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A

ACCEPTED_TYPES - Static variable in class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
address - Variable in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
allReduce(float[], Rabit.OpType) - Static method in class ml.dmlc.xgboost4j.java.Rabit
perform Allreduce on distributed float vectors using operator op.

B

BigDenseMatrix - Class in ml.dmlc.xgboost4j.java.util
Off-heap implementation of a Dense Matrix, matrix size is only limited by the amount of the available memory and the matrix dimension cannot exceed Integer.MAX_VALUE (this is consistent with XGBoost API restrictions on maximum length of a response).
BigDenseMatrix(int, int) - Constructor for class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
boost(DMatrix, float[], float[]) - Method in class ml.dmlc.xgboost4j.java.Booster
update with give grad and hess
Booster - Class in ml.dmlc.xgboost4j.java
Booster for xgboost, this is a model API that support interactive build of a XGBoost Model
Booster.FeatureImportanceType - Class in ml.dmlc.xgboost4j.java
Supported feature importance types WEIGHT = Number of nodes that a feature was used to determine a split GAIN = Average information gain per split for a feature COVER = Average cover per split for a feature TOTAL_GAIN = Total information gain over all splits of a feature TOTAL_COVER = Total cover over all splits of a feature

C

COVER - Static variable in class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
crossValidation(DMatrix, Map<String, Object>, int, int, String[], IObjective, IEvaluation) - Static method in class ml.dmlc.xgboost4j.java.XGBoost
Cross-validation with given parameters.

D

dispose() - Method in class ml.dmlc.xgboost4j.java.Booster
 
dispose() - Method in class ml.dmlc.xgboost4j.java.DMatrix
 
dispose() - Method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
DMatrix - Class in ml.dmlc.xgboost4j.java
DMatrix for xgboost.
DMatrix(Iterator<LabeledPoint>, String) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
Create DMatrix from iterator.
DMatrix(String) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
Create DMatrix by loading libsvm file from dataPath
DMatrix(long[], int[], float[], DMatrix.SparseType) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
Deprecated.
DMatrix(long[], int[], float[], DMatrix.SparseType, int) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
Create DMatrix from Sparse matrix in CSR/CSC format.
DMatrix(float[], int, int) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
create DMatrix from dense matrix
DMatrix(BigDenseMatrix) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
create DMatrix from a BigDenseMatrix
DMatrix(float[], int, int, float) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
create DMatrix from dense matrix
DMatrix(BigDenseMatrix, float) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
create DMatrix from dense matrix
DMatrix(long) - Constructor for class ml.dmlc.xgboost4j.java.DMatrix
used for DMatrix slice
DMatrix.SparseType - Enum in ml.dmlc.xgboost4j.java
sparse matrix type (CSR or CSC)

E

eval(float[][], DMatrix) - Method in interface ml.dmlc.xgboost4j.java.IEvaluation
evaluate with predicts and data
evalSet(DMatrix[], String[], int) - Method in class ml.dmlc.xgboost4j.java.Booster
evaluate with given dmatrixs.
evalSet(DMatrix[], String[], int, float[]) - Method in class ml.dmlc.xgboost4j.java.Booster
evaluate with given dmatrixs.
evalSet(DMatrix[], String[], IEvaluation) - Method in class ml.dmlc.xgboost4j.java.Booster
evaluate with given customized Evaluation class
evalSet(DMatrix[], String[], IEvaluation, float[]) - Method in class ml.dmlc.xgboost4j.java.Booster
 

