| package org.eclipse.stem.diseasemodels.standard.impl; |
| |
| /******************************************************************************* |
| * Copyright (c) 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| import org.eclipse.emf.common.notify.Notification; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.impl.ENotificationImpl; |
| import org.eclipse.stem.core.graph.Node; |
| import org.eclipse.stem.core.model.STEMTime; |
| import org.eclipse.stem.diseasemodels.standard.DiseaseModelLabel; |
| import org.eclipse.stem.diseasemodels.standard.DiseaseModelLabelValue; |
| import org.eclipse.stem.diseasemodels.standard.SIR; |
| import org.eclipse.stem.diseasemodels.standard.SIRLabelValue; |
| import org.eclipse.stem.diseasemodels.standard.StandardDiseaseModelLabel; |
| import org.eclipse.stem.diseasemodels.standard.StandardDiseaseModelLabelValue; |
| import org.eclipse.stem.diseasemodels.standard.StandardFactory; |
| import org.eclipse.stem.diseasemodels.standard.StandardPackage; |
| import org.eclipse.stem.interventions.StandardInterventionLabel; |
| import org.eclipse.stem.interventions.StandardInterventionLabelValue; |
| |
| /** |
| * <!-- begin-user-doc --> An implementation of the model object '<em><b>SIR</b></em>'. |
| * <!-- end-user-doc --> |
| * <p> |
| * The following features are implemented: |
| * <ul> |
| * <li>{@link org.eclipse.stem.diseasemodels.standard.impl.SIRImpl#getImmunityLossRate <em>Immunity Loss Rate</em>}</li> |
| * </ul> |
| * </p> |
| * |
| * @generated |
| */ |
| public abstract class SIRImpl extends SIImpl implements SIR { |
| /** |
| * The default value of the '{@link #getImmunityLossRate() <em>Immunity Loss Rate</em>}' attribute. |
| * <!-- begin-user-doc --> <!-- end-user-doc --> |
| * @see #getImmunityLossRate() |
| * @generated |
| * @ordered |
| */ |
| protected static final double IMMUNITY_LOSS_RATE_EDEFAULT = 0.0; |
| |
| /** |
| * The cached value of the '{@link #getImmunityLossRate() <em>Immunity Loss Rate</em>}' attribute. |
| * <!-- begin-user-doc --> <!-- end-user-doc --> |
| * @see #getImmunityLossRate() |
| * @generated |
| * @ordered |
| */ |
| protected double immunityLossRate = IMMUNITY_LOSS_RATE_EDEFAULT; |
| |
| /** |
| * <!-- begin-user-doc --> <!-- end-user-doc --> |
| * @generated |
| */ |
| protected SIRImpl() { |
| super(); |
| } |
| |
| /** |
| * @see org.eclipse.stem.diseasemodels.standard.impl.DiseaseModelImpl#createDiseaseModelLabel() |
| */ |
| @Override |
| public DiseaseModelLabel createDiseaseModelLabel(String populationIdentifier) { |
| return StandardFactory.eINSTANCE.createSIRLabel(); |
| } // createDiseaseModelLabel |
| |
| @Override |
| public DiseaseModelLabelValue createDiseaseModelLabelValue(String populationIdentifier) { |
| return StandardFactory.eINSTANCE.createSIRLabelValue(); |
| } // createDiseaseModelLabelValue |
| |
| /** |
| * @see org.eclipse.stem.diseasemodels.standard.impl.SIImpl#computeTransitions(StandardDiseaseModelLabelValue, |
| * StandardDiseaseModelLabel, long) |
| */ |
| @Override |
| public StandardDiseaseModelLabelValue computeDiseaseDeltas( |
| final STEMTime time, |
| final StandardDiseaseModelLabelValue currentState, |
| final StandardDiseaseModelLabel diseaseLabel, final long timeDelta, DiseaseModelLabelValue returnValue) { |
| final SIRLabelValue currentSIR = (SIRLabelValue) currentState; |
| |
| // Compute deaths |
| final double adjustedInfectiousMortalityRate = getAdjustedInfectiousMortalityRate(timeDelta); |
| final double diseaseDeaths = adjustedInfectiousMortalityRate |
| * currentSIR.getI(); |
| |
| // This is beta* |
| double transmissionRate = getAdjustedTransmissionRate(timeDelta); |
