存取模型摘要檔案

摘要檔案會包含模型的整體評估結果資訊，以及每個標籤的指標。指標為精確度、取回率、F1 分數。也會提供模型的閥值。摘要檔案位置可從由 DescribeProjectVersions 傳回的 EvaluationResult 物件存取。如需詳細資訊，請參閱參考：訓練結果摘要檔案。

以下是範例摘要檔案。

{
  "Version": 1,
  "AggregatedEvaluationResults": {
    "ConfusionMatrix": [
      {
        "GroundTruthLabel": "CAP",
        "PredictedLabel": "CAP",
        "Value": 0.9948717948717949
      },
      {
        "GroundTruthLabel": "CAP",
        "PredictedLabel": "WATCH",
        "Value": 0.008547008547008548
      },
      {
        "GroundTruthLabel": "WATCH",
        "PredictedLabel": "CAP",
        "Value": 0.1794871794871795
      },
      {
        "GroundTruthLabel": "WATCH",
        "PredictedLabel": "WATCH",
        "Value": 0.7008547008547008
      }
    ],
    "F1Score": 0.9726959470546408,
    "Precision": 0.9719115848331294,
    "Recall": 0.9735042735042735
  },
  "EvaluationDetails": {
    "EvaluationEndTimestamp": "2019-11-21T07:30:23.910943",
    "Labels": [
      "CAP",
      "WATCH"
    ],
    "NumberOfTestingImages": 624,
    "NumberOfTrainingImages": 5216,
    "ProjectVersionArn": "arn:aws:rekognition:us-east-1:nnnnnnnnn:project/my-project/version/v0/1574317227432"
  },
  "LabelEvaluationResults": [
    {
      "Label": "CAP",
      "Metrics": {
        "F1Score": 0.9794344473007711,
        "Precision": 0.9819587628865979,
        "Recall": 0.9769230769230769,
        "Threshold": 0.9879502058029175
      },
      "NumberOfTestingImages": 390
    },
    {
      "Label": "WATCH",
      "Metrics": {
        "F1Score": 0.9659574468085106,
        "Precision": 0.961864406779661,
        "Recall": 0.9700854700854701,
        "Threshold": 0.014450683258473873
      },
      "NumberOfTestingImages": 234
    }
  ]
}