概括大意和完成句子共用题干First Image-recognition Software1. D

概括大意和完成句子

共用题干

First Image-recognition 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（运算法则）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 en-gines. The knowledge gleaned

（收集）from those results can then be applied to other photos without tags or captions（图片说明）,making

for more accurate document search results.

3. "Over the last 30 years,"says Associate Professor Lorenzo Torresani,a co-author of the stud-y,"the Web

has evolved from a small collection of mostly text documents to a modern,massive, fast-growing multimedia

data set,where nearly every page includes multiple pictures or videos. When a person looks at a Web page,

he immediately gets the gist（主旨）of it by looking at the pictures in it.Yet,surprisingly,all existing

popular search engines,such as Google or Bing, strip away the information contained in the photos and use

exclusively the text of Web 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 pix- els to improve document search."

4. The researchers designed and tested a machine vision system-a type of artificial intelligence that

allows computers to learn without being explicitly programmed-that extracts semantic（语义的）information

from the pixels of photos in Web pages. This information is used to enrich the description of the HTML

page used by search engines for document retrieval.The researchers test-ed their approach using more than

600 search queries（查询）on a database of 50 million Web 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 that this produced a 30 percent

improvement in precision over the original search engine purely based on text.

Paragraph 1______

A. Function of the new system

B. Improvement in document retrieval

C. Publication of the new discovery

D. Problems of the existing search engines

E. Popularity of the new system

F. Artificial intelligence software created