This paper first introduces the inevitability direction of Internet personal technique's development, and then analyzes the differences between Information Retrieval and Information Filtering. Further more, combin...This paper first introduces the inevitability direction of Internet personal technique's development, and then analyzes the differences between Information Retrieval and Information Filtering. Further more, combining with the group user interests and individual user interests, using VSM and FCM algorithm, this paper proposes a webpage recommendation model in personal surfing. This model can be applied not only in single website, but also in enterprise information collecting system. It also brings forward a method to extend concept. The advantage of the model is automatic concepts learning in the processing of user's feedback and browsing. Contrasting to concept dictionary method, it is more agility and gains well retrieval results.展开更多
现今世界上定期进行人口普查的国家越来越多,美国是世界上最早进行人口普查的国家,至今已有200年定期连续地进行全国人口普查的历史。美国人口普查每隔10年举行一次,规模巨大,耗资惊人,需收集1.06亿有关住户和2.5亿人口的重要资料。198...现今世界上定期进行人口普查的国家越来越多,美国是世界上最早进行人口普查的国家,至今已有200年定期连续地进行全国人口普查的历史。美国人口普查每隔10年举行一次,规模巨大,耗资惊人,需收集1.06亿有关住户和2.5亿人口的重要资料。1980年的人口普查支出按现值美金计算约达18亿,而1990年的预算支出将增至26亿美元。担负全美人口普查重任的是位于马里兰州的苏特兰的美国人口普查局(Bureau of the Census)。查理·琼斯(Charle Jones)和彼得·博恩潘(Peter Bounpane),两人在普查局已工作了40年,展开更多
With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applica...With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applications which can block or filter such information are used. Approaches in those systems can be roughly classified into two kinds: metadata based and content based. With the development of distributed technologies, content based filtering technologies will play a more and more important role in filtering systems. Keyword matching is a content based method used widely in harmful text filtering. Experiments to evaluate the recall and precision of the method showed that the precision of the method is not satisfactory, though the recall of the method is rather high. According to the results, a new pornographic text filtering model based on reconfirming is put forward. Experiments showed that the model is practical, has less loss of recall than the single keyword matching method, and has higher precision.展开更多
文摘This paper first introduces the inevitability direction of Internet personal technique's development, and then analyzes the differences between Information Retrieval and Information Filtering. Further more, combining with the group user interests and individual user interests, using VSM and FCM algorithm, this paper proposes a webpage recommendation model in personal surfing. This model can be applied not only in single website, but also in enterprise information collecting system. It also brings forward a method to extend concept. The advantage of the model is automatic concepts learning in the processing of user's feedback and browsing. Contrasting to concept dictionary method, it is more agility and gains well retrieval results.
文摘现今世界上定期进行人口普查的国家越来越多,美国是世界上最早进行人口普查的国家,至今已有200年定期连续地进行全国人口普查的历史。美国人口普查每隔10年举行一次,规模巨大,耗资惊人,需收集1.06亿有关住户和2.5亿人口的重要资料。1980年的人口普查支出按现值美金计算约达18亿,而1990年的预算支出将增至26亿美元。担负全美人口普查重任的是位于马里兰州的苏特兰的美国人口普查局(Bureau of the Census)。查理·琼斯(Charle Jones)和彼得·博恩潘(Peter Bounpane),两人在普查局已工作了40年,
文摘With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applications which can block or filter such information are used. Approaches in those systems can be roughly classified into two kinds: metadata based and content based. With the development of distributed technologies, content based filtering technologies will play a more and more important role in filtering systems. Keyword matching is a content based method used widely in harmful text filtering. Experiments to evaluate the recall and precision of the method showed that the precision of the method is not satisfactory, though the recall of the method is rather high. According to the results, a new pornographic text filtering model based on reconfirming is put forward. Experiments showed that the model is practical, has less loss of recall than the single keyword matching method, and has higher precision.
