public virtual void test_recovery_normal_fixedRho()
        {
            SabrIborCapletFloorletVolatilityBootstrapDefinition definition = SabrIborCapletFloorletVolatilityBootstrapDefinition.ofFixedRho(IborCapletFloorletVolatilitiesName.of("test"), USD_LIBOR_3M, ACT_ACT_ISDA, 0.0, CurveInterpolators.LINEAR, CurveExtrapolators.FLAT, CurveExtrapolators.FLAT, SabrHaganVolatilityFunctionProvider.DEFAULT);
            RawOptionData data = RawOptionData.of(createNormalEquivMaturities(), createNormalEquivStrikes(), ValueType.STRIKE, createFullNormalEquivDataMatrix(), ValueType.NORMAL_VOLATILITY);
            IborCapletFloorletVolatilityCalibrationResult res     = CALIBRATOR.calibrate(definition, CALIBRATION_TIME, data, RATES_PROVIDER);
            SabrParametersIborCapletFloorletVolatilities  resVols = (SabrParametersIborCapletFloorletVolatilities)res.Volatilities;

            for (int i = 1; i < NUM_BLACK_STRIKES; ++i)
            {
                Pair <IList <ResolvedIborCapFloorLeg>, IList <double> > capsAndVols = getCapsNormalEquivVols(i);
                IList <ResolvedIborCapFloorLeg> caps = capsAndVols.First;
                IList <double> vols  = capsAndVols.Second;
                int            nCaps = caps.Count;
                for (int j = 0; j < nCaps; ++j)
                {
                    ConstantSurface volSurface = ConstantSurface.of(Surfaces.normalVolatilityByExpiryStrike("test", ACT_ACT_ISDA), vols[j]);
                    NormalIborCapletFloorletExpiryStrikeVolatilities constVol = NormalIborCapletFloorletExpiryStrikeVolatilities.of(USD_LIBOR_3M, CALIBRATION_TIME, volSurface);
                    double priceOrg   = LEG_PRICER_NORMAL.presentValue(caps[j], RATES_PROVIDER, constVol).Amount;
                    double priceCalib = LEG_PRICER_SABR.presentValue(caps[j], RATES_PROVIDER, resVols).Amount;
                    assertEquals(priceOrg, priceCalib, Math.Max(priceOrg, 1d) * TOL * 3d);
                }
            }
            assertTrue(res.ChiSquare > 0d);
            assertEquals(resVols.Index, USD_LIBOR_3M);
            assertEquals(resVols.Name, definition.Name);
            assertEquals(resVols.ValuationDateTime, CALIBRATION_TIME);
        }
        public virtual void recovery_test_normal2_shift()
        {
            SurfaceIborCapletFloorletVolatilityBootstrapDefinition definition = SurfaceIborCapletFloorletVolatilityBootstrapDefinition.of(IborCapletFloorletVolatilitiesName.of("test"), USD_LIBOR_3M, ACT_ACT_ISDA, LINEAR, DOUBLE_QUADRATIC, ConstantCurve.of("Black shift", 0.02));
            DoubleArray   strikes = createNormalEquivStrikes();
            RawOptionData data    = RawOptionData.of(createNormalEquivMaturities(), strikes, ValueType.STRIKE, createFullNormalEquivDataMatrix(), ValueType.NORMAL_VOLATILITY);
            IborCapletFloorletVolatilityCalibrationResult          res    = CALIBRATOR.calibrate(definition, CALIBRATION_TIME, data, RATES_PROVIDER);
            ShiftedBlackIborCapletFloorletExpiryStrikeVolatilities resVol = (ShiftedBlackIborCapletFloorletExpiryStrikeVolatilities)res.Volatilities;

            for (int i = 0; i < strikes.size(); ++i)
            {
                Pair <IList <ResolvedIborCapFloorLeg>, IList <double> > capsAndVols = getCapsNormalEquivVols(i);
                IList <ResolvedIborCapFloorLeg> caps = capsAndVols.First;
                IList <double> vols  = capsAndVols.Second;
                int            nCaps = caps.Count;
                for (int j = 0; j < nCaps; ++j)
                {
                    ConstantSurface volSurface = ConstantSurface.of(Surfaces.normalVolatilityByExpiryStrike("test", ACT_ACT_ISDA), vols[j]);
                    NormalIborCapletFloorletExpiryStrikeVolatilities constVol = NormalIborCapletFloorletExpiryStrikeVolatilities.of(USD_LIBOR_3M, CALIBRATION_TIME, volSurface);
                    double priceOrg   = LEG_PRICER_NORMAL.presentValue(caps[j], RATES_PROVIDER, constVol).Amount;
                    double priceCalib = LEG_PRICER_BLACK.presentValue(caps[j], RATES_PROVIDER, resVol).Amount;
                    assertEquals(priceOrg, priceCalib, Math.Max(priceOrg, 1d) * TOL);
                }
            }
            assertEquals(res.ChiSquare, 0d);
        }
Exemplo n.º 3
0
        public virtual void recovery_test_normal_shift_fixedRho()
        {
            double      shift   = 0.02;
            DoubleArray initial = DoubleArray.of(0.05, 0.35, 0.0, 0.9);
            SabrIborCapletFloorletVolatilityCalibrationDefinition definition = SabrIborCapletFloorletVolatilityCalibrationDefinition.ofFixedRho(NAME, USD_LIBOR_3M, ACT_ACT_ISDA, shift, ALPHA_KNOTS, BETA_RHO_KNOTS, NU_KNOTS, initial, DOUBLE_QUADRATIC, FLAT, FLAT, HAGAN);
            ImmutableList <Period> maturities = createNormalEquivMaturities();
            DoubleArray            strikes    = createNormalEquivStrikes();
            DoubleMatrix           volData    = createFullNormalEquivDataMatrix();
            DoubleMatrix           error      = DoubleMatrix.filled(volData.rowCount(), volData.columnCount(), 1.0e-3);
            RawOptionData          data       = RawOptionData.of(maturities, strikes, ValueType.STRIKE, volData, error, ValueType.NORMAL_VOLATILITY);
            IborCapletFloorletVolatilityCalibrationResult res     = CALIBRATOR.calibrate(definition, CALIBRATION_TIME, data, RATES_PROVIDER);
            SabrIborCapletFloorletVolatilities            resVols = (SabrIborCapletFloorletVolatilities)res.Volatilities;

