IGB/T32909—2016目次前言.....................................................................................DI1范围...........................................................................12规范性引用文件...........................................................................13术语和定义...............................................................................14缩略语...................................................................................15非结构化数据DDL表示框架.................................................................25.1概述................................................................................25.2整体框架............................................................................25.3基本抽象描述符......................................................................35.4基本抽象描述方案....................................................................55.5根元素..............................................................................76数据类型.................................................................................86.1基本数据类型.......................................................................86.1.1数值数据类型....................................................................86.1.2字符串数据类型..................................................................96.1.3日期数据类型....................................................................96.2扩展数据类型.......................................................................IO6.2.1标量...........................................................................IO6.2.2向量...........................................................................116.2.3矩阵...........................................................................117基本属性描述............................................................................137.1基本元素...........................................................................137.1.1唯一标识符描述符...............................................................137.1.2时间描述方案...................................................................137.1.3人物描述符.....................................................................137.1.4地点描述方案...................................................................147.2创建信息描述方案...................................................................147.3修改信息描述方案...................................................................157.4格式与大小描述方案.................................................................157.5数据定位描述符.....................................................................168语义特征描述............................................................................168.1对象描述方案......................................................................168.2事件描述方案.......................................................................178.3概念描述方案.......................................................................178.4数据编码描述方案...................................................................178.5数据语义描述方案...................................................................18∏GB/T32909—20169底层特征描述............................................................................199.1图像类型................................
