please add more detail to `g=0, 1, 2` descriptions for svyfgt?

[ajdamico]

in both the book and also the ?svyfgt help file?

right now, the ?svyfgt help file just says Measures with g=1 or g=2 also have a natural interpretation ..should it say something about this? i don't think "a natural interpretation" is specific enough?

could you add more detail about these three things in the book? thanks!

FGT(0): headcount ratio (proportion poor)
FGT(1): average normalised poverty gap
FGT(2): average squared normalised poverty gap

[guilhermejacob]

Actually, you can also see it in another way:

If g=0, the FGT index equals the poverty headcount ratio, which accounts for the spread of poverty. If g=1, FGT is the mean of the normalized income shortfall of the poor. By doing so, the measure takes into account both the spread and the intensity of poverty. When g=2, the relative weight of larger shortfalls increases even more, which yields a measure that accounts for poverty severity, i.e., the inequality among the poor. This way, a transfer from a poor person to an even poorer person would reduce the FGT(2).

[DjalmaPessoa]

Awesome!

Em 19 de dez de 2016, às 15:29, Guilherme Jacob notifications@github.com escreveu:

Actually, you can also see it in another way:

If g=0, the FGT index equals the poverty headcount ratio, which accounts for the spread of poverty. If g=1, FGT is the mean of the normalized income shortfall of the poor. By doing so, the measure takes into account both the spread and the intensity of poverty. When g=2, the relative weight of larger shortfalls increases even more, which yields a measure that accounts for poverty severity, i.e., the inequality among the poor. This way, a transfer from a poor person to an even poorer person would reduce the FGT(2).

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[DjalmaPessoa]

completed the documentation for g=1 and g=2 in the library. I'll see what can be done in the book

[DjalmaPessoa]

The book defines the FGT for g=0 and for g >= 1. Perhaps we can include Guilherme's explanation of 19 Dec 2016 in the book. What do you think?

[ajdamico]

fine with me..

On Mon, Feb 20, 2017 at 8:13 AM, DjalmaPessoa notifications@github.com wrote:

The book defines the FGT for g=0 and for g >= 1. Perhaps we can include Guilherme's explanation of 19 Dec 2016 in the book. What do you think?

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[ajdamico]

looks great, thank you

On Feb 21, 2017 1:29 PM, "DjalmaPessoa" notifications@github.com wrote:

Closed #200 https://github.com/DjalmaPessoa/convey/issues/200.

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