Size (S). Number of pages recovered from four engines: Google, Yahoo, Live Search and Exalead. Visibility (V). The total number of unique external links received (inlinks) by a site can be only confidently obtained from Yahoo Search, Live Search and Exalead. Rich Files (R). After evaluation of their relevance to academic and publication activities and considering the volume of the different file formats, the following were selected: Adobe Acrobat (.pdf), Adobe PostScript (.ps), Microsoft Word (.doc) and Microsoft Powerpoint (.ppt). These data were extracted using Google, Yahoo Search, Live Search and Exalead. Scholar (Sc). Google Scholar provides the number of papers and citations for each academic domain. These results from the Scholar database represent papers, reports and other academic items. 各比例 Visibility 50% Size 20% Rich Files 15% Scholar 15% 如果看得懂的大概就晓得这排行 根本就是跟网路使用度相关 跟学术有关的大概就只有Scholar这项 比例又压这麽低 这样的排名真的没啥太大意义 --

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