北京天演融智软件有限公司
使用期限:*版许可形式:单机和网络版原产地:美国介质:下载版适用平台:Windows或Mac
科学软件网是一个以引进国外科研软件,提供软件服务的营业网站,网站由北京天演融智软件有限公司创办,旨在为国内高校、科研院所和以研发为主的企业事业单位提供的科研软件及相关软件服务。截止目前,科学软件网已获得数百家国际软件公司正式授权,代理销售科研软件达一千余种,软件涵盖领域包括经管,仿真,地球地理,生物化学,工程科学,排版及网络管理等。同时,还提供培训、视频课程(包含34款软件,66门课程)、实验室解决方案和项目咨询等服务。
Systematic from random start: From the j'th observation in the initial table, an observation is extracted every k observations to be used in the sample. j is chosen at random from among a number of possibilities depending on the size of the initial table and the size of the final sample. k is determined such that the observations extracted are as spaced out as possible
Go futher with XLSTAT Basic+ which includes Machine Learning and more modeling techniques.
User defined: A variable indicates the frequency of each observation within the output sample.
Training and test sets: Data are split into two parts – a training set and a test set. The rows of each set are randomly drawn from the initial dataset. The size of the training set is defined by a number of rows.
Training and test sets (%): Data are split into two parts – a training set and a test set. The rows of each set are randomly drawn from the initial dataset. The size of the training set is defined by a row number percentage from the initial data set.
Random stratified (1): Rows are chosen at random within N sequences of observations of equal length, where N is determined by dividing the number of observations by the requested sample size;
软件升级及技术支持服务:科学软件网可向用户提供软件的本地化技术支持服务,包括软件更新升级、软件故障排除、售后安装调试、售后培训等;