coursera上的公开课《https://www.coursera.org/course/textanalytics》系列,讲的非常不错哦。 1、“term as topic”有很多问题: 2、Improved Idea: Topic = Word Distribution: 3、定义问题(Probabilistic Topic Mining and Anal
写sql语句分别按日,星期,月,季度,年统计销售额--按日select sum(consume),day([date]) from consume_record where year([date]) = '2006' group by day([date])--按周quarterselect sum(consume),datename(week,[date]) from consume_...