class LBFGSB extends FirstOrderMinimizer[DenseVector[Double], DiffFunction[DenseVector[Double]]] with SerializableLogging
This algorithm is refered the paper "A LIMITED MEMOR Y ALGORITHM F OR BOUND CONSTRAINED OPTIMIZA TION" written by Richard H.Byrd Peihuang Lu Jorge Nocedal and Ciyou Zhu Created by fanming.chen on 2015/3/7 0007. If StrongWolfeLineSearch(maxZoomIter,maxLineSearchIter) is small, the wolfeRuleSearch.minimize may throw FirstOrderException, it should increase the two variables to appropriate value
Linear Supertypes
Ordering
- Alphabetic
- By Inheritance
Inherited
- LBFGSB
- FirstOrderMinimizer
- SerializableLogging
- Serializable
- Minimizer
- AnyRef
- Any
- Hide All
- Show All
Visibility
- Public
- Protected
Instance Constructors
- new LBFGSB(lowerBounds: DenseVector[Double], upperBounds: DenseVector[Double], maxIter: Int = 100, m: Int = 5, tolerance: Double = 1E-8, maxZoomIter: Int = 64, maxLineSearchIter: Int = 64)
Type Members
- case class History(theta: Double, W: DenseMatrix[Double], M: DenseMatrix[Double], yHistory: DenseMatrix[Double], sHistory: DenseMatrix[Double]) extends Product with Serializable
- W
[Yk theta * Sk]
- type State = FirstOrderMinimizer.State[DenseVector[Double], Info, History]
- Definition Classes
- FirstOrderMinimizer
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- val EPS: Double
- Attributes
- protected
- def adjust(newX: DenseVector[Double], newGrad: DenseVector[Double], newVal: Double): (Double, DenseVector[Double])
- Attributes
- protected
- Definition Classes
- FirstOrderMinimizer
- def adjustFunction(f: DiffFunction[DenseVector[Double]]): DiffFunction[DenseVector[Double]]
- Attributes
- protected
- Definition Classes
- FirstOrderMinimizer
- def adjustWithinBound(point: DenseVector[Double]): Unit
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def calculateObjective(f: DiffFunction[DenseVector[Double]], x: DenseVector[Double], history: History): (Double, DenseVector[Double])
- Attributes
- protected
- Definition Classes
- FirstOrderMinimizer
- def chooseDescentDirection(state: State, f: DiffFunction[DenseVector[Double]]): DenseVector[Double]
- Attributes
- protected
- Definition Classes
- LBFGSB → FirstOrderMinimizer
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @IntrinsicCandidate()
- val convergenceCheck: ConvergenceCheck[DenseVector[Double]]
- Definition Classes
- FirstOrderMinimizer
- def determineStepSize(state: State, f: DiffFunction[DenseVector[Double]], direction: DenseVector[Double]): Double
- Attributes
- protected
- Definition Classes
- LBFGSB → FirstOrderMinimizer
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def findAlpha(xCauchy: DenseVector[Double], du: Vector[Double], freeVarIndex: Array[Int]): Double
- xCauchy
generalize cauchy point
- du
gradient directiong
- returns
starAlpha = max{a : a <= 1 and l_i-xc_i <= a*d_i <= u_i-xc_i}
- Attributes
- protected
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @IntrinsicCandidate()
- def getGeneralizedCauchyPoint(history: History, x: DenseVector[Double], g: DenseVector[Double]): (DenseVector[Double], DenseVector[Double])
- Attributes
- protected
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @IntrinsicCandidate()
- def infiniteIterations(f: DiffFunction[DenseVector[Double]], state: State): Iterator[State]
- Definition Classes
- FirstOrderMinimizer
- def initialHistory(f: DiffFunction[DenseVector[Double]], init: DenseVector[Double]): History
- Attributes
- protected
- Definition Classes
- LBFGSB → FirstOrderMinimizer
- def initialState(f: DiffFunction[DenseVector[Double]], init: DenseVector[Double]): State
- Attributes
- protected
- Definition Classes
- FirstOrderMinimizer
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- def iterations(f: DiffFunction[DenseVector[Double]], init: DenseVector[Double]): Iterator[State]
- Definition Classes
- FirstOrderMinimizer
- def logger: LazyLogger
- Attributes
- protected
- Definition Classes
- SerializableLogging
- def minimize(f: DiffFunction[DenseVector[Double]], init: DenseVector[Double]): DenseVector[Double]
- Definition Classes
- FirstOrderMinimizer → Minimizer
- def minimizeAndReturnState(f: DiffFunction[DenseVector[Double]], init: DenseVector[Double]): State
- Definition Classes
- FirstOrderMinimizer
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @IntrinsicCandidate()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @IntrinsicCandidate()
- def subspaceMinimization(history: History, xCauchy: DenseVector[Double], x: DenseVector[Double], c: DenseVector[Double], g: DenseVector[Double]): DenseVector[Double]
- Attributes
- protected
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def takeStep(state: State, dir: DenseVector[Double], stepSize: Double): DenseVector[Double]
- Attributes
- protected
- Definition Classes
- LBFGSB → FirstOrderMinimizer
- def toString(): String
- Definition Classes
- AnyRef → Any
- def updateHistory(newX: DenseVector[Double], newGrad: DenseVector[Double], newVal: Double, f: DiffFunction[DenseVector[Double]], oldState: State): History
- Attributes
- protected
- Definition Classes
- LBFGSB → FirstOrderMinimizer
- def updateSkYkHessianApproxMat(history: History, newS: DenseVector[Double], newY: DenseVector[Double]): History
- Attributes
- protected
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])