wfm | Weighted Factorization Machines | Recommender System library
kandi X-RAY | wfm Summary
kandi X-RAY | wfm Summary
Weighted Factorization Machines
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Top functions reviewed by kandi - BETA
- Train the model
- Fit the model
- Batch batch function
- Convert training data to feed dict
- Predicts probabilities for the decision function
- Calculates the distance between predictions
- Batch generator
- Calculates the powers and coefficients for a given order
- Sort a list of nodes
- Compute the shorter decomposition of a basic decomposition
- Matrix multiplication
- Wrap tensor
- Wrap matrices
- Vectorize weights
- Vectorize a dictionary of features
- Retrieve therappe data
- Prepare a categorical dataset
- Retrieve train and test and test cases
- Get train and test examples
- Predicts the decision function
- Predict the prediction function
- Loads state from the given path
wfm Key Features
wfm Examples and Code Snippets
Community Discussions
Trending Discussions on wfm
QUESTION
I have the following DataFrame containing stock data from several finance institutions.
...ANSWER
Answered 2021-Apr-30 at 21:47Try:
QUESTION
I want to use ggplot for generating a plot with 4 different values. In the sample data-frame below I have 4 coloums and I want to plot them all together in one plot. I want "Code" to be the x-axis, "Cor" to be the y-axis, "Vari" to be displayed by different colors and "Con" to be displayed by different symbols.
I know how to plot it with 3 of the 4 colums and so far I just made 2 different plots, one with only "Vari" and one with only "Con". But I want to combine them. I tried:
...ANSWER
Answered 2021-Apr-19 at 20:15Not so sure what the problem is - I feel that from your question you should know the answer...
I'd use color aesthetic instead, because there are not many shapes that have a fill.
And there is a scale_(*aes*)_manual for each aesthetic. I have added this, although the values 1:6 are pretty random.
QUESTION
We have to migrate to Oauth 2.0. However, I am facing the following issues. Status 400 I believe due to some parameters that may not be entered right. If anyone know what could be wrong or have any idea please let me know.
and this is my code:
...ANSWER
Answered 2020-Nov-20 at 18:54looks like you are close. Like MrFlick said without your client ID and starting a case with Xero API tech support (email api@xero.com with your client id and dat of log) its hard to know for sure.
One tip might be it, your redirect URI has to match exactly same value that is in your https://developer.xero.com/myapps/details?appId= dashboard including an end slash.
Also - what is the body of the 400 error, there should be something like
QUESTION
Off Topic: Let me start by saying Java is completely new to me. I've been programming for over 15 years and never have had a need for it beyond modifying others' codebases, so please forgive my ignorance and possibly improper terminology. I'm also not very familiar with RF, so if I'm way left field here, please let me know!
I'm building an SDR (Software Defined Radio) radio transmitter, and while I can successfully transmit on a frequency, when I send the stream (either from the device's microphone or bytes from a tone generator), what is coming through my handheld receiver sounds like static.
I believe this to be due to my receiver being set up to receive NFM (Narrowband Frequency Modulation) and WFM (Wideband Frequency Modulation) while the transmission coming from my SDR is sending raw, unmodulated data.
My question is: how do I modulate audio bytes (i.e. an InputStream) so that the resulting bytes are modulated in FM (Frequency Modulation) or AM (Amplitude Modulation), which I can then transmit through the SDR?
I can't seem to find a class or package that handles modulation (eventually I'm going to have to modulate WFM, FM, AM, SB, LSB, USB, DSB, etc.) despite there being quite a few open-source SDR codebases, but if you know where I can find this, that basically answers this question. Everything I've found so far has been for demodulation.
This is a class I've built around Xarph's Answer here on StackOverflow, it simply returns a byte array containing a simple, unmodulated audio signal, which can then be used to play sound through speakers (or transmit over an SDR, but due to the result not being properly modulated, it doesn't come through correctly on the receiver's end, which is what I'm having trouble figuring out)
...ANSWER
Answered 2020-Nov-16 at 21:39There is a lot that I don't know about radio. But I think I can say a couple things about the basics of modulation and the problem at hand given the modicum of physics that I have and the experience of coding an FM synthesizer.
