contact-management-system

概念格建格代码，模型的建立概念格（Concept Lattice）是一个以概念为元素的偏序集，它可以通过Hasse图可视化，其中每个节点是一个概念。概念格结构模型来源于形式概念分析（FCA）理论，是FCA中的核心数据分析工具，它本质上描述了对象（样本）与属性（特征）之间的关联。[1](The concept lattice (Concept, Lattice) is a poset of concept elements, which can be visualized by Hasse diagrams, where each node is a concept. The concept lattice structure model, derived from formal concept analysis (FCA) theory, is the core data analysis tool in FCA, which essentially describes the association between objects (samples) and attributes (features))

说明：  spring demo as spring boot

在Windows的eclipse中查看JVM的所有线程的活动状态(View activity status of all threads in the JVM)

ReportProperties implements IAppErrorCodes.

以及在 mysql 数据库中索引的工作机制是什么？ 有哪些数据库优化方面的经验? 数据库三范式是什么? 各大厂数据库面试热门考题

关于文件处理的类(on the category of document processing)

在Java中导入Excel2007或者Excel2003文档的数据(In Java import Excel2007 or Excel2003 document data)

不多说了同上来估wqrwqrwqdwfdvdfdfdf(dwqdwqdwqrdwqrwqfwefwes)

基于原型的目标函数聚类方法，数据点到原型的某种距离作为优化的目标函数，利用函数求极值的方法得到迭代运算的调整规则(A prototype based objective function clustering method, the data point to a certain distance from the prototype is used as the objective function of the optimization, and the adjustment rule of the iterative operation is obtained by the method of finding the extremum of the function.)

一个repasts的例子，在gis环境加入agent，并使得agent移动(Example of a repasts, gis environment in the accession agent, and makes the mobile agent)