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半小时,利用FEDB将你的Spark SQL模型变为在线服务-范式AI云的博客

 4 years ago
source link: https://blog.51cto.com/14858414/2509715
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SparkSQL在机器学习场景中应用第四范式已经在很多行业落地了上万个AI应用,比如在金融行业的反欺诈,媒体行业的新闻推荐,能源行业管道检测,而SparkSQL在这些AI应用中快速实现特征变换发挥着重要的作用SparkSQL在特征变换主要有一下几类1.多表场景,用于表之间拼接操作,比如交易信息表去拼接账户表2.使用udf进行简单的特征变换,比如对时间戳进行hour函数处理3.使用时间窗口和udaf

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