Compute link ratios for developmentTriangle object

example

## Examples

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Calculate the link ratios (age-to-age factors) for a developmentTriangle object containing simulated insurance claims data.

ans=8×4 table
OriginYear    DevelopmentYear    ReportedClaims    PaidClaims
__________    _______________    ______________    __________

2010             12               3995.7          1893.9
2010             24                 4635          3371.2
2010             36               4866.8          4079.1
2010             48               4964.1            4487
2010             60               5013.7          4711.4
2010             72               5038.8          4805.6
2010             84                 5059          4853.7
2010             96               5074.1          4877.9

Use developmentTriangle to convert the data to a development triangle, which is the standard form for representing claims data.

dT = developmentTriangle(data)
dT =
developmentTriangle with properties:

Origin: {10x1 cell}
Development: {10x1 cell}
Claims: [10x10 double]
LatestDiagonal: [10x1 double]
Description: ""
TailFactor: 1
CumulativeDevelopmentFactors: [1.3069 1.1107 1.0516 1.0261 1.0152 ... ]
SelectedLinkRatio: [1.1767 1.0563 1.0249 1.0107 1.0054 ... ]

Use the linkRatios function to calculate link ratios between the current development period and the next period.

12-24    24-36    36-48    48-60    60-72    72-84    84-96    96-108    108-120
_____    _____    _____    _____    _____    _____    _____    ______    _______

2010    1.16     1.05      1.02     1.01    1.005    1.004    1.003    1.002      1.001
2011    1.18     1.06      1.02     1.01    1.005    1.003    1.003    1.002        NaN
2012     1.2     1.06     1.027    1.009    1.005    1.004    1.003      NaN        NaN
2013    1.19     1.06     1.026    1.014    1.007    1.004      NaN      NaN        NaN
2014    1.18     1.06     1.028    1.011    1.005      NaN      NaN      NaN        NaN
2015    1.17     1.05     1.027     1.01      NaN      NaN      NaN      NaN        NaN
2016    1.16     1.05     1.026      NaN      NaN      NaN      NaN      NaN        NaN
2017    1.18     1.06       NaN      NaN      NaN      NaN      NaN      NaN        NaN
2018    1.17      NaN       NaN      NaN      NaN      NaN      NaN      NaN        NaN
2019     NaN      NaN       NaN      NaN      NaN      NaN      NaN      NaN        NaN

## Input Arguments

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Development triangle, specified as a previously created developmentTriangle object.

Data Types: object

## Output Arguments

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Link ratios, returned as a table.