First off, I think you might find it easier to work with the source signal's PCM data points if you convert them to normalized floats (ranging from -1f to 1f), rather than working with shorts.
The target frequency of the receiver, 510-1700 kHz (AM radio) is significantly faster than the sample rate of the source sound (presumably 44.1kHz). Assuming you have a way to output the resulting data, the math would involve taking a PCM value from your signal, scaling it appropriately (IDK how much) and multiplying the value against the PCM data points generated by your carrier signal that corresponds to the time interval.
For example, if the carrier signal were 882 kHz, you would multiply a sequence of 20 carrier signal values with the source signal value before moving on to the next source signal value. Again, my ignorance: the tech may have some sort of smoothing algorithm for the transition between the source signal data points. I really don't know about that or not, or at what stage it occurs.
For FM, we have carrier signals in the MHz range, so we are talking orders of magnitude more data being generated per each source signal value than with AM. I don't know the exact algorithm used but here is a simple conceptual way to implement frequency modulation of a sine that I used with my FM synthesizer.
Let's say you have a table with 1000 data points that represents a single sine wave that ranges between -1f to 1f. Let's say you have a cursor that repeatedly traverses the table. If the cursor advanced exactly 1 data point at 44100 fps and delivered the values at that rate, the resulting tone would be 44.1 Hz, yes? But you can also traverse the table via intervals larger than 1, for example 1.5. When the cursor lands in between two table values, one can use linear interpolation to determine the value to output. The cursor increment of 1.5 would result in the sine wave being pitched at 66.2 Hz.
What I think is happening with FM is that this cursor increment is continuously varied, and the amount it is varied depends on some sort of scaling from the source signal translated into a range of increments.
The specifics of the scaling are unknown to me. But suppose a signal is being transmitted with a carrier of 10MHz and ranges ~1% (roughly from 9.9 MHz to 10.1 MHz), the normalized source signal would have some sort of algorithm where a PCM value of -1 match an increment that traverses the carrier wave causing it to produce the slower frequency and +1 match an increment that traverses the carrier wave causing it to produce the higher frequency. So, if an increment of +1 delivers 10 MHz, maybe a source wave PCM signal of -1 elicits a cursor increment of +0.99, a PCM value of -0.5 elicits an increment of +0.995, a value of +0.5 elicits an increment of +1.005, a value of +1 elicits a cursor increment of 1.01.
This is pure speculation on my part as to the relationship between the source PCM values and how that are used to modulate the carrier frequency. But maybe it helps give a concrete image of the basic mechanism?
(I use something similar, employing a cursor to iterate over wav PCM data points at arbitrary increments, in AudioCue (a class for playing back audio data based on the Java Clip), for real time frequency shifting. Code line 1183 holds the cursor that iterates over the PCM data that was imported from the wav file, with the variable idx holding the cursor increment amount. Line 1317 is where we fetch the audio value after incrementing the cursor. Code lines 1372 has the method readFractionalFrame() which performs the linear interpolation. Real time volume changes are also implemented, and I use smoothing on the values that are provided from the public input hooks.)
Again, IDK if any sort of smoothing is used between source signal values or not. In my experience a lot of the tech involves filtering and other tricks of various sorts that improve fidelity or processing calculations.
QUESTION
I am getting below error when executing below code snippet and its causing issue when i connected in VPN And this piece of code is working fine when i don't connect to VPN, could anyone help me out what are the steps to correct this issue (tnc .servicebus.windows.net -port 5671|5672 - status is success when connected to VPN)
...ANSWER
Answered 2020-Oct-27 at 16:40The exception that you're seeing indicates that the producer is unable to communicate with the Event Hubs service. Despite identifying the correct ports, it appears that your VPN is not routing the request.
