大数据计算:如何仅用1.5KB内存为十亿对象计数 Big Data Counting: How To Count A Billion Distinct Objects Using Only 1.5K This is a guest post by Matt Abrams (@abramsm), from Clearspring, discussing how they are able to accurately estimate the cardinality of sets with bi
1.准备工作 如果想要ENVI友好一点,请下载ENVI5.3,并且安装China satellites 补丁(参考博客:ENVI扩展工具:中国国产卫星支持工具) App Store for ENVI下载地址:http://blog.sina.com.cn/s/blog_764b1e9d0102xl5j.html China satellites :https://pan.baidu.com/s/1miL3euk 密码:obyz 1) 将下载的 Zip 文件解压到 ENVI 安装路径下(覆盖同名