| |
| if(!this.isFrequencyDependent()) transmissionRate *= getTransmissionRateScaleFactor(diseaseLabel); |
| |
| // The effective Infectious population is a dimensionles number normalize by total |
| // population used in teh computation of bets*S*i where i = Ieffective/Pop. |
| // This includes a correction to the current |
| // infectious population (Ieffective) based on the conserved exchange of people (circulation) |
| // between regions. Note that this is no the "arrivals" and "departures" which are |
| // a different process. |
| final double effectiveInfectious = getNormalizedEffectiveInfectious(diseaseLabel.getNode(), diseaseLabel, currentSIR.getI(), StandardPackage.Literals.SI_LABEL_VALUE__I); |
| |
| /* |
| * Compute state transitions |
| * |
| * Regarding computing the number of transitions from Susceptible to Exposed: |
| * In a linear model the "effective" number of infectious people is just |
| * the number of infectious people In a nonlinear model we have a |
| * nonLinearity exponent that is > 1 this models the effect of immune |
| * system saturation when Susceptible people are exposed to large |
| * numbers of infectious people. then the "effective" number of |
| * infectious people is I^nonLinearity exponent to allow for either |
| * linear or nonlinear models we always calculate I^nonLinearity |
| * exponent and allow nonLinearity exponent >= 1.0 |
| */ |
| double numberOfInfectedToRecovered = getAdjustedRecoveryRate(timeDelta) |
| * currentSIR.getI(); |
| double numberOfRecoveredToSusceptible = getAdjustedImmunityLossRate(timeDelta) |
| * currentSIR.getR(); |
| // Need to checked what do do here. If non linear coefficient is not 1 and |
| // the effective infectious is negative (which is possible), what do do? |
| // Let's fall back on the linear method for now. |
| double numberOfSusceptibleToInfected = 0.0; |
| if(getNonLinearityCoefficient() != 1.0 && effectiveInfectious >= 0.0) |
| numberOfSusceptibleToInfected = transmissionRate |
| * currentSIR.getS()* Math.pow(effectiveInfectious, getNonLinearityCoefficient()); |
| else |
| numberOfSusceptibleToInfected = transmissionRate |
| * currentSIR.getS()* effectiveInfectious; |
| |
| |
| |
| // Determine delta S |
| double deltaS = numberOfRecoveredToSusceptible - numberOfSusceptibleToInfected; |
| // Determine delta I |
| double deltaI = numberOfSusceptibleToInfected- numberOfInfectedToRecovered - diseaseDeaths; |
| // Determine delta R |
| double deltaR = numberOfInfectedToRecovered - numberOfRecoveredToSusceptible; |
| |
| // If there is a control label attached to the region, we need to adjust for any interventions in effect. |
| |
| StandardInterventionLabel scl = findInterventionLabel((Node)diseaseLabel.getIdentifiable()); |
| if(scl != null) { |
| double vaccinations = ((StandardInterventionLabelValue)scl.getCurrentValue()).getVaccinations(); |
| double isolations = ((StandardInterventionLabelValue)scl.getCurrentValue()).getIsolations(); |
| vaccinations *= ((double) timeDelta / (double) getTimePeriod()); |
| isolations *= ((double) timeDelta / (double) getTimePeriod()); |
| |
| if(currentSIR.getS() < vaccinations) vaccinations = currentSIR.getS(); |
| if(currentSIR.getI() < isolations) isolations = currentSIR.getI(); |
| |
| deltaS -= vaccinations; |
| deltaR += vaccinations; |
| deltaI -= isolations; |
| deltaR += isolations; |
| } |
| |
| SIRLabelValueImpl ret = (SIRLabelValueImpl)returnValue; |
| ret.setS(deltaS); |
| ret.setI(deltaI); |
| ret.setIncidence(numberOfInfectedToRecovered); |
| ret.setR(deltaR); |
| ret.setDiseaseDeaths(diseaseDeaths); |
| return ret; |
| |
| } // computeTransitions |
| |
| /** |
