ORA-13861: Statistics aggregation for client identifier string is already enabled
文档解释ORA-13861:StatisticsaggregationforclientidentifierstringisalreadyenabledCause:AttempttoenableaclientidentifieraggregationwhichhasbeenalreadyenabledAction:Su...
ORA-30486: invalid window aggregation group in the window specification
文档解释ORA-30486:invalidwindowaggregationgroupinthewindowspecificationCause:IfthewindowspecificationisspecifiedusingRANGEoptionandtherearemultipleORDERBYexpression...
ORA-13862: Statistics aggregation for client identifier string is not enabled
文档解释ORA-13862:StatisticsaggregationforclientidentifierstringisnotenabledCause:AttempttodisableaclientidentifierstatisticsaggregationwhichwasneverenabledAction:S...
ORA-13864: Statistics aggregation for service (module/action) string is already enabled
文档解释ORA-13864:Statisticsaggregationforservice(module/action)stringisalreadyenabledCause:Attempttoenableaservice-levelstatisticsaggregationwhichhasbeenalreadyena...
Efficient and Accurate Arbitrary-Shaped Text Detection with Pixel Aggregation Network（利用像素聚合网络进行高效准确的任意形状文本检测）
PSENetV2昨日刚出，今天翻译学习一下。 场景文本检测是场景文本阅读系统的重要一步，随着卷积神经网络的快速发展，场景文字检测也取得了巨大的进步。尽管如此，仍存在两个主要挑战，它们阻碍文字检测部署到现实世界的应用中。第一个问题是速度和准确性之间的平衡。第二个是对任意形状的文本实例进行建模。最近，已经提出了一些方法来...
Mongodb aggregation 基本操作示例
MongoDB二个主要的操作：一个是查询，另一个是统计。对于查询而言，主要是find()方法，再配合Filters组合多个查询条件。对于统计而言，则主要是aggregate操作，比如group、sum、avg、project、match……aggregate可以将上述操作组织成pipelin...