Timeline for Suggestions for fitting an S-shaped curve with initial hook
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Mar 9, 2021 at 20:39 | comment | added | whuber♦ | Those are good points, but they ask a different question. The problem with the question in its current form is that the suggested answer could luckily work out or it could be terrible, but you haven't provided any information to allow anyone to determine which situation you're in! | |
| Mar 9, 2021 at 20:33 | comment | added | Brant Inman | (accidentally pressed enter)...As an example, if one were to change the last two values of the vector of Y listed above (that I artificially smoothed for demonstration of the model that I require) to 0.04 and 0.043, the resulting GAM predictions for subsequent values of X (eg. X > 51) would change quite a lot. | |
| Mar 9, 2021 at 20:27 | comment | added | Brant Inman | GAMs tend to be heavily influenced by the last points in the dataset. In my real dataset, the last few values of Y are random spikes which are expected to be lower in subsequent values of X that have not yet been observed, and that I am trying to predict. Y should plateau, similar to the figure that I provided which is exactly the type of curve that I would like to fit. | |
| Mar 9, 2021 at 19:52 | comment | added | whuber♦ | You don't supply enough information to provide any objective answer. The reason is that you haven't given us any indication whatsoever of how to extrapolate the data. Lacking that, there's no reason to discount a GAM (or splines or whatever) that will fit the data well. | |
| Mar 9, 2021 at 19:50 | history | edited | Brant Inman | CC BY-SA 4.0 |
Modified curve to better represent data, added data
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| Mar 8, 2021 at 12:41 | vote | accept | Brant Inman | ||
| Mar 7, 2021 at 8:07 | answer | added | JJacquelin | timeline score: 3 | |
| Mar 7, 2021 at 1:22 | history | asked | Brant Inman | CC BY-SA 4.0 |