/// <summary> /// Computes bucketed CS01 for CDS. /// <para> /// The relevant credit curve must be stored in {@code RatesProvider}. /// /// </para> /// </summary> /// <param name="trade"> the trade </param> /// <param name="bucketCds"> the CDS bucket </param> /// <param name="ratesProvider"> the rates provider </param> /// <param name="refData"> the reference data </param> /// <returns> the bucketed CS01 </returns> public virtual CurrencyParameterSensitivity bucketedCs01(ResolvedCdsTrade trade, IList <ResolvedCdsTrade> bucketCds, CreditRatesProvider ratesProvider, ReferenceData refData) { //JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter: IList <ResolvedTradeParameterMetadata> metadata = bucketCds.Select(t => ResolvedTradeParameterMetadata.of(t, t.Product.ProtectionEndDate.ToString())).collect(Guavate.toImmutableList()); return(bucketedCs01(trade, bucketCds, metadata, ratesProvider, refData)); }
public virtual void test_consistency_singleName() { IsdaCreditCurveDefinition curveDefinition = IsdaCreditCurveDefinition.of(CURVE_NAME, EUR, VALUATION_DATE, ACT_365F, CURVE_NODES_PS, true, true); LegalEntitySurvivalProbabilities creditCurveComputed = CALIBRATOR.calibrate(curveDefinition, MARKET_DATA_PS, RATES_PROVIDER, REF_DATA); NodalCurve curveComputed = (NodalCurve)creditCurveComputed.SurvivalProbabilities.findData(CURVE_NAME).get(); double computedIndex = curveComputed.Metadata.getInfo(CurveInfoType.CDS_INDEX_FACTOR); assertEquals(computedIndex, 93.0 / 97.0, TOL); IsdaCompliantCreditCurveCalibrator cdsCalibrator = FastCreditCurveCalibrator.standard(); IList <CdsIsdaCreditCurveNode> cdsNodes = new List <CdsIsdaCreditCurveNode>(); for (int i = 0; i < CURVE_NODES_PS.size(); ++i) { cdsNodes.Add(CdsIsdaCreditCurveNode.ofParSpread(CURVE_NODES_PS.get(i).Template, CURVE_NODES_PS.get(i).ObservableId, CURVE_NODES_PS.get(i).CdsIndexId)); ParameterMetadata metadata = curveComputed.getParameterMetadata(i); assertTrue(metadata is ResolvedTradeParameterMetadata); ResolvedTradeParameterMetadata tradeMetadata = (ResolvedTradeParameterMetadata)metadata; assertTrue(tradeMetadata.Trade is ResolvedCdsIndexTrade); } IsdaCreditCurveDefinition cdsCurveDefinition = IsdaCreditCurveDefinition.of(CURVE_NAME, EUR, VALUATION_DATE, ACT_365F, cdsNodes, true, false); LegalEntitySurvivalProbabilities creditCurveExpected = cdsCalibrator.calibrate(cdsCurveDefinition, MARKET_DATA_PS, RATES_PROVIDER, REF_DATA); NodalCurve curveExpected = (NodalCurve)creditCurveExpected.SurvivalProbabilities.findData(CURVE_NAME).get(); assertTrue(DoubleArrayMath.fuzzyEquals(curveComputed.XValues.toArray(), curveExpected.XValues.toArray(), TOL)); assertTrue(DoubleArrayMath.fuzzyEquals(curveComputed.YValues.toArray(), curveExpected.YValues.toArray(), TOL)); assertEquals(curveComputed.Metadata.getInfo(CurveInfoType.JACOBIAN), curveExpected.Metadata.getInfo(CurveInfoType.JACOBIAN)); }
public virtual void parSpreadTest() { LocalDate valuationDate = LocalDate.of(2013, 2, 27); DoubleArray ycTime = DoubleArray.ofUnsafe(new double[] { 0.09041095890410959, 0.1726027397260274, 0.26301369863013696, 0.5123287671232877, 0.7616438356164383, 1.010958904109589, 2.008219178082192, 3.008219178082192, 4.008219178082192, 5.008219178082192, 6.008219178082192, 7.013698630136987, 8.01095890410959, 9.01095890410959, 10.01095890410959, 12.01917808219178, 15.016438356164384, 20.01917808219178, 25.021917808219175, 30.027397260273972 }); DoubleArray ycRate = DoubleArray.ofUnsafe(new double[] { 0.0020651105531615476, 0.0024506037920717797, 0.0028872269869485313, 0.004599628230463427, 0.006160809466806469, 0.0075703969168129295, 0.003965128877560435, 0.005059104202201957, 0.0069669135253734825, 0.009361825469323602, 0.011916895611422482, 0.014311922779901886, 0.016519187063048578, 0.018512121993907647, 0.020289623737560873, 0.02329885162861984, 0.026399509889410745, 