u3066\u6b63\u5f53\u306a\u30b5\u30a4\u30c8\u3067\u3042\u308c\u3070\u3001”White List\uff08\u30db\u30ef\u30a4\u30c8\u30fb\u30ea\u30b9\u30c8\uff09”\u3068\u3057\u3066\u5bfe\u8c61\u304b\u3089\u5916\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n \u30dd\u30a4\u30f3\u30c8\u3068\u306a\u308b\u306e\u306f\u3001\u30d1\u30c6\u30f3\u30c8\u306e\u30bf\u30a4\u30c8\u30eb\u306b\u3042\u308b“excessively\u201d<\/span>\u3067\u3059\u3002 \u5168\u4f53\u306e\u30ea\u30f3\u30af\u306b\u5360\u3081\u308b\u5272\u5408\u304c\u3001\u57fa\u6e96\u5024\u306b\u5bfe\u3057\u3066\u9ad8\u3044\u3068\u30e9\u30f3\u30ad\u30f3\u30b0\u306e\u4f4e\u4e0b\u3001\u3042\u308b\u3044\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u524a\u9664\u3068\u3044\u3046\u51e6\u7f6e\u304c\u3068\u3089\u308c\u307e\u3059\u3002<\/p>\n \u6c17\u306b\u306a\u308b\u306e\u306f\u305d\u306e\u300c\u57fa\u6e96\u5024\u300d\u3067\u3059\u304c\u3001\u305d\u308c\u306f\u30d1\u30c6\u30f3\u30c8\u3067\u306f\u89e6\u308c\u3089\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n \u3067\u3082\u300120\u500b\u306e\u30ea\u30f3\u30af\u304c\u3042\u3063\u3066\u3001\u305d\u306e20\u500b\u304c\u3059\u3079\u3066\u76f8\u4e92\u30ea\u30f3\u30af\u3060\u3068\u3057\u305f\u3089\u554f\u984c\u304c\u3042\u308b\u3067\u3057\u3087\u3046\u306d\u3002<\/p>\n \u8d85\u904e\u76f8\u4e92\u30ea\u30f3\u30af\u3092\u691c\u77e5\u3059\u308b\u306e\u306f\u3001\u81ea\u52d5\u5316\u3055\u308c\u305f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u3063\u3066\u3067\u3059\u304c\u3001\u8aa4\u691c\u77e5\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u306e\u3067\u3001\u5373\u523b\u5bfe\u5fdc\u304c\u3068\u3089\u308c\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n \u602a\u3057\u3044\u3068\u5224\u65ad\u3055\u308c\u305f\u30b5\u30a4\u30c8\u306b\u306f\u3001\u8981\u6ce8\u610f\u3068\u3057\u3066\u300c\u30d5\u30e9\u30b0\u300d\u304c\u7acb\u3066\u3089\u308c\u3001\u4eba\u9593\u306e\u76ee\u306b\u3088\u308b\u30de\u30cb\u30e5\u30a2\u30eb\u30ec\u30d3\u30e5\u30fc\u304c\u884c\u308f\u308c\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n \u76f8\u4e92\u30ea\u30f3\u30af\u3068\u3044\u3046\u3068\u3001\uff12\u3064\u306e\u30b5\u30a4\u30c8\u9593\u3067\u306e\u30ea\u30f3\u30af\u3092\u60f3\u50cf\u3057\u307e\u3059\u304c\u3001\u300c\uff13\u65b9\u5411\u30ea\u30f3\u30af<\/a>\u300d\u3067\u8aac\u660e\u3057\u305f\u3088\u3046\u306b\u3001\u300c\u30b5\u30a4\u30c8A \u21d2 \u30b5\u30a4\u30c8B \u21d2 \u30b5\u30a4\u30c8C \u21d2 \u30b5\u30a4\u30c8A\u300d\u306e\u3088\u3046\u306b\u3001\u3050\u308b\u3050\u308b\u5faa\u74b0\u3057\u3066\u76f4\u63a5\u3067\u306a\u3044\u9593\u63a5\u7684\u306a\u30ea\u30f3\u30af\u3067\u3042\u3063\u3066\u3082\u3001\u76f8\u4e92\u30ea\u30f3\u30af\u3068\u3057\u3066\u307f\u306a\u3055\u308c\u307e\u3059\u3002<\/p>\n \u56f3\u306f\uff13\u3064\u3067\u3059\u304c\u3001\uff14\u3064\u3067\u3082\uff15\u3064\u3067\u3082\u3001\u305d\u308c\u4ee5\u4e0a\u3067\u3082\u76f8\u4e92\u30ea\u30f3\u30af\u3068\u3057\u3066\u307f\u306a\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3002<\/p>\n\n
\n…<\/p>\n\n
\n\u30fb\u30fb\u30fb<\/p>\n\n
\n\u203b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff08entity\uff09\u306f\u5b58\u5728\u3084\u5b9f\u4f53\u306e\u610f\u3001reciprocal link\u306f\u76f8\u4e92\u30ea\u30f3\u30af<\/p>\n
\nA method for identifying reciprocal links is provided. At a particular host, the set of hosts which link to the particular host and the set of hosts to which the particular host links are determined. The intersection and union of the two sets of hosts are also determined, and the sizes of the intersection and union are calculated. The concentration of reciprocal links at the particular host is calculated based on the sizes of the intersection and union. A ratio of the intersection size to the union size is used to determine the concentration of reciprocal links. The particular host’s rank in a list of ranked search results may be changed as a result of identification of a high concentration of reciprocal links.<\/p><\/blockquote>\n
\n\uff08\u8a18\u4e8b\u30bf\u30a4\u30c8\u30eb\u306e\u300c\u76f8\u4e92\u30ea\u30f3\u30afSEO\u306e\u6642\u4ee3\u306f\u7d42\u308f\u3063\u305f\u300d\u3068\u3044\u3046\u306e\u306f\u3001\u5f15\u304d\u4ed8\u3051\u306e\u305f\u3081\u3067\u3059\uff08\u7b11\uff09\uff09<\/p>\n
\n\u300c\u904e\u5ea6\u306b\u3001\u884c\u304d\u904e\u304e\u3066\u300d<\/span>\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002<\/p>\n![\"\u30b9\u30ea\u30fc\u30a6\u30a7\u30a4\u30fb\u30ea\u30f3\u30af\u4ea4\u63db\"](\"\/\/www.suzukikenichi.com\/images\/3-way-link-exchange.jpg\")
<\/p>\n