pomp | R package for statistical inference
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kandi X-RAY | pomp Summary
R package for statistical inference using partially observed Markov processes
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QUESTION
As an intern, I have to scrape the price of a product sheet on a site. But the div contains multiple spans with prices and only one contains the actual price that is displayed. Their absolute left position changes with each refresh. So when I do something like
$productPrice $packtPageXpath->query('//div[@class="bloc_price"]'); if ($productPrice->length > 0) { $productSheet['name'] = $productPrice->item(0)->nodeValue;
this returns me the list of all the prices in a different order at each refresh in the array
Here is an example of a product sheet https://www.pompes-direct.com/pompage/pompe-electrique/surface/jet/jet-102-t/4432.html
...ANSWER
Answered 2021-Apr-24 at 02:59The sensible thing to do is to extract the left position from the appropriate div
elements in //div[@id="top_produit"]//div[@class="bloc_price"]/div
by getting the value between "left:" and "px;" in the style
attributes, comparing all the values in PHP, and using the div with the lowest value.
The less sensible thing to do is assume that they'll never have a real position of 100 or greater or a fake position lower than 100, conclude that since the style
attributes are otherwise identical one must be shorter than all the others, and write an xpath to find that one.
//div[@id="top_produit"]//div[@class="bloc_price"]/div[(string-length(@style) =81)]/span[not(contains(@style, "text-decoration:line-through"))]
Might work!
QUESTION
Simulating an SIR model in R. I have a data set I am trying to plot accurately with the model. I am right now using the particle filter function, then would like to use the corresponding logLik method on the result. When I do this, I get "[1] -Inf" as a result. I can't find in the documentation why this is and how I can avoid it. Are my parameters for the model not accurate enough? Is there something else wrong?
My function looks like this: SIRsim %>% pfilter(Np=5000) -> pf logLik(pf)
From an online course lesson entitled Likelihood for POMPS https://kingaa.github.io/sbied/pfilter/ , this is the R script for the lesson. However, the code works here... I'm not sure how to reproduce my specific problem with it and unfortunately cannot share the dataset or code I am using because it is for academic research.
...ANSWER
Answered 2021-Jan-03 at 22:31If I set Beta=100
in the code above I can get a negative-infinite log-likelihood.
Replacing the measurement-error snippet with this:
QUESTION
I try to model a SEIR for UK to evaluate the implemented containment measures and found some code with the pomp package here: https://kingaa.github.io/clim-dis/parest/parest.html I tried to transfer this to my case which adds one stage (E) and three more variables. In the end i want to do a least squared estimation to find the optimal beta. Data_UK_beta0 consists of the variable date (int from 0 to 165) and new_cases (from John Hopkins University dataset).
...ANSWER
Answered 2020-Dec-06 at 18:17The sse
function you've imported from apricom
has nothing (as far as I can see) to do with this problem. (This also doesn't have anything to do with C(++) code compilation, so the [compiler-errors] tag in your question is a little misleading.)
You haven't given us a way to get your Data_UK_beta0
data set so I can't reproduce this, but I assume that you actually want something like:
QUESTION
i have a website that use bootstrap 2.1.1 and the navbar on mobile device as a bug. When i click on the drop down icon, the navbar open very fast and collapse after that. When i reclick, it open normally, but if i click on the Produits dropdown that i sinside the original one, it open ok but when i click on a link inside this dropdown it seems to click on a link inside the background where another link was before i dropdown the menu. The navbar code is as follow:
...ANSWER
Answered 2020-Sep-08 at 19:17In the homepage HTML, line 22:
QUESTION
I am a newbie R user. Now, I have a question related to write out multiple files with different names. Lets says that my data has the following structure:
...ANSWER
Answered 2020-Jun-01 at 18:18Try adding this just before the close of your loop
save.image(paste0("Results_iteration_",i,".RData"))
This should save your entire workspace to disk for every iteration. You can then use load()
to load the workspace of every environment. Let me know if this works.
QUESTION
I am going to use a real json. First of all, I should run the project that is written in Flask, then use the local host to achieve data. Here is the real Json I`m using
...ANSWER
Answered 2018-Oct-08 at 22:50There's a very good article about how to parse complex JSON in Flutter. Here's a quick summary...
Simple Stuff:
QUESTION
first thanks to read this.
I did a workout app for my team, inspired by a yoga app tutorial. My problem is in the yoga app you don't have many sets, just one, and i would like to add sets. I tried to make a for(int i = 0; i < 50; i++)
in my ShowExercises but it didn't work and i would like to have the exercise and the rest repeated, not just the exercise.
Here is my code,
ANSWER
Answered 2020-Apr-11 at 09:45I read your requirements, As per your requirement you want to Show every set one by one and repeat them as well.
what you can do is create a CountDownTimer
set time period to your each set then after completing one set, move to next one and when your setsList reaches to last one reset or repeat Timer.
Sample Code
QUESTION
I am struggling to get a good code for below transformation FROM: (S (S (pomp:stem) (ous:suffix)) (ly:suffix))
To: (S (S (STEM pomp) (SUFFIX ous)) (SUFFIX ly))
Stem/suffix/prefix are standard terms while pomp/ous/ly will vary for each word. I have 1000+ such rows which needs to be transformed I tried regex match/findall with series of steps but not getting a clean results. Is there a quick way to solve this?
...ANSWER
Answered 2020-Feb-06 at 18:47you could do:
QUESTION
I'm trying to have a result produced based on 2 values that both are the result of formulas applied to multiple input fields.
I have succeeded somewhat in creating a multitude of if/else statements basically with the power of elimination of the smallest value first.
Now just this 'simple' if / else function is about 40~50 rows of code. and my lack of knowledge prevents me of finding a better solution. I hope someone could point me in a direction.
I've tried looking into selecting from an array but I don't feel this is the solution to my problem as there is not 1 value but 2 values are required.
...ANSWER
Answered 2019-Aug-10 at 18:09One option, to at least make it better, is to split finding the prompt and doing the DOM interaction (setting the element)
Like this:
QUESTION
How do I use relative positioning to display two lines of info on an image without the order of info affecting each other.
So here the Files badge to be displayed at the bottom of the image, with the MusicBrainz and * DIsocgs* badges above. Then Files and MusicBrainz should be at the same left alignment on the left of the image. The height is fine but unfortunately the badges are displayed in left to right aligned in the order they are added, I don't known how to fix this.
Also, I don't understand why hyperlink below the image is correctly aligned, why doesn't that get shifted over to the right ?
...ANSWER
Answered 2019-Jul-21 at 12:18If I understand you correctly, here is my approach.
- Wrap all the "overlaps" element into one box (
div
) so you will have to deal with only one element. - Use
position: absolute
for it so it will not break the other elements layout. In short, even thoughposition: relative
allow to "move" the elements the browser still "keep" their original place and other elements will flow only after them (read more about that) Notice that in this case, the image's "container" (.figure
) should getposition: relative
.
I also moved out the link .figure-caption
outside of .figure
because that I think that it's better to the image "container" to contains only the images and the "floating" elements and not the "statics" (like the link).
So here is my suggestion:
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