Package water.util

Interface Summary

Interface	Description
RIStream.ProgressMonitor

Class Summary

Class	Description
ArrayUtils
ArrayUtils.CopyArrayToFrame
ArrayUtils.FrameToArray
AtomicUtils
AtomicUtils.DoubleArray
AtomicUtils.FloatArray
AtomicUtils.IntArray
AtomicUtils.LongArray
ByteStreams	Several helper methods inspired by Guava library - https://github.com/google/guava/.
ChunkSummary	Simple summary of how many chunks of each type are in a Frame
CollectionUtils
Countdown	Simple countdown to encapsulate timeouts and durations.
DCTTransformer
EnumUtils	Utilities to deal with Java enums.
FileIntegrityChecker
FileUtils	File utilities.
FrameUtils
FrameUtils.CalculateWeightMeanSTD	This class will calculate the weighted mean and standard deviatioin of a target column of a data frame with the weights specified in another column.
FrameUtils.CategoricalBinaryEncoder	Helper to convert a categorical variable into a "binary" encoding format.
FrameUtils.CategoricalEigenEncoder	Helper to convert a categorical variable into the first eigenvector of the dummy-expanded matrix.
FrameUtils.CategoricalEnumLimitedEncoder	Helper to convert a categorical variable into the first eigenvector of the dummy-expanded matrix.
FrameUtils.CategoricalLabelEncoder
FrameUtils.CategoricalOneHotEncoder
FrameUtils.ExportTaskDriver
FrameUtils.MissingInserter	Helper to insert missing values into a Frame
FrameUtils.Vec2ArryTsk
FrameUtils.Vecs2ArryTsk
FrameUtils.WeightedMean
GetLogsFromNode	Get zipped log directory data from a node.
HttpResponseStatus	The response code and its description of HTTP or its derived protocols, such as RTSP and ICAP.
IcedAtomicInt	Created by tomas on 3/13/17.
IcedBitSet	BitSet - Iced, meaning cheaply serialized over the wire.
IcedDouble
IcedHashMap<K,V>	Iced / Freezable NonBlockingHashMap.
IcedHashMapBase<K,V>	Iced / Freezable NonBlockingHashMap abstract base class.
IcedHashMapGeneric<K,V>	Generalization of standard IcedHashMap (Iced NBHM wrapper) with relaxed restrictions on K/V pairs.
IcedHashMapGeneric.IcedHashMapStringObject
IcedHashMapGeneric.IcedHashMapStringString
IcedInt
IcedInt.AtomicIncrementAndGet
IcedLong
IcedSortedHashMap<K,V>	Iced / Freezable Sorted HashMap.
Java7	The following code replaces Java 7 Objects class, while Java 7 is not always available.
Java7.Objects
JCodeGen	Internal utility for pretty-printing Models as Java code
JProfile
JProfile.ProfileSummary
JSONUtils
JStack
JStackCollectorTask
JStackCollectorTask.DStackTrace
LineLimitOutputStreamWrapper	Simple OutputStream wrapper limiting number of rows outputed into a given stream.
LinuxProcFileReader	Linux /proc file reader.
Log	Log for H2O.
MarkdownBuilder	Small helper class for creating Markdown in a StringBuffer.
MathUtils
MathUtils.BasicStats	Wrapper around weighted paralell basic stats computation (mean, variance)
MathUtils.ComputeAbsDiff
MathUtils.DCT
MathUtils.SquareError
MRUtils
MRUtils.ClassDist	Compute the class distribution from a class label vector (not counting missing values) Usage 1: Label vector is categorical ------------------------------------ Vec label = ...; assert(label.isCategorical()); double[] dist = new ClassDist(label).doAll(label).dist(); Usage 2: Label vector is numerical ---------------------------------- Vec label = ...; int num_classes = ...; assert(label.isInt()); double[] dist = new ClassDist(num_classes).doAll(label).dist();
MRUtils.Dist
NetworkUtils	Utilities to support networking code.
OSUtils
Pair<X,Y>	Pair class with a clearer name than AbstractMap.SimpleEntry.
PojoUtils	POJO utilities which cover cases similar to but not the same as Apache Commons PojoUtils.
PrettyPrint
ProfileCollectorTask
ProfileCollectorTask.NodeProfile
RandomUtils
RandomUtils.H2ORandomRNG	Stock Java RNG, but force the initial seed to have no zeros in either the low 32 or high 32 bits - leading to well known really bad behavior.
RandomUtils.MersenneTwisterRNG	Random number generator based on the Mersenne Twister algorithm developed by Makoto Matsumoto and Takuji Nishimura.
RandomUtils.PCGRNG
RandomUtils.XorShiftRNG	Simple XorShiftRNG.
ReflectionUtils
RIStream
RString	A replaceable string that allows very easy and simple replacements.
SB	Tight/tiny StringBuilder wrapper.
SBPrintStream	A simple stream mimicing API of SB.
SetOfBytes	Stores an immutable set of bytes, for fast evaluation.
StringUtils	String manipulation utilities.
Tabulate	Simple Co-Occurrence based tabulation of X vs Y, where X and Y are two Vecs in a given dataset Uses histogram of given resolution in X and Y Handles numerical/categorical data and missing values Supports observation weights Fills up two double[][] arrays: _countData[xbin][ybin] contains the sum of observation weights (or 1) for co-occurrences in bins xbin/ybin _responseData[xbin][2] contains the mean value of Y and the sum of observation weights for a given bin for X
Timer	Simple Timer class.
Triple<V>	Pair class with a clearer name than AbstractMap.SimpleEntry.
TwoDimTable	Serializable 2D Table containing Strings or doubles Table can be named Columns and Rows can be named Fields can be empty
UnsafeUtils
VecUtils
VecUtils.CollectDomainFast	(Optimized for positive ints) Collect numeric domain of given Vec A map-reduce task to collect up the unique values of an integer Vec and returned as the domain for the Vec.
VecUtils.CollectDoubleDomain
VecUtils.CollectIntegerDomain	Collect numeric domain of given Vec A map-reduce task to collect up the unique values of an integer Vec and returned as the domain for the Vec.
VecUtils.DomainDedupe	Create a new categorical Vec with deduplicated domains from a categorical Vec.
VecUtils.MeanResponsePerLevelTask	Compute the mean (weighted) response per categorical level Skip NA values (those are already a separate bucket in the tree building histograms, for which this is designed)
VecUtils.ReorderTask	Reorder an integer (such as Enum storage) Vec using an int -> int mapping
WaterMeterCpuTicks
WaterMeterIo
WaterMeterIo.IoStatsEntry

Enum Summary

Enum	Description
JavaVersionUtils
MathUtils.Norm
PojoUtils.FieldNaming
RandomUtils.RNGType

Exception Summary

Exception	Description
DistributedException	Created by tomas on 3/2/16.