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Facial recognition technology is already widely used by governments and some advertising companies.

英语试题 08-25
Facial recognition technology is already widely used by governments and some advertising companies. The technology uses machine learning tools to search for faces in an attempt to identify people.
In a recent study scientists announced they had developed machine learning tools to track the faces of individual wild chimpanzees (黑猩猩) .Dan Schofield said that the system was developed to improve the quality of information collected about chimpanzees in the wild over a long period of time.
"For species like chimpanzees which have complex social lives and live for many years, getting snapshots of their behavior from short-term field research cam only tell us so much," Schofield said.
The researchers. wanted to get a more complete understanding of the lives of the chimpanzees by studying them over several generations. But doing this would have required searching through hundreds of hours of video recordings of chimpanzees in the wild.
The researchers recorded the activities of a group of chimpanzees that lived in the West African nation of Guinea. A facial recognition computer model was trained using more than 10 million images of the animals. The model was then used to search, recognize and track individual chimpanzees. The system was able to identify individual chimpanzees correctly about 92 percent of the time. It successfully ( identified the animals' sex 96 percent of the time.
The study included an experiment with humans to see how they could perform against the machine learning system in making identifications. The human persons were able to correctly identify individual chimpanzees about 42 percent of the time.The machine learning tool was much faster at completing the experiment," Human experts took about 55 minutes, while the computer took only seconds.
The researchers say they are permitting other scientists to use the system for similar projects. They hope the method will be used with other species to record animal behavior and monitor different animal populations in the environment.
32. What can we infer from Schofield's words?
A. Researching chimpanzees needs more information.
A Chimpanzees can live as long as humans.
C. Chimpanzees like to get snapshots too.
D. Shot-term field research provides more information,
33. What does the underlined word "this" refer to?
A. Recording the chimpanzees in the wild,
B. Studying chimpanzees over several years.
C. Understanding the lives of the chimpanzees completely.
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