            for (int i = 0; i < strikes.size(); ++i)
            {
                Pair <IList <ResolvedIborCapFloorLeg>, IList <double> > capsAndVols = getCapsNormalEquivVols(i);
                IList <ResolvedIborCapFloorLeg> caps = capsAndVols.First;
                IList <double> vols  = capsAndVols.Second;
                int            nCaps = caps.Count;
                for (int j = 0; j < nCaps; ++j)
                {
                    ConstantSurface volSurface = ConstantSurface.of(Surfaces.normalVolatilityByExpiryStrike("test", ACT_ACT_ISDA), vols[j]);
                    NormalIborCapletFloorletExpiryStrikeVolatilities constVol = NormalIborCapletFloorletExpiryStrikeVolatilities.of(USD_LIBOR_3M, CALIBRATION_TIME, volSurface);
                    double priceOrg   = LEG_PRICER_NORMAL.presentValue(caps[j], RATES_PROVIDER, constVol).Amount;
                    double priceCalib = LEG_PRICER_SABR.presentValue(caps[j], RATES_PROVIDER, resVols).Amount;
                    assertEquals(priceOrg, priceCalib, Math.Max(priceOrg, 1d) * TOL * 5d);
                }
            }
        }
        public virtual void recovery_test_normal1()
        {
            SurfaceIborCapletFloorletVolatilityBootstrapDefinition definition = SurfaceIborCapletFloorletVolatilityBootstrapDefinition.of(IborCapletFloorletVolatilitiesName.of("test"), USD_LIBOR_3M, ACT_ACT_ISDA, LINEAR, DOUBLE_QUADRATIC);
            DoubleArray   strikes = createNormalStrikes();
            RawOptionData data    = RawOptionData.of(createNormalMaturities(), strikes, ValueType.STRIKE, createFullNormalDataMatrix(), ValueType.NORMAL_VOLATILITY);
            IborCapletFloorletVolatilityCalibrationResult    res    = CALIBRATOR.calibrate(definition, CALIBRATION_TIME, data, RATES_PROVIDER);
            NormalIborCapletFloorletExpiryStrikeVolatilities resVol = (NormalIborCapletFloorletExpiryStrikeVolatilities)res.Volatilities;

            for (int i = 0; i < strikes.size(); ++i)
            {
                Pair <IList <ResolvedIborCapFloorLeg>, IList <double> > capsAndVols = getCapsNormalVols(i);
                IList <ResolvedIborCapFloorLeg> caps = capsAndVols.First;
                IList <double> vols  = capsAndVols.Second;
                int            nCaps = caps.Count;
                for (int j = 0; j < nCaps; ++j)
                {
                    ConstantSurface volSurface = ConstantSurface.of(Surfaces.normalVolatilityByExpiryStrike("test", ACT_ACT_ISDA), vols[j]);
                    NormalIborCapletFloorletExpiryStrikeVolatilities constVol = NormalIborCapletFloorletExpiryStrikeVolatilities.of(USD_LIBOR_3M, CALIBRATION_TIME, volSurface);
                    double priceOrg   = LEG_PRICER_NORMAL.presentValue(caps[j], RATES_PROVIDER, constVol).Amount;
                    double priceCalib = LEG_PRICER_NORMAL.presentValue(caps[j], RATES_PROVIDER, resVol).Amount;
                    assertEquals(priceOrg, priceCalib, Math.Max(priceOrg, 1d) * TOL);
                }
            }
            assertEquals(res.ChiSquare, 0d);
            assertEquals(res.ChiSquare, 0d);
            assertEquals(resVol.Index, USD_LIBOR_3M);
            assertEquals(resVol.Name, definition.Name);
            assertEquals(resVol.ValuationDateTime, CALIBRATION_TIME);
            InterpolatedNodalSurface surface = (InterpolatedNodalSurface)resVol.Surface;

            for (int i = 0; i < surface.ParameterCount; ++i)
            {
                GenericVolatilitySurfacePeriodParameterMetadata metadata = (GenericVolatilitySurfacePeriodParameterMetadata)surface.getParameterMetadata(i);
                assertEquals(metadata.Strike.Value, surface.YValues.get(i));
            }
        }