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Metric§3.2.5 · Bid Request

该对象以指标(metrics)数组的形式与展示关联。这些指标可提供关于展示的洞察以辅助决策(decisioning),如近期平均可见性(viewability)、点击率等。每条指标由其类型标识、上报指标取值,并可选地标明测量该取值的来源或供应商。译稿校对中ENThis object is associated with an impression as an array of metrics. These metrics can offer insight into the impression to assist with decisioning such as average recent viewability, click-through rate, etc. Each metric is identified by its type, reports the value of the metric, and optionally identifies the source or vendor measuring the value.

本页目录
AttributeTypeDescription
type
required
string所呈现指标的类型,使用交易平台(exchange)预先整理(curated)的字符串名称,该名称应事先(a priori)向竞价方公布。必填(required)。译稿校对中ENType of metric being presented using exchange curated string names which should be published to bidders a priori.
value
required
float表示指标取值的数值。概率类指标必须落在 0.0 – 1.0 区间内。必填(required)。译稿校对中ENNumber representing the value of the metric. Probabilities must be in the range 0.0 – 1.0.
vendor
string取值的来源,使用交易平台预先整理(curated)的字符串名称,该名称应事先(a priori)向竞价方公布。若来源为交易平台自身而非第三方,建议使用 “EXCHANGE”。译稿校对中ENSource of the value using exchange curated string names which should be published to bidders a priori. If the exchange itself is the source versus a third party, “EXCHANGE” is recommended.
ext
object供交易平台对 OpenRTB 进行专属扩展(exchange-specific extensions)的占位对象。译稿校对中ENPlaceholder for exchange-specific extensions to OpenRTB.

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译者注

Metric:以数组形式与 Imp 关联,为展示提供洞察以辅助决策(decisioning),如近期平均可见性(viewability)、点击率(click-through rate)等;业内文档一般保留英文对象名 Metric。每条指标由其类型(type)标识、上报取值(value),并可选地标明测量来源(vendor)。译稿校对中

供给侧质量信号:Metric 承载的是供给侧对展示的质量预判(可见性、CTR 等),竞价方可将其作为出价策略的输入;与 Device/User 侧的受众信号属于不同维度,勿混淆。译稿校对中

type / vendor 的受控词表:二者均为交易平台整理的字符串名称,须事先向竞价方公布,否则无法解析语义——与 Device.carrier、Data/Segment 的 a priori 约束同理。译稿校对中

value 的取值约束:仅概率类指标受 0.0 – 1.0 区间约束(如可见性概率);非概率类指标(如历史 CTR 均值、停留时长等)无此限制,解析时应按 type 语义区分处理。译稿校对中

EXCHANGE 约定:当指标来源是交易平台自身(而非第三方测量商)时,建议使用保留值 “EXCHANGE”;第三方来源则使用交易平台公布的对应供应商名称(如主流可见性测量商)。译稿校对中

字段描述已与 2.6 官方 draft 对账;2.5 独有字段来自第三方 Go 实现源(Apache 2.0),官方 PDF 兜底校对 · 初稿校对中