0.029087919732133784, 0.03037740056662963, 0.03110021763406523 }); IsdaCreditDiscountFactors yc = IsdaCreditDiscountFactors.of(EUR, valuationDate, CurveName.of("yc_usd"), ycTime, ycRate, ACT_365F); double[] timeNodeExp = new double[] { 0.5616438356164384, 1.0575342465753426, 2.0575342465753423, 3.0602739726027397, 4.06027397260274, 5.06027397260274, 6.06027397260274, 7.063013698630137, 8.063013698630137, 9.063013698630137, 10.063013698630137 }; double[] rateNodeExp = new double[] { 0.00876054089781935, 0.011037345646850688, 0.015955126945240167, 0.020617953392829177, 0.025787811343896218, 0.030329992053915133, 0.03313419899444371, 0.03528129159875671, 0.03675340516560903, 0.037946169956317416, 0.038951101800190346 }; double[] rateNodeExpMf = new double[] { 0.008754510260229803, 0.011030502992814844, 0.01594817866773906, 0.02060947097554756, 0.025776720596175737, 0.030316032527460755, 0.03311839631615255, 0.03526404051997617, 0.03673513322394772, 0.03792689865945585, 0.03893107891569398 }; ImmutableCreditRatesProvider ratesProvider = ImmutableCreditRatesProvider.builder().valuationDate(valuationDate).discountCurves(ImmutableMap.of(EUR, yc)).recoveryRateCurves(ImmutableMap.of(LEGAL_ENTITY, ConstantRecoveryRates.of(LEGAL_ENTITY, valuationDate, 0.25))).creditCurves(ImmutableMap.of()).build(); LocalDate startDate = LocalDate.of(2012, 12, 20); LocalDate[] pillarDates = new LocalDate[] { LocalDate.of(2013, 9, 20), LocalDate.of(2014, 3, 20), LocalDate.of(2015, 3, 20), LocalDate.of(2016, 3, 20), LocalDate.of(2017, 3, 20), LocalDate.of(2018, 3, 20), LocalDate.of(2019, 3, 20), LocalDate.of(2020, 3, 20), LocalDate.of(2021, 3, 20), LocalDate.of(2022, 3, 20), LocalDate.of(2023, 3, 20) }; int nPillars = pillarDates.Length; ImmutableMarketDataBuilder builderCredit = ImmutableMarketData.builder(valuationDate); IList <CdsIsdaCreditCurveNode> nodes = new List <CdsIsdaCreditCurveNode>(nPillars); double[] quotes = new double[] { 0.006485, 0.008163, 0.011763, 0.015136, 0.018787, 0.021905, 0.023797, 0.025211, 0.02617, 0.026928, 0.027549 }; for (int i = 0; i < nPillars; ++i) { CdsConvention conv = ImmutableCdsConvention.of("conv", EUR, ACT_360, Frequency.P3M, BUS_ADJ, CDS_SETTLE_STD); CdsTemplate temp = DatesCdsTemplate.of(startDate, pillarDates[i], conv); QuoteId id = QuoteId.of(StandardId.of("OG", pillarDates[i].ToString())); nodes.Add(CdsIsdaCreditCurveNode.ofParSpread(temp, id, LEGAL_ENTITY)); builderCredit.addValue(id, quotes[i]); } ImmutableMarketData marketData = builderCredit.build(); IsdaCreditCurveDefinition curveDefinition = IsdaCreditCurveDefinition.of(CurveName.of("zz"), EUR, valuationDate, ACT_365F, nodes, true, true); LegalEntitySurvivalProbabilities cc = BUILDER_ISDA.calibrate(curveDefinition, marketData, ratesProvider, REF_DATA); NodalCurve resCurve = ((IsdaCreditDiscountFactors)cc.SurvivalProbabilities).Curve; for (int i = 0; i < nPillars; ++i) { ParameterMetadata param = resCurve.getParameterMetadata(i); assertTrue(param is ResolvedTradeParameterMetadata); ResolvedTradeParameterMetadata tradeParam = (ResolvedTradeParameterMetadata)param; assertTrue(tradeParam.Trade is ResolvedCdsTrade); } assertTrue(DoubleArrayMath.fuzzyEquals(resCurve.XValues.toArray(), timeNodeExp, TOL)); assertTrue(DoubleArrayMath.fuzzyEquals(resCurve.YValues.toArray(), rateNodeExp, TOL)); testJacobian(BUILDER_ISDA, cc, ratesProvider, nodes, quotes, 1d, EPS); LegalEntitySurvivalProbabilities ccMf = BUILDER_MARKIT.calibrate(curveDefinition, marketData, ratesProvider, REF_DATA); NodalCurve resCurveMf = ((IsdaCreditDiscountFactors)ccMf.SurvivalProbabilities).Curve; assertTrue(DoubleArrayMath.fuzzyEquals(resCurveMf.XValues.toArray(), timeNodeExp, TOL)); assertTrue(DoubleArrayMath.fuzzyEquals(resCurveMf.YValues.toArray(), rateNodeExpMf, TOL)); testJacobian(BUILDER_MARKIT, ccMf, ratesProvider, nodes, quotes, 1d, EPS); }
