rethinking | Statistical Rethinking course and book package | Data Visualization library
kandi X-RAY | rethinking Summary
kandi X-RAY | rethinking Summary
This R package accompanies a course and book on Bayesian data analysis: McElreath 2020. Statistical Rethinking, 2nd edition, CRC Press. If you are using it with the first edition of the book, please see the notes at the bottom of this file. It contains tools for conducting both quick quadratic approximation of the posterior distribution as well as Hamiltonian Monte Carlo (through RStan or cmdstanr - mc-stan.org). Many packages do this. The signature difference of this package is that it forces the user to specify the model as a list of explicit distributional assumptions. This is more tedious than typical formula-based tools, but it is also much more flexible and powerful and---most important---useful for teaching and learning. When students have to write out every detail of the model, they actually learn the model.
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QUESTION
I'm attempting to code my first website from scratch and I have found myself stuck on this problem for the last day. I am trying to center the logos for my mobile view. I have them placed correctly in my @media tag and they are displaying inside the grid however after countless tries I cannot get them to center inside of there grid columns. I do apologise if any of my code is messy.
...ANSWER
Answered 2022-Mar-28 at 23:57.company-logos img {
justify-self: center;
}
QUESTION
I'm trying to play a little with django so I've started to create a "solution" to an old problem I have. My background at OO programming and models relation is not that much so I ask for ideas/paths/solutions on how to achieve my goals.
My problem:
I need to define spatial objects and relate them ex: Building 1, inside we have floor 1 and 2, inside floor 2 we have room A and B
At each type of "location" I will place "things" ex: place 1 camera at building 1; place 1 camera at floor 2; place 1 camera at room B
So I can archive the results bellow: Building 1: 3 cameras floor 2: 2 cameras room B: 1 camera
I was planning to archieve this using the old method of a table for each kind of object (building, floor, room) but I'm a little stuck on how to deal with diferent stuff the same way (actions) specialy because after dealing with this I have to put "people" at the equation, ie, I can put person J at room 2 and put a camera on him.
I thank you all in advance on all the thoughts (even if it is to say forget it and code it) because I a little lost here :)
Sorry if this is not the correct way (1st post): @Amun_Re I'm not that good with words, specially in English. The models you posted where my first database object relation, but after discovering the many to many relation I was thinking (and because I need to put objects in room and floor and building and they are differente) that django/python had a better way to deal with this. I'll try to post an image of what I have designed for this phase.
Well, after rethinking all the things I'm trying an OO perspective. If they are going to be treated as same, they at least need to have come from the same place. Right now I have a class "object" that all other classes inherit from (building, floor, person,...) but right now I have an issue, when I try to place a person on a building I get the error:
...ANSWER
Answered 2022-Mar-06 at 15:28Try starting with this:
models.py:
QUESTION
I've just recently migrated my project from Vue 2 to Vue 3, and currently I'm trying to get behind Vue's new Composition API. While I get the concept of Composables etc., there's one use case with the Options API which I haven't been able to figure out how to do with the new API yet.
What I really liked about the Options API's mixins is that they would let met impose additional behaviour on base templates to reuse them in different inheriting components, although I also see the issues they come with. (Note: I just recently found out that extends
was supposed to be used for this.) Now with the Composition API, I'm not sure how to resolve this use case. Take this example:
BaseComponent.vue
ANSWER
Answered 2022-Feb-16 at 16:05The solution I ended up using is to store the component's state into its own module like so:
BaseState.js
QUESTION
I'm working on a codewell challenge and I'm stuck on this portion. I can't make an even space between them, and the images are overlapping.
...ANSWER
Answered 2022-Feb-09 at 13:09You can use width property on each child inside flex container.
QUESTION
I am trying to find a way to handle SIGTERM nicely and have my subprocesses terminate when the main process received a SIGTERM.
Basically, I am creating processes manually (but I believe the issue is the same with mp.pool
for example)
ANSWER
Answered 2021-Dec-25 at 11:45The solution very much depends on what platform you are running on as is often the case for Python questions tagged with [multiprocessing]
and it is for that reason one is supposed also tag such questions with the specific platform, such as [linux]
, too. I am inferring that your platform is not Windows since signal.SIGQUIT
is not defined for that platform. So I will go with Linux.
- For Linux you do not want your subprocesses to handle the signals at all (and it's sort of nonsensical for them to be calling function
term
on an Ctrl-C interrupt, for example). For Windows, however, you want your subprocesses to ignore these interrupts. That means you want your main process to callsignal
only after it has created the subprocesses. - Instead of using
FLAG
to indicate that the main process should terminate and have to have the main process loop testing this value periodically, it is simpler, cleaner and more efficient to have the main process just wait on athreading.Event
instance,done_event
. Although. for some reason, this does not seem to work on Windows; the main processwait
call does not get satisfied immediately. - You would like some provision to terminate gracefully if and when your processes complete normally and there has been so signal triggered. The easiest way to accomplish all your goals including this is to make your subprocesses daemon processes that will terminate when the main process terminates. Then create a daemon thread that simply waits for the subprocesses to normally terminate and sets
done_event
when that occurs. So the main process will fall through on the call todone_event.wait()
on either an interrupt of some sort or normal completion. All it has to do now is just end normally; there is no need to callterminate
against the subprocesses since they will end when the main process ends.
