Description Usage Arguments Value
Convert vector of predictions to matrix format From line 56 at https://github.com/dmlc/xgboost/blob/ef4dcce7372dbc03b5066a614727f2a6dfcbd3bc/src/objective/multiclass_obj.cc, it appears that preds is stored in column-major order with observations in columns and classes/models in rows i.e., preds[k * nclass + i] is prediction for model i at index k
1 | preds_to_matrix(preds, num_models)
|
preds |
vector of predictions as obtained from xgb.train |
number |
of models |
preds in matrix form, with num_models columns and num_obs rows
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