Cadmium | Swift framework that wraps CoreData | iOS library
kandi X-RAY | Cadmium Summary
kandi X-RAY | Cadmium Summary
Cadmium is not designed to be a 100% complete wrapper around Core Data. Some of the much more advanced Core Data features are hidden behind the Cadmium API. If you are creating an enterprise-level application that requires meticulous manipulation of Core Data stores and contexts to optimize heavy lifting, then Cadmium is not for you. Cadmium is for you if want a smart wrapper that vastly simplifies most Core Data tasks and warns you immediately when you inadvertently manipulate data in a way you shouldn't.
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QUESTION
I am doing a time-series sequence classification problem.
I have 80 time-series all length 1002. Each seq corresponds to 1 of 4 categories (copper, cadmium, lead, mercury). I want to use Keras LSTMs to model this. These models require data to be fed in the form [batches, timesteps, features]. As each seq is independent, the most basic setup is for X_train to have shape [80, 1002, 1]. This works fine in an LSTM (with stateful=False)
But, 1002 is quite a long seq length. A smaller size could perform better.
Let's say I split each seq up into 3 parts of 334. I could continue to use a stateless LSTM. But (I think?) it makes sense to have it be stateful for 3 samples and then reset state (since the 3 chunks are related).
How do I implement this in Keras?
First, I transform the data into shape [240, 334, 1] using a simple X_train.reshape(-1, 334, 1) but how do I maintain the state for 3 samples and then reset the state in model.fit()?
I know I need to call model.reset_states() somewhere but couldn't find any sample code out there showing me how to work it. Do I have to subclass a model? Can I do this using for epoch in range(num_epochs) and GradientTape? What are my options? How can I implement this?
Also, if I split the sequences up, what do I do with the labels? Do I multiply them by the number of chunks each seq is split up into (3 in this case)? Is there a way for an LSTM to ingest 3 samples and then spit out one prediction? Or does each sample have to correspond to a prediction?
Finally, if I split my sequences up into 3 subsequences, do I have to have a batch size of 3? Or can I choose any multiple of 3?
Here is the super basic code I used with X_train.shape == [80, 1002, 1].
ANSWER
Answered 2021-May-07 at 13:33The easy solution is to reshape the data from having 1 feature to having 3.
Turn [80, 1002, 1] into [80, 334, 3] rather than [240, 334, 1]. This keeps the number of samples the same and so you don't have to mess around with statefulness. You can also just use it with the normal fit() API.
QUESTION
In Python i would do the following
...ANSWER
Answered 2020-Dec-13 at 13:15Probably better to use a class (and populate dicts within the class init). However, you can have your dictionaries as global public but then need an init to populate with values. You can then call within your funcs
QUESTION
Hello I am using stripe for my android app to take payments. I noticed that when I make a payment the price is always charge $14.00 and I'm guessing that is the default pricing. But I wanted to change that to something else maybe like to 5 dollars or 1 dollar. Can anyone assist me with this? Thanks in advance
...ANSWER
Answered 2020-Oct-20 at 20:43On Stripe, you control what amount you want to create a payment for, with the amount parameter on a PaymentIntent: https://stripe.com/docs/api/payment_intents/create#create_payment_intent-amount
Looks like right now your backend is creating a PaymentIntent for amount: 1400 which is $14.00.
You would have to modify your backend's /create_payment_intent endpoint and modify the amount there.
Ideally, you pass some order or product ID from your Android app to your backend, where your backend then maps an amount out of that product ID (and quantity, if applicable).
QUESTION
I wanted to return the name of elements based on two conditions; even protons number and odd neutrons number. I've tried to print both tests and it turns out well. However, when I try to print the elements using 'and' logical, an error has occurred due to different broadcasting. I can't figure out how do I reshape it. Help me out.
The elements, protons and neutrons.
I've already converted elements, protons and neutrons into arrays.
The input;
...ANSWER
Answered 2020-Oct-16 at 15:26Apply the & to the boolean tests, before indexing:
QUESTION
I am trying to streamline the isotope handler in a react component -- I want to create filter options that would be like catergory[metal] or catergory[transition] -- and combo filters like catergory[metal, transition].
the sandbox for this. https://codesandbox.io/s/brave-sea-tnih7
So like filterFns[ filterValue, "param2" ] -- how to push 2 params into the filter functions - rather than these fixed greaterThan50 -- a "greaterThan(50)", "greaterThan(5) -- this dynamic filtering type of handler "
latest sandbox https://codesandbox.io/s/brave-sea-tnih7?file=/src/IstotopeWrapper.js
...ANSWER
Answered 2020-Oct-11 at 04:07In you application you can stor filters inside an array and update filters array to either new filter (single filter mode) or push newly selected filter on top of existing filters list.
Take a look at updated codesandbox here.
First of all we are registering our filter method with Isotope:
QUESTION
I'm a javaScript begginer. This function works and allows me to sorting list by ascendant and descendant by clicking in a button but I would like to know if it's properly written or maybe it can be simplified or written differently. Thanks in advance.
index.html
...ANSWER
Answered 2020-Oct-11 at 01:29you don't have to clear the innerHTML of the ul, nor even ever use innerHTML
element.appendChild will move existing elements - as below
QUESTION
I have 2 df's with common columns and values
df1:
...ANSWER
Answered 2020-Aug-29 at 06:02- Merge needs to be performed on a column of unique identifiers or a list of columns, which can provide a unique identifier.
- In the case of the example data, all three columns must be used.
['Metal Group', 'Trophic Level', 'Concentration']
QUESTION
I am having an issue creating a chart with some JSON that papaparse gives me. It continually gives me this error.
...ANSWER
Answered 2020-Jul-15 at 03:46I got past being unable to parse the string date from the csv as a Date by going through each element and parsing it as a Date before I sent it off to the generate function.
QUESTION
I came across the following and I haven't figured out the purpose of the "@" operator. What's the meaning there? I didn't make heads/tails of the R manual language.
...ANSWER
Answered 2020-Apr-03 at 16:31meuse is an S4 object
QUESTION
I'm using Newtonsoft JSON in C#.
I have a log file which I am trying to parse so I can populate a database with the data in the log file.
In the log file, each line is a separate JSON object.
Here is what the log file looks like:
...ANSWER
Answered 2020-Feb-07 at 15:41You could do the following.
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