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第3部分：概況大意與完成句子
First Image-recognitions software
1) Dartmouth researchers and their colleagues have created an artificial intelligence software that uses photos to locate documents on the Internet with far greater accuracy than ever before.
2)The new system, which was tested on photos and is now being applied to videos, shows for the first time that a machine learning algorithm(運(yùn)算法則)for image recognition and retrieval is accurate and efficient enough to improve large-scale document searches online. The system uses pixel(像素)data in images and potentially video—rather than just text—to locate documents. It learns to recognize the pixels associated with a search phrase by studying the results from text-based image search engines. The knowledge gleaned(收集)from those results can then be applied to other photos without tags or captions(圖片說明),making for more accurate document search results.
3)“Over the last 30 years,” says Associate Professor Korenzo Torresani, a co-author of the study,” the web has evolved from a small collection of mostly text documents to a modern, massive, fast-growing multimedia datastet, where nearly every page includes multiple pictures of videos. When a person looks at a Web page, he immediately get the gist(主旨)of it by looking at the pictures in it. Yet, surprisingly, all existing popular search engine, such as Google or Bing, strip away the information contained in the photos and use exclusively the text of Wed pages to perform the document retrieval. Our study is the first to show that modern machine vision systems are accurate and efficient enough to make effective use of the information contained in image pixels to improve document search.”
4)The researchers designed and tested a machine vision system—a type of artificialintelligence that allows computers to learn without being explicitly programmed— that extracts semantic(語義的)information from pixels of photos in Web pages. This informationg is used to enrich the description of the HTML page used by search engines for document retrieval. The researchers tested their approach using more than 600 search queries(查詢)on a database of 50 million Wed pages. They selected the text-retrieval search engine with the best performance and modified it to make use of the additional semantic information extracted by their method from the pictures of the Web pages. They found tht this produced a 30 percent improvement in precision over the original search engine purely based on text.
23. Paragraph 1 _____
24. Paragraph 2 _____
25. Paragraph 3 _____
26 Paragraph 4 _____
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 document retrieval by _____.
28. The new system is expected to improve precision in _____.
29. When performing document retrieval the existing search engines ignore _____.
30. The new system was found more effective in document search than the _____.
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
第3部分：概括大意與完成句子(第23—30題，每題1分，共8分)
23-26. D C E F
27-30. C E A B
