Chrome Topics 即時出價實驗

透過 Privacy Sandbox,Chrome 提議進行實驗 Topics API: Topics API 可在網頁上提供第三方呼叫端 (包括廣告技術) 供應商),以及網頁訪客可能感興趣的概略廣告主題 感興趣的主題主題可以補充背景資訊 的相關內容,對於按照興趣顯示的廣告也相當實用 廣告。

透過出價要求中的即時出價合作夥伴,您可以使用 Topics API 實驗。系統會根據 availability [供應情形]

出價要求表示法

OpenRTB 通訊協定

主題在 OpenRTB BidRequest.user.data 中以區隔表示 撰寫新的電子郵件訊息

欄位 類型 說明
Data.ext.segtax 整數 集中註冊的分類 ID。針對 Topics,這是定義每個主題 ID 語意含義的版本。600 用於 Chrome 的 Topics 初始分類。
Data.ext.segclass 字串 等同於 classifier_version
Data.segment.id 字串 等同於 id,已轉換為字串。

Data.extBidRequest.user.data 訊息的擴充功能。這個額外資訊 我們已提供通訊協定公開測試版的內容。

定義如下:

// Ad Exchange extensions for the Data object.
message DataExt {
  // The ID for a taxonomy that is registered centrally. Used to define the
  // namespace and semantic meaning of the segment IDs. See
  // https://github.com/InteractiveAdvertisingBureau/openrtb/blob/master/extensions/community_extensions/segtax.md#enumeration-of-taxonomies
  // for the enumeration of the taxonomies that this value can take. Currently
  // only Chrome Topics API taxonomy (segtax=600) is supported.
  optional int32 segtax = 1;

  // The version of the classifier which produced the segment IDs within the
  // taxonomy. For example, in the case of Chrome Topics API (segtax=600), this
  // is the version of the classifier used by the browser to map hostnames to
  // topics in the taxonomy.
  optional string segclass = 2;
}

Google RTB 通訊協定 (已淘汰)

主題會顯示在 BidRequest 訊息的 topics 欄位中。這個 通訊協定公開測試版本中提供的欄位。

定義如下:

  // Experimental field; subject to change.
  // A coarse-grained topic that a website visitor might currently be interested
  // in based on recent browsing activity. See
  // https://developer.chrome.com/docs/privacy-sandbox/topics/ and/or
  // https://privacysandbox.com/intl/en_us/proposals/topics/ for more
  // information about the Topics API. Reach out to your account manager to
  // participate in the Topics API experiment.
  message Topic {
    // The value of a topic ID. A numerical identifier corresponding to a
    // coarse-grained advertising topic. See
    // https://github.com/patcg-individual-drafts/topics/blob/main/taxonomy_v1.md
    // for a list of topics in the initial taxonomy.
    optional int32 id = 1;
    // The version of the advertising taxonomy which defines the semantic
    // meaning of each topic ID for the topics, for example "v1".
    optional string taxonomy_version = 2;
    // The version of the classifier used by the browser to map hostnames to
    // topic IDs in the taxonomy.
    optional string classifier_version = 3;
  }

  // The list of topics that a website visitor might currently be interested in
  // inferred by the browser based on recent browsing activity. See
  // https://developer.chrome.com/docs/privacy-sandbox/topics/ and/or
  // https://privacysandbox.com/intl/en_us/proposals/topics/ for more
  // information about Topics API.
  repeated Topic topics = 74;

範例

以下舉例說明 Google Authorized Buyers 和 OpenRTB 通訊協定代表 Chrome Topics API 傳回的主題。

Chrome Topics API 回應,由 document.browsingTopics() 傳回:

[
  {
    "modelVersion": "classifier_v1",
    "taxonomyVersion": "taxonomy_v1",
    "topic": 3
  },
  {
    "modelVersion": "classifier_v1",
    "taxonomyVersion": "taxonomy_v1",
    "topic": 44
  },
  {
    "modelVersion": "classifier_v1",
    "taxonomyVersion": "taxonomy_v1",
    "topic": 59
  }
]

OpenRTB BidRequest

{
  "user": {
    "data": [
      {
        "ext": {
          "segtax": 600,
          "segclass": "classifier_v1"
        },
        "segment": [
          { "id": "3" },
          { "id": "44" },
          { "id": "59" }
        ]
      }
    ]
  }
}

Google RTB 通訊協定 (已淘汰) BidRequest

topics {
  id: 3
  taxonomy_version: "taxonomy_v1"
  classifier_version: "classifier_v1"
}
topics {
  id: 44
  taxonomy_version: "taxonomy_v1"
  classifier_version: "classifier_v1"
}
topics {
  id: 59
  taxonomy_version: "taxonomy_v1"
  classifier_version: "classifier_v1"
}

在上方的 Chrome Topics API 範例中,taxonomy_version 表示 taxonomy_v1 對應的 根據分類,這些主題 ID 會對應至以下項目 主題:

主題 ID 主題值
3 /藝術與娛樂/漫畫
44 歲 /藝術與娛樂/歌劇
59 個 /汽車與交通工具/經典車款

可用性

出價要求中的主題取決於現有隱私權 保護措施和控制選項例如,如果使用者選擇加入 不在個人化廣告中 非個人化廣告 廣告空間。