F

FeatureImportanceType() - Constructor for class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
finalize() - Method in class ml.dmlc.xgboost4j.java.Booster
 
finalize() - Method in class ml.dmlc.xgboost4j.java.DMatrix
 

G

GAIN - Static variable in class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
get(long) - Method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
get(int, int) - Method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
getAttr(String) - Method in class ml.dmlc.xgboost4j.java.Booster
Get attribute from the Booster.
getAttrs() - Method in class ml.dmlc.xgboost4j.java.Booster
Get attributes stored in the Booster as a Map.
getBaseMargin() - Method in class ml.dmlc.xgboost4j.java.DMatrix
Get base margin of the DMatrix.
getDirect(long) - Static method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
getEnumOp() - Method in enum ml.dmlc.xgboost4j.java.Rabit.DataType
 
getFeatureScore(String[]) - Method in class ml.dmlc.xgboost4j.java.Booster
Get importance of each feature with specified feature names.
getFeatureScore(String) - Method in class ml.dmlc.xgboost4j.java.Booster
Get importance of each feature
getGradient(float[][], DMatrix) - Method in interface ml.dmlc.xgboost4j.java.IObjective
user define objective function, return gradient and second order gradient
getGroup() - Method in class ml.dmlc.xgboost4j.java.DMatrix
Get group sizes of DMatrix
getHandle() - Method in class ml.dmlc.xgboost4j.java.DMatrix
Get the handle
getHostIp() - Method in class ml.dmlc.xgboost4j.java.TrackerProperties
 
getInstance() - Static method in class ml.dmlc.xgboost4j.java.TrackerProperties
 
getLabel() - Method in class ml.dmlc.xgboost4j.java.DMatrix
get label values
getMetric() - Method in interface ml.dmlc.xgboost4j.java.IEvaluation
get evaluate metric
getModelDump(String, boolean) - Method in class ml.dmlc.xgboost4j.java.Booster
Get the dump of the model as a string array
getModelDump(String, boolean, String) - Method in class ml.dmlc.xgboost4j.java.Booster
 
getModelDump(String[], boolean) - Method in class ml.dmlc.xgboost4j.java.Booster
Get the dump of the model as a string array with specified feature names.
getModelDump(String[], boolean, String) - Method in class ml.dmlc.xgboost4j.java.Booster
 
getOperand() - Method in enum ml.dmlc.xgboost4j.java.Rabit.OpType
 
getRank() - Static method in class ml.dmlc.xgboost4j.java.Rabit
get rank of current thread.
getScore(String[], String) - Method in class ml.dmlc.xgboost4j.java.Booster
Get the feature importances for gain or cover (average or total)
getScore(String, String) - Method in class ml.dmlc.xgboost4j.java.Booster
Get the feature importances for gain or cover (average or total), with feature names
getSize() - Method in enum ml.dmlc.xgboost4j.java.Rabit.DataType
 
getStatusCode() - Method in enum ml.dmlc.xgboost4j.java.IRabitTracker.TrackerStatus
 
getVersion() - Method in class ml.dmlc.xgboost4j.java.Booster
 
getWeight() - Method in class ml.dmlc.xgboost4j.java.DMatrix
get weight of the DMatrix
getWorkerEnvs() - Method in interface ml.dmlc.xgboost4j.java.IRabitTracker
 
getWorkerEnvs() - Method in class ml.dmlc.xgboost4j.java.RabitTracker
Get environments that can be used to pass to worker.
getWorldSize() - Static method in class ml.dmlc.xgboost4j.java.Rabit
get world size of current job.

H

handle - Variable in class ml.dmlc.xgboost4j.java.DMatrix
 

I

IEvaluation - Interface in ml.dmlc.xgboost4j.java
interface for customized evaluation
init(Map<String, String>) - Static method in class ml.dmlc.xgboost4j.java.Rabit
Initialize the rabit library on current working thread.
IObjective - Interface in ml.dmlc.xgboost4j.java
interface for customize Object function
IRabitTracker - Interface in ml.dmlc.xgboost4j.java
Interface for Rabit tracker implementations with three public methods: - start(timeout): Start the Rabit tracker awaiting for worker connections, with a given timeout value (in milliseconds.) - getWorkerEnvs(): Return the environment variables needed to initialize Rabit clients.
IRabitTracker.TrackerStatus - Enum in ml.dmlc.xgboost4j.java
 

L

loadModel(String) - Static method in class ml.dmlc.xgboost4j.java.XGBoost
load model from modelPath
loadModel(InputStream) - Static method in class ml.dmlc.xgboost4j.java.XGBoost
Load a new Booster model from a file opened as input stream.

