The probabalistic approach , combined with some hard work on the part of the developers , allows spamfilter to catch much more spam with a lower false - positive rate than previous generations of spam filters 简而言之，与垃圾邮件对抗中一般基于规则的方法就是维护太麻烦、太耗时、太呆板和对用户太不友好。这些是spamassassin开发人员着手要修正的问题。
In one of the cases , the positive rate of cd25 was decreased by 17 . 1 % meanwhile mean fluorescent intensity by 50 . 8 % , also the positive rate of cd69 was decreased by 16 . 7 % meanwhile mean fluorescent intensity by 56 . 7 % 7 ，平均荧光强度降低56 7 。上述结果表明：反义c11ta可以部分抑制组成型和诱导型mhc刁类分于的表达，导致t细胞活化受到影响。
Methods impedance pneumoplethysmogram ( ipg ) and impedance respirogram ( irg ) were detected in 64 cases of patients with phd , and investigate dmf rheogram positive rate , also analysed various parameters of ipg in positive and negative groups 方法对64例肺心病患者进行呼吸阻抗图和肺阻抗图检测，分组统计膈肌疲劳图形阳性率；并对阳性组和阴性组进行肺阻抗图各参数比较。
The results showed that the total coincidence rate between digfa and sat and the coincidence on positive rate of detection were 99 . 88 % ( 4003 / 4008 ) and 94 . 25 % ( 82 / 87 ) , respectively , and the sensitivity of digfa appeared to be higher in population with brucellosis and in high - titered serum samples 方法用已建立的布病滴金免疫测定技术检测不同职业和不同感染类型人员的布病抗体，并与布病试管凝集试验作平行检测。
In analyze the deficiency of traditional intrusion detection system , a new kind of intrusion detection method , which named edid ( an intrusion detection method based on euclidean distance ) is put forward for reduce false positive rate 在此基础上，将欧氏距离( euclideandistance )引入了入侵检测系统以降低入侵检测系统的误报率，并提出了基于euclidean距离的入侵检测方法intrusiondetectionbasedoneuclideandistance ( edid ) 。
In order to achieve , for example , a positive rate of return for the exchange fund , year by year , the approach to investment management would necessarily involve the taking of less risk , the acceptance of a lower average rate of return for the longer term and lower liquidity 举例说，若要年复年地都能够为外汇基金取得正数投资回报，所采用的投资管理方法便必须是承担较低的风险，以及接纳长期来说较低的平均回报率及较低的流动性。
Naids is the first data mining based anomaly detection system , the first intrusion detection system which lower false positive rate by classification engineering , the first intrusion detection system which put forward sliding windows techniques to carry out incremental , on - line mining Naids是第一个基于数据挖掘方法的异常检测系统，是第一个通过分类引擎来降低误报率的入侵检测系统，是第一个提出滑动窗口技术实施在线增量式挖掘的入侵检测系统。
Subsequently , weighted association rules algorithm is given in order to solve the problem of improving detection rate but increasing false positive rate when association rules are applied to the detection system . the method can to some extent improve detection rate of the intrusion detection system , confine the produce of uninteresting rules , and decrease false 为了解决将关联规则算法应用于入侵检测系统提高系统检测率的同时也增加系统误报率的问题，论文把加权关联规则算法应用于入侵检测系统，此方法能在一定程度上提高了入侵检测的检测率也限制了无趣规则的产生，并降低了误报率。
Subsequently , it in the paper gives weighted association rules algorithm in order to solve the problem of improving detection rate but increasing false positive rate when association rules are applied to the detection system . the method can to some extent improve detection rate of the intrusion detection system , confine the produce of uninteresting rules , and decrease false positive rate 首先我研究了关联规则的各种实用算法及其改进算法，之后为了解决将关联规则算法应用于入侵检测系统提高系统检测率的同时也增加系统误报率的问题，论文给出加权关联规则详细的算法说明，并将此方法应用于入侵检测。
Campaired with the control groups , the absolute weight , grouth index and cell cycle of immune organs , the anae positive rates of t lymphocytes in peripheral blood , the erythrocyte c3brr and cic rosette rates were singnificantly changed in the zinc - deficient and zinc - toxic ducklings . histopathologically , lymphocytes of the immune organs were depleted , degenerated and necrotic in both zinc - deficient and zinc - toxic ducklings 缺锌和锌中毒组免疫器官的绝对重量、生长指数、细胞生长周期以及t淋巴细胞anae ~ +阳性率、红细胞c _ 3b受体花环、免疫复合物花环率与对照组比较差异显著( p 0 . 05 )或极显著( p 0 . 01 ) 。
