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社交网络机器账号检测综述 被引量:5
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作者 李阳阳 曹银浩 +4 位作者 杨英光 金昊 杨阳朝 石珺 李志鹏 《中国电子科学研究院学报》 北大核心 2021年第3期209-219,共11页
随着移动互联网的大面积普及,社交网络用户数量在这些年也呈指数级增长,比如国外的推特和国内的微博等。与此同时社交网络中的机器账号也在大幅增长,这些机器账号不仅散布广告和低俗信息,甚至会模仿正常用户发言来操控舆论,挑拨对立,影... 随着移动互联网的大面积普及,社交网络用户数量在这些年也呈指数级增长,比如国外的推特和国内的微博等。与此同时社交网络中的机器账号也在大幅增长,这些机器账号不仅散布广告和低俗信息,甚至会模仿正常用户发言来操控舆论,挑拨对立,影响用户间正常的交流和社交网络氛围。因此机器账号检测应运而生,需要检测社交平台中的机器账号数量来避免正常用户被误导,并呈现出真实的舆论环境。文中介绍了这些年主流的机器账号检测方案:众包检测平台,基于机器学习的方案,基于深度学习的方案,基于社交关系图的方案和主动式检测方案等。并大体介绍了用于机器账号检测的各项算法技术,总结了各项技术的优缺点。最后本文总结了当前机器账号检测中存在的一些问题和难点,展望了相关研究的未来发展方向。 展开更多
关键词 社交机器人 社交网络 机器账号 机器学习 深度学习
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Demonstration and Radiation Extension mode of Agricultural Technology——A Case of the Science and Technology Project of High Yield in Hebei Province 被引量:1
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作者 WANG Xiao-ying SHI Zheng +1 位作者 yang ying-guang ZHAO Hui-feng 《Asian Agricultural Research》 2010年第2期37-39,44,共4页
Firstly,relying on the science and technology project of high yield in Hebei Province,connotation of agricultural technology demonstration and extension mode and the high yield grain project in Hebei Province is intro... Firstly,relying on the science and technology project of high yield in Hebei Province,connotation of agricultural technology demonstration and extension mode and the high yield grain project in Hebei Province is introduced.Extension mode of agricultural technology demonstration and radiation is constructed.Agricultural technology demonstration and radiation mode includes the radiation center,primary irradiation and secondary irradiation.Secondly,management system and operational mechanism of agricultural technology demonstration and radiation mode are discussed,mainly expressed in establishing leading group in each demonstration county(city),carrying out leader contract responsibility system,establishing expert advisor steering group and setting up core experts group for subject,establishing technical experts group for subject,setting up leading group in the radiation area,carrying out chief expert responsibility system and technician matrix responsibility system,establishing the operating mechanism of "open,flow,competition and collaboration" with "test area-expert two-way selection" as the core content.Finally,countermeasures to improve the agricultural technology demonstration and radiation mode is put forward,such as establishing the rural technology demonstration base,strengthening cooperation with enterprises,and adopting flexible technical training,so as to promote the spread of agricultural high-tech,to increase the contribution rate of agricultural technology,and to offer ideas for agricultural technology extension model at the new era. 展开更多
关键词 Science and technology project of high yield Demonstration and radiation Agricultural extension mode China
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