Most of the spam filtering techniques are based on objective methods such as the content filtering and DNS/reverse DNS checks. Recently, some cooperative subjective spam filtering techniques are proposed. Objective me...Most of the spam filtering techniques are based on objective methods such as the content filtering and DNS/reverse DNS checks. Recently, some cooperative subjective spam filtering techniques are proposed. Objective methods suffer from the false positive and false negative classification. Objective methods based on the content filtering are time consuming and resource demanding. They are inaccurate and require continuous update to cope with newly invented spammer’s tricks. On the other side, the existing subjective proposals have some drawbacks like the attacks from malicious users that make them unreliable and the privacy. In this paper, we propose an efficient spam filtering system that is based on a smart cooperative subjective technique for content filtering in addition to the fastest and the most reliable non-content-based objective methods. The system combines several applications. The first is a web-based system that we have developed based on the proposed technique. A server application having extra features suitable for the enterprises and closed work groups is a second part of the system. Another part is a set of standard web services that allow any existing email server or email client to interact with the system. It allows the email servers to query the system for email filtering. They can also allow the users via the mail user agents to participate in the subjective spam filtering problem.展开更多
1材料和方法1.1材料我院感染科1996-08/1999-12收治的各种类型的肝炎患者2065例,男1675例,女408例,年龄17岁～84岁,平均(38±13)岁;住院时间1d～218d,平均(25±17)d;肝炎类型包括急性肝炎、慢性轻度肝炎、慢性中度肝炎、慢性重...1材料和方法1.1材料我院感染科1996-08/1999-12收治的各种类型的肝炎患者2065例,男1675例,女408例,年龄17岁～84岁,平均(38±13)岁;住院时间1d～218d,平均(25±17)d;肝炎类型包括急性肝炎、慢性轻度肝炎、慢性中度肝炎、慢性重度肝炎和慢性重症肝炎.1.2方法肝炎诊断符合1995年北京会议《病毒性肝炎防治方案》诊断标准;医院感染参照卫生部颁发的医院内感染诊断标准.采取分析病历记录、医嘱单及各项辅助检查结果,并填写统一规格的调查表.统计学处理采用 SAS 软件进行.展开更多
文摘Most of the spam filtering techniques are based on objective methods such as the content filtering and DNS/reverse DNS checks. Recently, some cooperative subjective spam filtering techniques are proposed. Objective methods suffer from the false positive and false negative classification. Objective methods based on the content filtering are time consuming and resource demanding. They are inaccurate and require continuous update to cope with newly invented spammer’s tricks. On the other side, the existing subjective proposals have some drawbacks like the attacks from malicious users that make them unreliable and the privacy. In this paper, we propose an efficient spam filtering system that is based on a smart cooperative subjective technique for content filtering in addition to the fastest and the most reliable non-content-based objective methods. The system combines several applications. The first is a web-based system that we have developed based on the proposed technique. A server application having extra features suitable for the enterprises and closed work groups is a second part of the system. Another part is a set of standard web services that allow any existing email server or email client to interact with the system. It allows the email servers to query the system for email filtering. They can also allow the users via the mail user agents to participate in the subjective spam filtering problem.
文摘1材料和方法1.1材料我院感染科1996-08/1999-12收治的各种类型的肝炎患者2065例,男1675例,女408例,年龄17岁～84岁,平均(38±13)岁;住院时间1d～218d,平均(25±17)d;肝炎类型包括急性肝炎、慢性轻度肝炎、慢性中度肝炎、慢性重度肝炎和慢性重症肝炎.1.2方法肝炎诊断符合1995年北京会议《病毒性肝炎防治方案》诊断标准;医院感染参照卫生部颁发的医院内感染诊断标准.采取分析病历记录、医嘱单及各项辅助检查结果,并填写统一规格的调查表.统计学处理采用 SAS 软件进行.