M

MAX_MATRIX_SIZE - Static variable in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
ml.dmlc.xgboost4j.java - package ml.dmlc.xgboost4j.java
 
ml.dmlc.xgboost4j.java.util - package ml.dmlc.xgboost4j.java.util
 
mockList - Static variable in class ml.dmlc.xgboost4j.java.Rabit
 

N

ncol - Variable in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
nrow - Variable in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 

P

predict(DMatrix) - Method in class ml.dmlc.xgboost4j.java.Booster
Predict with data
predict(DMatrix, boolean) - Method in class ml.dmlc.xgboost4j.java.Booster
Predict with data
predict(DMatrix, boolean, int) - Method in class ml.dmlc.xgboost4j.java.Booster
Advanced predict function with all the options.
predictContrib(DMatrix, int) - Method in class ml.dmlc.xgboost4j.java.Booster
Output feature contributions toward predictions of given data
predictLeaf(DMatrix, int) - Method in class ml.dmlc.xgboost4j.java.Booster
Predict leaf indices given the data

R

Rabit - Class in ml.dmlc.xgboost4j.java
Rabit global class for synchronization.
Rabit() - Constructor for class ml.dmlc.xgboost4j.java.Rabit
 
Rabit.DataType - Enum in ml.dmlc.xgboost4j.java
 
Rabit.OpType - Enum in ml.dmlc.xgboost4j.java
 
rabitEnvs - Static variable in class ml.dmlc.xgboost4j.java.Rabit
 
RabitTracker - Class in ml.dmlc.xgboost4j.java
Java implementation of the Rabit tracker to coordinate distributed workers.
RabitTracker(int) - Constructor for class ml.dmlc.xgboost4j.java.RabitTracker
 
read(Kryo, Input) - Method in class ml.dmlc.xgboost4j.java.Booster
 
rowNum() - Method in class ml.dmlc.xgboost4j.java.DMatrix
get the row number of DMatrix

S

saveBinary(String) - Method in class ml.dmlc.xgboost4j.java.DMatrix
save DMatrix to filePath
saveModel(String) - Method in class ml.dmlc.xgboost4j.java.Booster
Save model to modelPath
saveModel(OutputStream) - Method in class ml.dmlc.xgboost4j.java.Booster
Save the model to file opened as output stream.
set(long, float) - Method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
set(int, int, float) - Method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
setAttr(String, String) - Method in class ml.dmlc.xgboost4j.java.Booster
Set attribute to the Booster.
setAttrs(Map<String, String>) - Method in class ml.dmlc.xgboost4j.java.Booster
Set attributes to the Booster.
setBaseMargin(float[]) - Method in class ml.dmlc.xgboost4j.java.DMatrix
Set base margin (initial prediction).
setBaseMargin(float[][]) - Method in class ml.dmlc.xgboost4j.java.DMatrix
Set base margin (initial prediction).
setDirect(long, float) - Static method in class ml.dmlc.xgboost4j.java.util.BigDenseMatrix
 
setGroup(int[]) - Method in class ml.dmlc.xgboost4j.java.DMatrix
Set group sizes of DMatrix (used for ranking)
setLabel(float[]) - Method in class ml.dmlc.xgboost4j.java.DMatrix
set label of dmatrix
setParam(String, Object) - Method in class ml.dmlc.xgboost4j.java.Booster
Set parameter to the Booster.
setParams(Map<String, Object>) - Method in class ml.dmlc.xgboost4j.java.Booster
Set parameters to the Booster.
setVersion(int) - Method in class ml.dmlc.xgboost4j.java.Booster
 
setWeight(float[]) - Method in class ml.dmlc.xgboost4j.java.DMatrix
set weight of each instance
shutdown() - Static method in class ml.dmlc.xgboost4j.java.Rabit
Shutdown the rabit engine in current working thread, equals to finalize.
slice(int[]) - Method in class ml.dmlc.xgboost4j.java.DMatrix
Slice the DMatrix and return a new DMatrix that only contains `rowIndex`.
start(long) - Method in interface ml.dmlc.xgboost4j.java.IRabitTracker
 
