评论

  • 这计算有理有据,却看得我头晕,总觉得哪里有点不对。<br>主要是这65%不知是以套为单位还是以张为单位,因为现有记录中两者都有。如果以套为单位,那图片总数就不可知了。<br>无论如何,我们总可以期待第200万幅了。<br>
  • 引一段PPOC网站的东西:<br>The Prints and Photographs Online Catalog (PPOC) contains catalog records and digital images representing a rich cross-section of still pictures held by the Prints & Photographs Division and other units of the Library. The Library of Congress offers broad public access to these materials as a contribution to education and scholarship<br># The catalog provides access through group or item records to about 65% of the Division&aposs holdings.<br># About 90% of the records are accompanied by one or more digital images. In some collections, only thumbnail images display to those searching outside the Library of Congress because of potential rights considerations.<br>也就是说90%的纪录都至少有一幅数字图像,总共有100万幅,而这100万幅照片所指向的纪录涵盖了PPD65%的馆藏,所以PPOC保存照片的照片应不会超过200万幅。<br>

发表评论

您将收到博主的回复邮件
记住我