QUESTION
I have three models. Sponsor
, Optin
and Participant
. Sponsor
has a one-to-many relationship with Optin
and Optin
has a one-to-one Participant
.
Which make the models look like this:
Sponsor model
...ANSWER
Answered 2021-Dec-10 at 17:07Since Participant
has a one-to-many relation with Optin
I added the following relation on the Sponsor
model. With the passing the Optin
model als a second parameter to the belongsToMany
method, since it functions as an intermediate table.
QUESTION
I have this code which almost works the way I want. It's a portfolio site, where upon clicking every .Title-line
the div toggles and displays a slideshow where the visitor of the page is able to go trough the project.
My problem now is that when a project toggles and I click the arrows in the slideshow, the entire div closes immediately.
Is it possible to modify the javascript in such a way that each .Title-line
is assigned a div, and it's only when someone clicks outside of both of them that the div collapses again?
ANSWER
Answered 2021-Dec-03 at 09:06To do what you require you can use DOM traversal to find the .content
within the clicked .project
. From there you can add a class to it to display it, while removing that same class from all other .content
elements. Try this:
QUESTION
My Dexie Database db.playground
(with the id audioFiles
) holds infos about audio files. Those audio files have to be analysed by a user, who adds markers (so it is an analog process, not a programmatic one), and once that is done, the user clicks a save button and the audio file's attribute "analysed" must be set to "true".
The Dexie object looks like this:
...ANSWER
Answered 2021-Nov-15 at 03:04You're updating the entire object just to update one entry in an array. Perhaps it is easier to store each nested object as its own object in an object store? Then you can add, remove, edit, and reorder as you see fit. You can store the parent object's details redundantly within each subobject. Store parent id within each child object, then create an index on the parent id, then do getAll on the child object store using the parent id index to load all of the child objects (and sort).
QUESTION
If I change $(window).on("hashchange", function(event){
to$(document).on("hashchange", function(event){
tabscroll loads section once without a second refresh and loading looks good but it doesn't work in IE9,10,11.
index.html
...ANSWER
Answered 2021-Nov-18 at 08:29I found a solution:
QUESTION
I'm looking for recommendations on how to approach a next.js front end that uses Apollo and GraphQL to access a PostgreSQL database. I figured it made sense to separate the front and back end, but I'm realizing there are tradeoffs. Next.js and NextAuth.js seem designed to work well when using the Next.js API functionality.
A few requirements:
- Data needs to be restricted based on the user (public, internal, admin).
- Using Google OAuth for signing in
With this in mind, NextAuth.js gets more complicated if you want the back end to be aware of the user's access rights.
However, if my apollo/graphql back end is independent there are definite benefits like:
- I can swap out the front end if ever needed so there's some flexibility
- Code and dependencies may be simpler than a combined front/back end
My current challenge is that I've got NextAuth.js working within the Next.js app, but I haven't figured out how to control data access. The best idea I've got so far is some sort of token management that mixes NextAuth.js and my back end. That doesn't seem to be the way NextAuth.js is designed though so I'm rethinking the whole architecture and looking for suggestions.
Thanks!
I found a very brief discussion of a similar question here, but I'd love to hear how others would approach this. How to forward user sessions in Next.js + Graphql decoupled architecture?
...ANSWER
Answered 2021-Oct-18 at 19:47I'm going to do my best to give a fairly generic answer, using a JWT for Authorization, but I'm going to have to make some assumptions since I'm not super familiar with Google OAuth & related Google system.
First, and most importantly, it's important to clarify the difference between Authentication, or "who you are" and Authorization, or "what you can do."
The best idea I've got so far is some sort of token management that mixes NextAuth.js and my back end. That doesn't seem to be the way NextAuth.js is designed though so I'm rethinking the whole architecture and looking for suggestions.
NextAuth is an Authentication library, and doesn't support external validation of the NextAuth-created JWTs, so you're right to not want to mix NextAuth with your backend. When someone logs in NextAuth creates a NextAuth-specific JWT (an ID Token) that will be passed between the Client and the Next Server. It tells you who the user is, and proves that they've logged in. Unless you're using database sessions, which I haven't used so can't speak to.
Extra work is required to implement Authorization so that you have a JWT that also describes what access rights the user has, that you can pass to your backend.
Ideally you will be able to leverage Google OAuth for this, and assuming that is the case, this is what I would do:
For the architecture- I'm not very familiar with GraphQL/Apollo, but separation there seems fine. Important to note, though, that not separating is also probably fine. Any approach will have tradeoffs, so you'll have to evaluate what works best for your situation.
- Whenever you make a call to the backend, you pass your JWT with the call as an
Authorization
header, in the form ofBearer
. - On the backend, then, you validate the token with each incoming call, and allow the call to proceed (or not) as appropriate.
This is the relevant info I found in the Apollo docs.
For the tokenIn your NextAuth provider configuration, in the jwt callback you can add information to the NextAuth JWT.
Ideally, your Google OAuth also provides you a JWT (an Access Token). This should be something that should be relatively easy to validate on the backend, and it is what you'd want to use for Authorization.
You can store this Google OAuth JWT (access token) within the NextAuth JWT (id token) when the user first logs in, and then retrieve it on the Next.js server before you make your calls to the GraphQL backend. That would look something like this:
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