Most often, when we see this behavior, it is due to an environment blocking raw TCP traffic. You may want to consider trying with web sockets to see if that helps. To do so, you'll need to specify a set of options when creating your client. The basic form looks like:
QUESTION
Goal: I'm struggling with an expression (.NET) that can capture just the Full Description Column by itself and a separate expression that can pull just the Net total column. I know both can be captured in one expression but I need to separate expressions capturing each column
My Regex For The Description Column:
...ANSWER
Answered 2020-Oct-26 at 05:00See if this works for you (written in python (i dont's know .net)
QUESTION
I have a Tkinter gui that works when I run it from vs code. When I then close it and press 'run' again on vs code I only see the filename appear in the vs code terminal. At the moment I have to close vs code and re-open it to run the gui. After some hints from Cool Cloud it showed that when I ran the gui from the terminal it was not closing when I clicked to close the gui,if I add root.destrpy() to the end of the script it will correctly destroy the gui if I have only worked on the TAB A of the gui but will not successfully close the gui if I have used the TAB B of the gui.
Code
...ANSWER
Answered 2020-Sep-28 at 10:07I found this How do I close a tkinter window? and a comment from Bryan Oakley which gave me what I needed. For the problem tab (TAB B) I added a destroy button with the command=quit which works fine. Will need to add that to all other tabs too.
QUESTION
I added a dynamic feature module to the android project. I know that hilt does not support this type of modules. I found a workaround for this problem in google documentation.
I have a project structure as below
- App - main module with application activity
- commons
- utils - module with common functionalities for all android modules
- database - includes DatabaseModule (hilt)
- network - includes http client and NetworkModule (hilt)
- injection - includes Mapbox Module Dependencies class
- utils - module with common functionalities for all android modules
- core
- features
- mapboxFeature - includes MapboxComponent and MapBoxModule
ANSWER
Answered 2020-Sep-17 at 15:16In MapboxModuleDependencies you should only define TaskDbRepository like this:
QUESTION
I have a dataframe in which one of the columns contains a lengthy string which contains a lot of information which I need to break up into separate columns and add these to the dataframe. Its similar to this How to add a new column with multiple string contain conditions in python pandas other than using np.where? but I can't see how to adapt that.
I can create the empty columns but I don't know if the string can have elements extracted or if it can be separated into columns.
e.g. Line of data
...ANSWER
Answered 2020-Sep-11 at 13:30You need to trasform the Series obj into string and then you split it. After that you can access each element through its index
QUESTION
From Spring boot project we are calling GraalVM for processing some rules written in JavaScript. But when I am calling GraalVM using multiple threads, it is giving the below exception. If we use synchronized then the below issue is not coming. I know JavaScript runs on a single thread but I wanted to run graalVM using multiple threads. Is there any way to run multiple GraalVMs on multiple threads simultneously?
Some more details about project structure: I have kafka consumer, which is receiving huge messages from Kafka topics and then calling graalvm to process them using some JavaScript rules.
