小编Luk*_*kas的帖子

我使用 Scikit-Learn Python API 在 Python 中训练了一个 xgboost 模型，并使用pickle库对其进行序列化。我将模型上传到 ML Engine，但是当我尝试进行在线预测时，出现以下异常：

Prediction failed: Exception during xgboost prediction: can not initialize DMatrix from DMatrix

我用于预测的 json 示例如下：

{  
   "instances":[  
      [  
         24.90625,
         21.6435643564356,
         20.3762376237624,
         24.3679245283019,
         30.2075471698113,
         28.0947368421053,
         16.7797359774725,
         14.9262079299572,
         17.9888028979966,
         15.3333284503293,
         19.6535308744024,
         17.1501961307627,
         0.0,
         0.0,
         0.0,
         0.0,
         0.0,
         509.0,
         497.0,
         439.0,
         427.0,
         407.0,
         1.0,
         1.0,
         1.0,
         1.0,
         1.0,
         2.0,
         23.0,
         10.0,
         58.0,
         11.0,
         20.0,
         23.3617021276596,
         23.3617021276596,
         23.3617021276596,
         23.3617021276596,
         23.3617021276596,
         23.9423076923077,
         26.3082269243683,
         23.6212606363851,
         22.6752334301282,
         27.4343583104833,
         34.0090408101173,
         11.1991944104063,
         7.33420726455092,
         8.15160392948917,
         11.4119236389594,
         17.9429092915607, …