Package jline.solvers.mam.handlers

Class Solver_mam_ldqbd_statevec

java.lang.Object

jline.solvers.mam.handlers.Solver_mam_ldqbd_statevec

public final class Solver_mam_ldqbd_statevec
extends Object

LD-QBD block construction, flattening and metric mapping.

Mirrors matlab/src/solvers/MAM/solver_mam_ldqbd.m (block construction and the ld struct), solver_mam_ldqbd_flatten.m and solver_mam_ldqbd_avg.m. Handles single-class Delay+Queue (closed) or Source+Queue (open) models, with exact M/M/c boundary, PH service at any number of servers (the busy-server phase multiset of LdqbdMphc), and load-dependent scaling. The open regime truncates the level space (options.cutoff or a negligible-tail bound).

This is the CANONICAL builder for both consumers: the steady-state Solver_mam_ldqbd solver and the SolverENV state-vector analyzer's MAM backend. Keeping one construction is what stops the two from drifting -- the steady-state path carried its own copy until 2026-08-18 and silently ignored sn.lldscaling and the open regime as a result.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Solver_mam_ldqbd_statevec.Avg	Per-(station,class) mean metrics derived from a flat LD-QBD distribution.
static final class	Solver_mam_ldqbd_statevec.Flat	Flattened generator together with the queue level of each flat state.
static final class	Solver_mam_ldqbd_statevec.Ld	Block-tridiagonal LD-QBD representation plus the parameters the avg mapping needs.

Method Summary

Modifier and Type	Method	Description
static Solver_mam_ldqbd_statevec.Avg	solver_mam_ldqbd_avg(Solver_mam_ldqbd_statevec.Ld ld, Matrix piflat, int[] levelOf)	Map a flat LD-QBD distribution to per-(station,class) mean metrics.
static Solver_mam_ldqbd_statevec.Flat	solver_mam_ldqbd_flatten(Solver_mam_ldqbd_statevec.Ld ld)	Assemble a dense generator from the block-tridiagonal LD-QBD representation.
static Solver_mam_ldqbd_statevec.Ld	solver_mam_ldqbd_ld(NetworkStruct sn, SolverOptions options)	Build the LD-QBD blocks and parameters (the ld struct) for a single-class Delay/Queue (closed) or Source/Queue (open) model.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

solver_mam_ldqbd_ld

public static Solver_mam_ldqbd_statevec.Ld solver_mam_ldqbd_ld(NetworkStruct sn,
 SolverOptions options)

Build the LD-QBD blocks and parameters (the ld struct) for a single-class Delay/Queue (closed) or Source/Queue (open) model.

solver_mam_ldqbd_flatten

public static Solver_mam_ldqbd_statevec.Flat solver_mam_ldqbd_flatten(Solver_mam_ldqbd_statevec.Ld ld)

Assemble a dense generator from the block-tridiagonal LD-QBD representation.

solver_mam_ldqbd_avg

public static Solver_mam_ldqbd_statevec.Avg solver_mam_ldqbd_avg(Solver_mam_ldqbd_statevec.Ld ld,
 Matrix piflat,
 int[] levelOf)

Map a flat LD-QBD distribution to per-(station,class) mean metrics.