// extract CDS index trades from credit curve private ImmutableList <ResolvedCdsIndexTrade> getBucketCdsIndex(ResolvedCdsIndex product, CreditRatesProvider ratesProvider) { CreditDiscountFactors creditCurve = ratesProvider.survivalProbabilities(product.CdsIndexId, product.Currency).SurvivalProbabilities; int nNodes = creditCurve.ParameterCount; ImmutableList.Builder <ResolvedCdsIndexTrade> builder = ImmutableList.builder(); for (int i = 0; i < nNodes; ++i) { ParameterMetadata metadata = creditCurve.getParameterMetadata(i); ArgChecker.isTrue(metadata is ResolvedTradeParameterMetadata, "ParameterMetadata of credit curve must be ResolvedTradeParameterMetadata"); ResolvedTradeParameterMetadata tradeMetadata = (ResolvedTradeParameterMetadata)metadata; ResolvedTrade trade = tradeMetadata.Trade; ArgChecker.isTrue(trade is ResolvedCdsIndexTrade, "ResolvedTrade must be ResolvedCdsIndexTrade"); builder.add((ResolvedCdsIndexTrade)trade); } return(builder.build()); }
/// <summary> /// Computes bucketed CS01 for CDS index using a single credit curve. /// <para> /// This is coherent to the pricer <seealso cref="IsdaHomogenousCdsIndexTradePricer"/>. /// The relevant credit curve must be stored in {@code RatesProvider}. /// /// </para> /// </summary> /// <param name="trade"> the trade </param> /// <param name="bucketCdsIndex"> the CDS index bucket </param> /// <param name="ratesProvider"> the rates provider </param> /// <param name="refData"> the reference data </param> /// <returns> the bucketed CS01 </returns> public virtual CurrencyParameterSensitivity bucketedCs01(ResolvedCdsIndexTrade trade, IList <ResolvedCdsIndexTrade> bucketCdsIndex, CreditRatesProvider ratesProvider, ReferenceData refData) { ResolvedCdsTrade cdsTrade = trade.toSingleNameCds(); //JAVA TO C# CONVERTER TODO TASK: Method reference arbitrary object instance method syntax is not converted by Java to C# Converter: IList <ResolvedCdsTrade> bucketCds = bucketCdsIndex.Select(ResolvedCdsIndexTrade::toSingleNameCds).ToList(); //JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter: IList <ResolvedTradeParameterMetadata> metadata = bucketCdsIndex.Select(t => ResolvedTradeParameterMetadata.of(t, t.Product.ProtectionEndDate.ToString())).collect(Guavate.toImmutableList()); CurrencyParameterSensitivity bucketedCs01 = this.bucketedCs01(cdsTrade, bucketCds, metadata, ratesProvider, refData); double indexFactor = getIndexFactor(cdsTrade.Product, ratesProvider); return(bucketedCs01.multipliedBy(indexFactor)); }
internal virtual LegalEntitySurvivalProbabilities calibrate(IList <CdsIsdaCreditCurveNode> curveNodes, CurveName name, MarketData marketData, ImmutableCreditRatesProvider ratesProvider, DayCount definitionDayCount, Currency definitionCurrency, bool computeJacobian, bool storeTrade, ReferenceData refData) { //JAVA TO C# CONVERTER TODO TASK: Method reference arbitrary object instance method syntax is not converted by Java to C# Converter: //JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter: IEnumerator <StandardId> legalEntities = curveNodes.Select(CdsIsdaCreditCurveNode::getLegalEntityId).collect(Collectors.toSet()).GetEnumerator(); //JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops: StandardId legalEntityId = legalEntities.next(); //JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops: ArgChecker.isFalse(legalEntities.hasNext(), "legal entity must be common to curve nodes"); //JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter: IEnumerator <Currency> currencies = curveNodes.Select(n => n.Template.Convention.Currency).collect(Collectors.toSet()).GetEnumerator(); //JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops: Currency currency = currencies.next(); //JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops: ArgChecker.isFalse(currencies.hasNext(), "currency must be common to curve