查询词典 mining engineer

In a database the concept of an example might change along with time which is known as concept drift When the concept drift the classification model built by use of old data is unsuitable for classify new data Therefore concept drift has become a hot issue in data mining in recent years Although many algorithms had been proposed to resolve this problem they can not provide users with the reason of concept drift However a user might be very interested in such rules For example doctors want to find what makes disease change; researchers want to know the reason of the variety of the weather; and decision makers would like to understand why a customer's shopping habit change In this thesis we propose a Concept Drift Rule mining Tree called CDR-Tree to solve this problem CDR-Tree can not only find the rule of concept drift also build the prediction model for both old and new data at the same time

无论在大型资料库或现实生活中，同一资料样本的概念有可能会随著时间的递移而改变，也就是产生所谓的概念漂移。当样本发生概念漂移时，由旧有资料所建构的分类模组将不再适用於预测新获得的资料，因此，近年来概念漂移已成为资料探勘中一项热门的研究议题。虽然已有？多学者提出不同的技术来解决概念漂移的问题，但是这些方法都是利用修正或重建的方式来产生适合新资料的预测模组，并无法提供造成概念漂移的原因。然而对使用者而言，其感兴趣的可能正是这些引起概念漂移的规则，如医生可能想了解引起疾病变化的主因、学者会想要知道气候转变的规则、或是决策者想找出顾客购物习惯改变的因素等。因此，本论文提出概念漂移规则探勘树( Concept Drift Rule mining Tree )，简称CDR-Tree，来解决这个问题。CDR-Tree不但能探测出造成概念漂移的主要原因，亦能同时建立新旧资料的预测模组以供决策者运用使用。

As for these topics, a number of high-level addressers in the fields of mining investment and financing at home and abroad are invited to deliver speeches over issues of the mining capital market and investment.

关于这些议题，大会邀请了众多在矿业投资和融资领域的国内外高水平的发言人，他们会围绕关于矿业资本市场及投资问题发表演讲。

Philippine gold mines and the impact of mining of compound exists in the form, the main mining areas in Baguio, Paracale, Masbate, Surigao, and Masara.

菲律宾金矿以复合矿和冲击矿形式存在，主要矿区在Baguio， Paracale， Masbate， Surigao 和Masara。

The mining methods: a full size mine gallery, displays of river dredging by genuine 'bantams' from the Val River in South Africa, mine drilling machines and a unique model of the worlds first sub-sea mining machine NamSSol, showing, at the entrance of the ground floor, how diamonds are extracted from nature

在第一层的入口处展示了钻石矿的开采方法：一个真实大小的矿井坑道，显示了南非瓦尔河的真实的砾岩河底挖掘的情形、矿山钻孔机，以及世界上第一台海底采掘机的模型，展示了钻石是怎样从自然界中提取出来的。

A simple, but typical, process might include prepro- cessing data, applying a data-mining algorithm, and visualizing the mining results.

一个简单、但典型的数据挖掘过程可能包括数据预处理阶段，数据挖掘算法的应用阶段，以及对挖掘结果的可视化处理阶段。

Finally, the thesis defines the steps of implementing data mining, cognizes and summarizes the problems existed, and validates the feasibility that data mining can be used in the customer knowledge management, through a practice of excavation cluster analysis in a case of Grand Hotel client knowledge acquisition.

最后，通过在军山大酒店的客户知识获取应用实例中挖掘聚类分析的实践，明确了在客户知识实施数据挖掘的步骤，认识和总结出实践中出现问题，验证了数据挖掘方法在客户知识管理中运用的可行性。

Last, the evaluation index systems and evaluation methods were applied in the Tie Fa mining areas, and based on the evaluation result, corers pounding counter-measures for enhancing the sustainable development capacity of the mining areas are discussed.

为了增强可持续思想在研究和制定发展战略中的指导作用，就必须将矿区可持续发展目标具体化，即用一些可测量的定量指标将其明确地表征出来，并构成指标体系，对矿区可持续发展水平进行定量分析与评价，从而为矿区发展政策的制定提供定量支持。

Long time mining activities accumulate great amount of coal refuse which formes piles and becomes the main factor for environmental pollution and degradation in coal mining area.

摘要： 长期的采矿活动使煤矿区大量的煤矸石堆积形成煤矸石山，成为矿区环境污染和恶化的主要因素之一。

It indicated that mining technique in the condition of floor failure used above Longwall Goafs in Baijiazhuang Mining is totally feasible.

这表明，挖掘技术条件下的地板上面使用失败的实验Baijiazhuang矿区采空区完全可行。

Through years of gold mining's technical advantages, the mining machinery manufacturing Zhaoyuan brand.

通过多年来黄金开采的技术优势，为招远的矿山机械制造业树立品牌。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。