Ancestors

Written by Achim Zeileis on 2024-09-16 at 08:02

📢 PSA: Tired of #betareg in :rstats: complaining when you have 0 and/or 1 in your response variable?

🎉 Good news: betareg can now capture this at the expense of a single extra parameter! #rstats

📄 New arXiv working paper with @ikosmidis

https://www.zeileis.org/news/xbx/

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Written by Achim Zeileis on 2024-09-16 at 08:04

💡 Idea for extended-support beta mixture (XBX) distribution:

• Extend support via 4-parameter beta from (0, 1) to (-ν, 1 + ν)

• Special cases: Beta for ν = 0 and Normal for ν → ∞

• Shrink towards beta by exponential continuous mixture for ν

• Censor outside [0, 1] to obtain point masses at 0 and 1

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Written by Achim Zeileis on 2024-09-16 at 08:05

🧭 This was a long journey of almost a decade (interrupted by a couple of kids and a pandemic).

2015: First idea and basic theory.

2017: First implementation on R-Forge, work out details.

2024: Full implementation, application, paper. 🥳

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Written by Facundo Muñoz on 2024-09-18 at 13:39

@zeileis Thanks for pointing this out!! It's comforting to see that these things take a lot of time, even to very clever people.

I get frustrated too often because I feel I should be capable of "solving" a problem or implementing a methodological idea in a few days of work.

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Toot

Written by Achim Zeileis on 2024-09-18 at 14:32

@famuvie Most of the cleverness was done by @ikosmidis almost 10 years ago. 😇

After that it was more tedious work, implementation, embellishing the application case study, and weaving everything into a coherent story for the paper. And these things just need time for thought and trying out different ideas.

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Descendants