免费好用的BI产品:http://www.qlik.com/zh-cn/lp/ppc/qlik-sense-desktop/brand
余弦度算法:http://www.ruanyifeng.com/blog/2013/03/cosine_similarity.html
Java实现余弦定理计算文本相似度:http://blog.csdn.net/fjssharpsword/article/details/53693115
java处理文本计算词频工具类:http://blog.csdn.net/fqf_520/article/details/52787510
Java实现敏感词过滤 - IKAnalyzer中文分词工具:
https://www.cnblogs.com/magicalSam/p/7473791.html
倒计时插件:http://www.htmleaf.com/html5/html5-canvas/201502111366.html
拖拽上传:http://www.htmleaf.com/Demo/201510142664.html