nodes"); ArgChecker.isTrue(definitionCurrency.Equals(currency), "curve definition currency must be the same as the currency of CDS"); //JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter: IEnumerator <CdsQuoteConvention> quoteConventions = curveNodes.Select(n => n.QuoteConvention).collect(Collectors.toSet()).GetEnumerator(); //JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops: CdsQuoteConvention quoteConvention = quoteConventions.next(); //JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops: ArgChecker.isFalse(quoteConventions.hasNext(), "quote convention must be common to curve nodes"); LocalDate valuationDate = marketData.ValuationDate; ArgChecker.isTrue(valuationDate.Equals(marketData.ValuationDate), "ratesProvider and marketDate must be based on the same valuation date"); CreditDiscountFactors discountFactors = ratesProvider.discountFactors(currency); ArgChecker.isTrue(definitionDayCount.Equals(discountFactors.DayCount), "credit curve and discount curve must be based on the same day count convention"); RecoveryRates recoveryRates = ratesProvider.recoveryRates(legalEntityId); int nNodes = curveNodes.Count; double[] coupons = new double[nNodes]; double[] pufs = new double[nNodes]; //JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java: //ORIGINAL LINE: double[][] diag = new double[nNodes][nNodes]; double[][] diag = RectangularArrays.ReturnRectangularDoubleArray(nNodes, nNodes); ImmutableList.Builder <ResolvedCdsTrade> tradesBuilder = ImmutableList.builder(); for (int i = 0; i < nNodes; i++) { CdsCalibrationTrade tradeCalibration = curveNodes[i].trade(1d, marketData, refData); ResolvedCdsTrade trade = tradeCalibration.UnderlyingTrade.resolve(refData); tradesBuilder.add(trade); double[] temp = getStandardQuoteForm(trade, tradeCalibration.Quote, valuationDate, discountFactors, recoveryRates, computeJacobian, refData); coupons[i] = temp[0]; pufs[i] = temp[1]; diag[i][i] = temp[2]; } ImmutableList <ResolvedCdsTrade> trades = tradesBuilder.build(); NodalCurve nodalCurve = calibrate(trades, DoubleArray.ofUnsafe(coupons), DoubleArray.ofUnsafe(pufs), name, valuationDate, discountFactors, recoveryRates, refData); if (computeJacobian) { LegalEntitySurvivalProbabilities creditCurve = LegalEntitySurvivalProbabilities.of(legalEntityId, IsdaCreditDiscountFactors.of(currency, valuationDate, nodalCurve)); ImmutableCreditRatesProvider ratesProviderNew = ratesProvider.toBuilder().creditCurves(ImmutableMap.of(Pair.of(legalEntityId, currency), creditCurve)).build(); System.Func <ResolvedCdsTrade, DoubleArray> sensiFunc = quoteConvention.Equals(CdsQuoteConvention.PAR_SPREAD) ? getParSpreadSensitivityFunction(ratesProviderNew, name, currency, refData) : getPointsUpfrontSensitivityFunction(ratesProviderNew, name, currency, refData); DoubleMatrix sensi = DoubleMatrix.ofArrayObjects(nNodes, nNodes, i => sensiFunc(trades.get(i))); sensi = (DoubleMatrix)MATRIX_ALGEBRA.multiply(DoubleMatrix.ofUnsafe(diag), sensi); JacobianCalibrationMatrix jacobian = JacobianCalibrationMatrix.of(ImmutableList.of(CurveParameterSize.of(name, nNodes)), MATRIX_ALGEBRA.getInverse(sensi)); nodalCurve = nodalCurve.withMetadata(nodalCurve.Metadata.withInfo(CurveInfoType.JACOBIAN, jacobian)); } ImmutableList <ParameterMetadata> parameterMetadata; if (storeTrade) { parameterMetadata = IntStream.range(0, nNodes).mapToObj(n => ResolvedTradeParameterMetadata.of(trades.get(n), curveNodes[n].Label)).collect(Guavate.toImmutableList()); } else { parameterMetadata = IntStream.range(0, nNodes).mapToObj(n => curveNodes[n].metadata(trades.get(n).Product.ProtectionEndDate)).collect(Guavate.toImmutableList()); } nodalCurve = nodalCurve.withMetadata(nodalCurve.Metadata.withParameterMetadata(parameterMetadata)); return(LegalEntitySurvivalProbabilities.of(legalEntityId, IsdaCreditDiscountFactors.of(currency, valuationDate, nodalCurve))); }