javabb086

ID3 is data classification algorithm.it is used to generate decision tree from given data set.decision is used to make strategic decision from generated decision tree.

多文件上传下载的程序 一个功能很强的文件管理程序，可以支持文件上传下载 ，文件夹的管理等(Multi-file upload to download the program a very strong function of document management procedures, can support the file upload downloads, folder management, etc.)

1、任务管理中，添加任务时去掉了分类和日期的必须输入检查，更方便快速添加； 相应的数据库脚本中，任务表(todo)的任务分类ID(CATEGORY_ID)和处理时间(DEAL_DATE)字段修改为允许空值； 2、任务管理中，修改了当点击新添加行的优先级和状态时也相应事件的Bug； 3、添加了相册名称和文档名称的最大长度验证； 4、笔记模块，修改直接添加笔记时，无法从相册添加图片的Bug； 5、用户管理模块更名为系统管理，并添加了系统设置功能，可以直接在页面上设置如下信息： 邮箱服务器、邮箱账号、邮箱密码、是否开放注册、相册缩略图尺寸； 升级时注意数据库脚本的修改。 (1, task management, add tasks remove classification and date when the must input inspection, more convenient fast add The corresponding database scripts, task lists (todo) task CATEGORY_ID) and the ID (classification processing time (DEAL_DATE) field modification to allow null values 2, task management in a click new add, modify did when priority and status of the corresponding events Bug 3, added album name and document name maximum length of validation 4, notes module, modify, cannot directly add notes from the album the Bug add images 5, user management module was renamed system management, and add system functions, can be directly on the page set the following information: Mailbox server, email accounts, E-mail passwords, is open registration, photo album thumbnail size Upgraded the modification. Attention database script )

this is answer for ssd7 exercise 4

功能强大的webmail服务端,功能强大的webmail服务端,功能强大的webmail服务端,(Powerful webmail server, webmail powerful server, a powerful webmail client services,)

一个命题，是表达了对象之间关系的概念结构。命题必须符合以下规则：它必须是抽象的；它必须与一个真值关联；它必须符合一定的形式化规则。按照命题理论，(A proposition is to express the concept of the relationship between the object structure. Proposition must meet the following rules: it must be abstract it must be associated with a true value it must meet certain formal rules. In accordance with the proposition theory)

1D的薛定谔－泊松自洽求解 用于模拟半导体器件中的电势 电场等特性(1D Schrodinger- Poisson self-consistent solution )

Arrays in java introduction

Perst开源实时数据库，据说非常不错，大家可以到此互相学习交流。(Perst open source real-time database, said to have been very good, everyone can learn from each other to this exchange.)

3.设计一个幻灯片播放窗口，在窗口中点击鼠标时，在红、绿、蓝三种颜色的面板之间切换。程序文件命名为Exe8_3.java。(3. Design a slideshow window, click the mouse, in between red, green, and blue switch panel in the window. Program file named Exe8_3.java.)