Thanks for reply.
I have updated xgboost4j to 1.1.2 which support my scala 2.11.
But the model parameter still doesn’t contain num_pairsample as followed.
The params of best XGBoostClassification model : {
xgbr_ee7ddf2a59a6-allowNonZeroForMissing: false,
xgbr_ee7ddf2a59a6-alpha: 0.0,
xgbr_ee7ddf2a59a6-baseScore: 0.5,
xgbr_ee7ddf2a59a6-batchSize: 32768,
xgbr_ee7ddf2a59a6-cacheTrainingSet: false,
xgbr_ee7ddf2a59a6-checkpointInterval: -1,
xgbr_ee7ddf2a59a6-checkpointPath: ,
xgbr_ee7ddf2a59a6-colsampleBylevel: 1.0,
xgbr_ee7ddf2a59a6-colsampleBytree: 1.0,
xgbr_ee7ddf2a59a6-customEval: null,
xgbr_ee7ddf2a59a6-customObj: null,
xgbr_ee7ddf2a59a6-dmlcWorkerConnectRetry: 5,
xgbr_ee7ddf2a59a6-eta: 0.1,
xgbr_ee7ddf2a59a6-evalMetric: ndcg,
xgbr_ee7ddf2a59a6-featuresCol: features,
xgbr_ee7ddf2a59a6-gamma: 0.0,
xgbr_ee7ddf2a59a6-groupCol: group,
xgbr_ee7ddf2a59a6-growPolicy: depthwise,
xgbr_ee7ddf2a59a6-labelCol: label,
xgbr_ee7ddf2a59a6-lambda: 1.0,
xgbr_ee7ddf2a59a6-lambdaBias: 0.0,
xgbr_ee7ddf2a59a6-maxBin: 16,
xgbr_ee7ddf2a59a6-maxDeltaStep: 0.0,
xgbr_ee7ddf2a59a6-maxDepth: 6,
xgbr_ee7ddf2a59a6-minChildWeight: 6.0,
xgbr_ee7ddf2a59a6-missing: 0.0,
xgbr_ee7ddf2a59a6-normalizeType: tree,
xgbr_ee7ddf2a59a6-nthread: 1,
xgbr_ee7ddf2a59a6-numEarlyStoppingRounds: 0,
xgbr_ee7ddf2a59a6-numRound: 200,
xgbr_ee7ddf2a59a6-numWorkers: 1,
xgbr_ee7ddf2a59a6-objective: rank:pairwise,
xgbr_ee7ddf2a59a6-predictionCol: prediction,
xgbr_ee7ddf2a59a6-rabitRingReduceThreshold: 32768,
xgbr_ee7ddf2a59a6-rabitTimeout: -1,
xgbr_ee7ddf2a59a6-rateDrop: 0.0,
xgbr_ee7ddf2a59a6-sampleType: uniform,
xgbr_ee7ddf2a59a6-scalePosWeight: 1.0,
xgbr_ee7ddf2a59a6-seed: 0,
xgbr_ee7ddf2a59a6-silent: 0,
xgbr_ee7ddf2a59a6-sketchEps: 0.03,
xgbr_ee7ddf2a59a6-skipDrop: 0.0,
xgbr_ee7ddf2a59a6-subsample: 1.0,
xgbr_ee7ddf2a59a6-timeoutRequestWorkers: 1800000,
xgbr_ee7ddf2a59a6-trackerConf: TrackerConf(0,scala),
xgbr_ee7ddf2a59a6-trainTestRatio: 1.0,
xgbr_ee7ddf2a59a6-treeLimit: 0,
xgbr_ee7ddf2a59a6-treeMethod: auto,
xgbr_ee7ddf2a59a6-useExternalMemory: false,
xgbr_ee7ddf2a59a6-verbosity: 2,
xgbr_ee7ddf2a59a6-weightCol: weight
}
Does it mean that only xgboost4j 1.3.x support such parameter num_pairsample
?