2020-08-14 11:00:28.363 [te-4-C-1] DEBUG c.e.d.j.t.RuleExecutor#110 Function MessageBroker_get_error_info executed in 192546300 ns. 2020-08-14 11:00:28.363 [te-0-C-1] ERROR c.e.d.j.t.RuleExecutor#102 Unexpected error executing TE rule: customer_entities function : com.oracle.truffle.polyglot.PolyglotIllegalStateException: Multi threaded access requested by thread Thread[te-0-C-1,5,main] but is not allowed for language(s) js. at com.oracle.truffle.polyglot.PolyglotContextImpl.throwDeniedThreadAccess(PolyglotContextImpl.java:649) at com.oracle.truffle.polyglot.PolyglotContextImpl.checkAllThreadAccesses(PolyglotContextImpl.java:567) at com.oracle.truffle.polyglot.PolyglotContextImpl.enterThreadChanged(PolyglotContextImpl.java:486) at com.oracle.truffle.polyglot.PolyglotContextImpl.enter(PolyglotContextImpl.java:447) at com.oracle.truffle.polyglot.HostToGuestRootNode.execute(HostToGuestRootNode.java:82) at com.oracle.truffle.api.impl.DefaultCallTarget.call(DefaultCallTarget.java:102) at com.oracle.truffle.api.impl.DefaultCallTarget$2.call(DefaultCallTarget.java:130) at com.oracle.truffle.polyglot.PolyglotValue$InteropValue.getMember(PolyglotValue.java:2259) at org.graalvm.polyglot.Value.getMember(Value.java:280) at com.ericsson.datamigration.js.transformation.RuleExecutor.run(RuleExecutor.java:73) at com.ericsson.datamigration.js.transformation.TransformationProcess.process(TransformationProcess.java:149) at com.ericsson.datamigration.bridging.converter.core.wfm.yaml.steps.ApplyTransformationMessageBroker.execute(ApplyTransformationMessageBroker.java:104) at com.ericsson.datamigration.bss.wfm.core.AbstractStep.run(AbstractStep.java:105) at com.ericsson.datamigration.bss.wfm.yaml.definition.SimpleWorkflow.execute(SimpleWorkflow.java:103) at com.ericsson.datamigration.bss.wfm.core.AbstractProcessor.run(AbstractProcessor.java:64) at com.ericsson.datamigration.bss.wfm.yaml.definition.ConditionalWorkflow.execute(ConditionalWorkflow.java:95) at com.ericsson.datamigration.bss.wfm.core.AbstractProcessor.run(AbstractProcessor.java:64) at com.ericsson.datamigration.bss.wfm.application.WorkflowManagerApplication.process(WorkflowManagerApplication.java:243) at com.ericsson.datamigration.bridging.dispatcher.core.kafka.consumer.KafkaMessageConsumer.processRequest(KafkaMessageConsumer.java:198) at com.ericsson.datamigration.bridging.dispatcher.core.kafka.consumer.KafkaMessageConsumer.listen(KafkaMessageConsumer.java:89) at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:181) at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:114) at org.springframework.kafka.listener.adapter.HandlerAdapter.invoke(HandlerAdapter.java:48) at org.springframework.kafka.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:248) at org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter.onMessage(RecordMessagingMessageListenerAdapter.java:80) at org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter.onMessage(RecordMessagingMessageListenerAdapter.java:51) at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doInvokeRecordListener(KafkaMessageListenerContainer.java:1071) at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doInvokeWithRecords(KafkaMessageListenerContainer.java:1051) at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeRecordListener(KafkaMessageListenerContainer.java:998) at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeListener(KafkaMessageListenerContainer.java:866) at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:724) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
...ANSWER
Answered 2020-Aug-17 at 13:16Yes you can run multiple GraalVM contexts simultaneously.
As described in the following article: https://medium.com/graalvm/multi-threaded-java-javascript-language-interoperability-in-graalvm-2f19c1f9c37b
GraalVM’s JavaScript runtime supports parallel execution via multiple threads in a simple yet powerful way, which we believe is convenient for a variety of embedding scenarios. The model is based on the following three simple rules:
- In a polyglot application, an arbitrary number of JS runtimes can be created, but they should be used by one thread at a time.
- Concurrent access to Java objects is allowed: any Java object can be accessed by any Java or JavaScript thread, concurrently.
- Concurrent access to JavaScript objects is not allowed: any JavaScript object cannot be accessed by more than one thread at a time.
GraalVM enforces these rules at runtime, therefore making it easier and safer to reason about parallel and concurrent execution in a polyglot application.
So when you're trying to access a JS object (function) concurrently from multiple threads, you see the exception you showed.
What you can do is ensure that only 1 thread has access to your JS objects. One way to do this is to use synchronization. Another -- creating multiple Context objects 1 per thread.
This approach is used in this demo application: https://github.com/graalvm/graalvm-demos/tree/master/js-java-async-helidon
it uses a context provider helper class:
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Install wfm
You can use wfm like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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