| * <!-- begin-user-doc --> <!-- end-user-doc --> |
| * @generated |
| */ |
| @Override |
| protected EClass eStaticClass() { |
| return StandardPackage.Literals.SIR; |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @return |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| public double getImmunityLossRate() { |
| return immunityLossRate; |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @param newImmunityLossRate |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| public void setImmunityLossRate(double newImmunityLossRate) { |
| double oldImmunityLossRate = immunityLossRate; |
| immunityLossRate = newImmunityLossRate; |
| if (eNotificationRequired()) |
| eNotify(new ENotificationImpl(this, Notification.SET, StandardPackage.SIR__IMMUNITY_LOSS_RATE, oldImmunityLossRate, immunityLossRate)); |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @param timeDelta |
| * @return |
| * |
| * <!-- end-user-doc --> |
| * @generated NOT |
| */ |
| public double getAdjustedImmunityLossRate(long timeDelta) { |
| return getImmunityLossRate() |
| * ((double) timeDelta / (double) getTimePeriod()); |
| } // getAdjustedImmunityRate |
| |
| |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @param featureID |
| * @param resolve |
| * @param coreType |
| * @return |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| @Override |
| public Object eGet(int featureID, boolean resolve, boolean coreType) { |
| switch (featureID) { |
| case StandardPackage.SIR__IMMUNITY_LOSS_RATE: |
| return getImmunityLossRate(); |
| } |
| return super.eGet(featureID, resolve, coreType); |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @param featureID |
| * @param newValue |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| @Override |
| public void eSet(int featureID, Object newValue) { |
| switch (featureID) { |
| case StandardPackage.SIR__IMMUNITY_LOSS_RATE: |
| setImmunityLossRate((Double)newValue); |
| return; |
| } |
| super.eSet(featureID, newValue); |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @param featureID |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| @Override |
| public void eUnset(int featureID) { |
| switch (featureID) { |
| case StandardPackage.SIR__IMMUNITY_LOSS_RATE: |
| setImmunityLossRate(IMMUNITY_LOSS_RATE_EDEFAULT); |
| return; |
| } |
| super.eUnset(featureID); |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @param featureID |
| * @return |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| @Override |
| public boolean eIsSet(int featureID) { |
| switch (featureID) { |
| case StandardPackage.SIR__IMMUNITY_LOSS_RATE: |
| return immunityLossRate != IMMUNITY_LOSS_RATE_EDEFAULT; |
| } |
| return super.eIsSet(featureID); |
| } |
| |
| /** |
| * <!-- begin-user-doc --> |
| * |
| * @return |
| * |
| * <!-- end-user-doc --> |
| * @generated |
| */ |
| @Override |
| public String toString() { |
| if (eIsProxy()) return super.toString(); |
| |
| StringBuffer result = new StringBuffer(super.toString()); |
| result.append(" (immunityLossRate: "); //$NON-NLS-1$ |
| result.append(immunityLossRate); |
| result.append(')'); |
| return result.toString(); |
| } |
| |
| /** |
| * @see org.eclipse.stem.diseasemodels.standard.impl.SIImpl#sane() |
| */ |
| @Override |
| public boolean sane() { |
| boolean retValue = super.sane(); |
| |
| retValue = retValue && getImmunityLossRate() >= IMMUNITY_LOSS_RATE_EDEFAULT; |
| assert retValue; |
| |
| retValue = retValue && !Double.isInfinite(getImmunityLossRate()); |
| assert retValue; |
| |
| retValue = retValue && !Double.isNaN(getImmunityLossRate()); |
| assert retValue; |
| |
| return retValue; |
| } // sane |
| |
| } // SIRImpl |