数据挖掘

It is not a decision tree, so it need not the operation of pruning while it has ahigh running speed .

算法MARODS是挖掘数据流关联规则的算法，它能通过一次扫描，得到最大频繁项集。

Dynamical linear model includes state space model and system equation on the basis of stochastic chain ladder.

为了充分挖掘历史数据中隐藏的信息，贝叶斯估计理论被引入到随机模型的参数评估中。

Experimental results of synthetic data show the algorithm is effective to resolve the problem of mining weighted frequent patterns based on graph traversals.

针对合成数据的实验结果表明该算法能够有效地进行基于图遍历的加权频繁模式挖掘。

Modern science and technology provide enormous convenient for gaining information from researched system, however, the research of the disposing method of information which is identified , rootled , filtered and confomified is lagged.

现代的科学技术为获取待研究系统的信息提供了前所未有的便利，然而其信息数据的识别、挖掘、筛选与整合等信息处理方法的研究却明显滞后。

The primary aim of KDD is to find from a large amount of data the potentially useful information with effective mining approaches. Such information can be used to support commercial decisions, scientific discoveries and information retrievals.

KDD的主要目的是要通过各种有效的挖掘方法从大量数据中找到潜在有用的信息，并利用它们对商业决策、科学观察以及信息检索提供强有力的支持。

In this paper, we focus on the finding of Distance-based outliers from large database.

本文的研究目标就是从数据集合中挖掘出基于距离的例外集合。

This paper devotes to mining the incomplete information of error data as prior knowledge, which can apply to the multi-stage inversion and improve the precision of some models parameters. Wetake the SAIL model as an example, and the results show that it is feasible. This thesis consists of four chapters.

本文致力于挖掘误差中未尽的信息作为先验知识，应用于多阶段遥感反演中以提高参数反演精度，并以SAIL模型为例，结果说明了把从误差数据中提取的先验信息用于提高遥感参数反演精度的可行性。

MR images was analyzed include tumor shape,margin, internal enhancement characteristics,distribution,and time-signal intensity curves,maximam enhancement ratio,early enhancement ratio and so on.The ADCs of lesions were calculated on ADC maps.Univariate and multivariate analysis of MR imaging data were performed to find the strongest discriminators and the Logestic regression model was established to predict the probabilities for malignancy.

由放射科医生采用双盲法阅片，根据乳腺MR影像报告及数据系统(BI-RADS MRI)，将病变按照不同形态学表现分为肿块和非肿块性病变两组，分析形态学表现(形状、边缘、分布特征、内部增强特征)、血流动力学表现(时间-信号强度曲线类型、最大增强率、达峰时间、早期增强率)，并结合ADC值，应用SPSS15.0软件进行单变量及多变量分析，挖掘有意义恶性征象，建立回归模型，计算其敏感性、特异性、准确性、阳性预测值和阴性预测值。

In view of the uncertainty of the settlement of the threshold in the heuristic process mining method proposed by Aalst to deal with the noise data in the log, a method of optimization settlement of threshold based on design of experiment analysis was proposed.

针对处理日志中噪音数据的启发式流程挖掘算法中阈值设置的不确定性，提出了基于试验设计的阈值优化设置方法。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。