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Fig. 7. Strategic coordinate diagram of research front topics.
V. C ONCLUSION
The PLDA model is used to identify the research front
topics based on NSF fund projects information. These
projects were funded in the field of artificial intelligence from
2013 to 2018 years. The results show that intelligent system
and infrastructure construction, wireless power transmission,
quantum computing technology, intelligent simulation,
imaging technology, new materials and new detection device
research and development and so on, are mainly research
front contents of artificial intelligence in five years in NSF.
Exploring the front topic of the American artificial
intelligence from the perspective of NSF fund projects can
help us know well the research layout and development
direction of the American artificial intelligence early and
quickly, which plays an important role in the research of
artificial intelligence in China because we can obtain
quantitative information for prioritized technologies that
could be used for technology management and decision
making for research funding and technology investment, and
promote the research and development of artificial
intelligence in China.
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