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 video rather than just text to 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.
4.The researchers designed and tested a machine vision system a type ofartificial intelligence that allows computers to learn without being explicitlyprogrammed that extracts semantic (语义的) information from thepixels of photos in Web pages. This information is used to enrich thedescription of the HTML page used by search engines for document retrieval. Theresearchers tested their approach using more than 600 search queries (查询)on a database of 50 million Web pages. They selected the text-retheval searchengine with the best performance and modified it to make use of the additionalsemantic information extracted by their method from the pictures of the Webpages. They found that this produced a 30 percent improvement in precision overthe original search engine purely based on text.
23. Paragraph 1 __B__
24. Paragraph 2 __C__
25. Paragraph 3 __E__
26. Paragraph 4 __D__
A.Popularity of the new system
B.Publication of the new discovery
C.Function of the new system
D.Artificial intelligence software created
E.Problems of the existing search engines
F.Improvement in document retrieval
27. The new system does documentretrieval by __C__.
28. The new system is expected toimprove precision in __B__.
29. When performing documentretrieval the existing search engines ignore __A__
30. The new system was found moreeffective in document search than the __E__
A.information in images
B.current popular search engines
C.using photos
D.machine vision systems
E.document search
F.description of the HTML page
口语情景对话:走遍美国精选 二度蜜月ACT 3 - 2
实用口语:Bob Brings Cookies to the market
实用口语情景轻松学:飞机事故真是太惨了
实用口语情景轻松学:求职面试
2011年实用口语练习:In the library 在图书馆
英语口语主题:交际英语热门话题47个(21--生日派对)
英语口语主题:交际英语热门话题47个(14--同事之间)
口语情景对话:走遍美国精选 当仁不让 ACT 3 - 1
实用口语情景轻松学:我想买个数码摄像机
疯狂口语要素精选 17
2011年实用口语练习:歉意怎么说出口(2)
口语情景对话:走遍美国精选 二度蜜月ACT 3 - 3
英语口语主题:交际英语热门话题47个(11--表达歉意)
英文情景对话:我想吃真正的中国菜
20条地道实用英语句型(2)
2011年实用口语练习:Arrival 入学报到啦
口语情景对话:走遍美国精选 偷得浮生半日闲ACT 3 - 1
实用口语:Nicole's day at school
2011年实用口语练习:背后捅刀
职场英语情景会话:Farewell before Christmas 圣诞前的道别
实用口语:浪漫 Romance
2岁的萝莉口译员Lucy Wang
2011年实用口语练习:一起来找“茶”
节日英语口语:十一句话搞定圣诞礼物
实用口语情景轻松学:你知道怎么申请赴美签证吗?
日常口语精华集1
口语情景对话:走遍美国精选 感恩节ACT 1 - 1
那些美剧告诉你的事儿
最常用的26句生活用语
实用口语情景轻松学:我没在海里游过泳
| 不限 | 
| 英语教案 | 
| 英语课件 | 
| 英语试题 | 
| 不限 | 
| 不限 | 
| 上册 | 
| 下册 | 
| 不限 |