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2015年全国职称英语考试于3月28日(9：00-11：00)举行。针对考后考生最关注的2015职称英语考试真题及答案解析问题，英语网在考后第一时间为您整理发布2015职称英语考试真题及答案解析：理工类。预祝各位考生顺利通过2015职称英语考试! FirstImage-recognition Software 1.Dartmouth researchers and their colleagues have created an artificial 1,software that uses photos to locate documents on the Internet with far gre jthan ever before. 2.The new system,which was tested on photos and is now being applied to,Ishows for the first time that a machine learning algorithm (运算法则)or,ma9e I recognition and retrieval is accurate and efficient enough toimprove large seaie,document searches online. The system uses pixel (像素)data in images and potentia y videorather than just textto locatedocuments. It learns to recognize the pixels associated with a search phrase bystudying the results from text-based image search engines. The knowledgegleaned (收集) from those results can then beapplied to other photos without tags or captions making for more accuratedocument search results. 3.Over the last 30 years,says Associate Professor Lorenzo Torresani,a co-author of the study,the Web has evolved from a small collection ofmostly text documents to a modern,massive,fast-growing multimedia dataset,where nearly every page includes multiple pictures or videos. When a personlooks at a Web page,he immediately gets the gist (主旨)of it by looking at the pictures in it. Yet,surprisingly,all existing popularsearch engines,such as Google or Bing,strip away the information contained inthe photos and use exclusively the text of Web pages to perform the documentretrieval. Our study is the first to show that modern machine vision systemsare accurate and efficient enough to make effective use of the informationcontained in image pixels to improve document search. | 