start(long) - Method in class ml.dmlc.xgboost4j.java.RabitTracker
 
stop() - Method in interface ml.dmlc.xgboost4j.java.IRabitTracker
 
stop() - Method in class ml.dmlc.xgboost4j.java.RabitTracker
 

T

toByteArray() - Method in class ml.dmlc.xgboost4j.java.Booster
 
TOTAL_COVER - Static variable in class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
TOTAL_GAIN - Static variable in class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
trackerPrint(String) - Static method in class ml.dmlc.xgboost4j.java.Rabit
Print the message on rabit tracker.
TrackerProperties - Class in ml.dmlc.xgboost4j.java
 
train(DMatrix, Map<String, Object>, int, Map<String, DMatrix>, IObjective, IEvaluation) - Static method in class ml.dmlc.xgboost4j.java.XGBoost
Train a booster given parameters.
train(DMatrix, Map<String, Object>, int, Map<String, DMatrix>, float[][], IObjective, IEvaluation, int) - Static method in class ml.dmlc.xgboost4j.java.XGBoost
Train a booster given parameters.
train(DMatrix, Map<String, Object>, int, Map<String, DMatrix>, float[][], IObjective, IEvaluation, int, Booster) - Static method in class ml.dmlc.xgboost4j.java.XGBoost
Train a booster given parameters.

U

uncaughtException(Thread, Throwable) - Method in class ml.dmlc.xgboost4j.java.RabitTracker
 
update(DMatrix, int) - Method in class ml.dmlc.xgboost4j.java.Booster
Update the booster for one iteration.
update(DMatrix, IObjective) - Method in class ml.dmlc.xgboost4j.java.Booster
Update with customize obj func
UtilUnsafe - Class in ml.dmlc.xgboost4j.java.util
Simple class to obtain access to the Unsafe object.

V

valueOf(String) - Static method in enum ml.dmlc.xgboost4j.java.DMatrix.SparseType
Returns the enum constant of this type with the specified name.
valueOf(String) - Static method in enum ml.dmlc.xgboost4j.java.IRabitTracker.TrackerStatus
Returns the enum constant of this type with the specified name.
valueOf(String) - Static method in enum ml.dmlc.xgboost4j.java.Rabit.DataType
Returns the enum constant of this type with the specified name.
valueOf(String) - Static method in enum ml.dmlc.xgboost4j.java.Rabit.OpType
Returns the enum constant of this type with the specified name.
values() - Static method in enum ml.dmlc.xgboost4j.java.DMatrix.SparseType
Returns an array containing the constants of this enum type, in the order they are declared.
values() - Static method in enum ml.dmlc.xgboost4j.java.IRabitTracker.TrackerStatus
Returns an array containing the constants of this enum type, in the order they are declared.
values() - Static method in enum ml.dmlc.xgboost4j.java.Rabit.DataType
Returns an array containing the constants of this enum type, in the order they are declared.
values() - Static method in enum ml.dmlc.xgboost4j.java.Rabit.OpType
Returns an array containing the constants of this enum type, in the order they are declared.
versionNumber() - Static method in class ml.dmlc.xgboost4j.java.Rabit
Get version number of current stored model in the thread.

W

waitFor(long) - Method in interface ml.dmlc.xgboost4j.java.IRabitTracker
 
waitFor(long) - Method in class ml.dmlc.xgboost4j.java.RabitTracker
 
WEIGHT - Static variable in class ml.dmlc.xgboost4j.java.Booster.FeatureImportanceType
 
write(Kryo, Output) - Method in class ml.dmlc.xgboost4j.java.Booster
 

X

XGBoost - Class in ml.dmlc.xgboost4j.java
trainer for xgboost
XGBoost() - Constructor for class ml.dmlc.xgboost4j.java.XGBoost
 
XGBoostError - Exception in ml.dmlc.xgboost4j.java
custom error class for xgboost
XGBoostError(String) - Constructor for exception ml.dmlc.xgboost4j.java.XGBoostError
 
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