Questions tagged [julia]

For questions regarding the Julia Programming language

Filter by
Sorted by
Tagged with
1 vote
0 answers
6 views

Checking MixedModel convergence in Julia

I'm trying to teach myself how to use Julia as an alternative to R, and was running into some trouble with checking convergence of a MixedModel object. In R, if I use the following code ...
Vincent's user avatar
  • 11
0 votes
0 answers
7 views

Strange situation RF classification: perfect train, test predictions all in a single category

I am puzzled by an issue with a boolean classification task using RF on a large dimensional dataset (1680 obs x 110 dim) and moderate imbalance (431 vs 1249). train/test partition is random (0.8,0.2) ...
Antonello's user avatar
  • 101
0 votes
0 answers
13 views

specifying probability distribution in julia

R user here (with no Julia knowledge). Trying to use the bigsimr.jl package in R. Can anyone direct me to how to specify a custom probability distribution compatible with Distributions.jl? ...
Rolling Wheel's user avatar
0 votes
0 answers
10 views

Are Julia ML libraries inherently parallelized and optimized?

I am trying to decide if I should learn Julia or stick with Python and its libraries, e.g. TensorFlow and FastAI. One important consideration is whether Julia has a library with similar capabilities ...
Joachim Rives's user avatar
1 vote
1 answer
26 views

Looking for a clustering algorithm for highly noisy data

I am trying to find clusters in some data with high noise (see plot below, data here). I tried using DBSCAN which sort of worked, but it required quite a bit of manually tuning the input parameters ...
Ewout's user avatar
  • 11
0 votes
1 answer
188 views

How to limit a Julia notebook to a single core?

I'm running a Julia 1.4 notebook, via Jupyter lab. I need to limit the notebook to a single logical CPU core, on average. In Python I use the following incantation to restrict Numpy's CPU usage: ...
MRule's user avatar
  • 101
1 vote
1 answer
106 views

Do I load all files at once or one at a time?

I currently have $1700+$ CSV files. Each of them is in the same format and structure, give or take a row or possibly a column at the end. Each CSV is $\approx 3.8$ MB. I need to perform a ...
Jonathan Miller's user avatar
1 vote
0 answers
330 views

Julia - Identity matrix - eye() alternative

I'm working with what I guess is an older textbook that is using an older version of Julia as they are using the eye() function to create an identity matrix, which appears to not exist in the version ...
Michael Corley MBA LSSBB's user avatar
1 vote
0 answers
86 views

Is there a gradient descent-based optimization algorithm that works with non-linear constraints?

I have a function to optimize with ca. 200 parameters + one constraint (sum of squares of the parameters must be equal one) This problem can be solved using Lagrange Multipliers and my intuition ...
Adam Ryczkowski's user avatar
1 vote
1 answer
386 views

What should I master better for professional data science in economics and finance? [closed]

First, excuse me for the noob and long question which is probably doesn’t even belong to here, I know there are several question been answered like this out there, but I think this is going to be up-...
Bence Szabó's user avatar
6 votes
0 answers
218 views

Julia programming language [closed]

I've heard a lot of buzz for Julia programming language and how it's the future of AI. Should I buy into the hype and start learning Julia? Or do you think its better to stick to a better established ...
Jerome's user avatar
  • 346
0 votes
1 answer
970 views

Julia - To Learn or Not to Learn? [closed]

I'm relatively new to data science, having done some machine learning projects at work. My background is in R, although I have some experience in Python. I'm considering choosing one language and ...
bradS's user avatar
  • 1,575
1 vote
1 answer
223 views

Is there any way to collect categorical features quickly in Julia DataFrames?

I'm using Julia 0.6.3 with Dataframes.jl I was wondering if there was any way to get categorial features easily in Julia? For large datasets it can be impossible to enter everything by hand. My ...
Nathan Furnal's user avatar
4 votes
1 answer
387 views

Gradient Check is failing for RNN

I am trying out POS tagging using RNN but not able to figure out what's wrong in my implementation because of which the gradient check is failing. Please help. I am pasting the relevant part below: <...
lex's user avatar
  • 223
13 votes
5 answers
12k views

Best Julia library for neural networks

I have been using this library for basic neural network construction and analysis. However, it does not have support for building multi-layered neural networks, etc. So, I would like to know of any ...
Dawny33's user avatar
  • 8,296
3 votes
1 answer
2k views

Neural network for MNIST: very low accuracy

I am working on solving the handwritten digit recognition problem by implementing a neural network. But the accuracy of the network is coming out to be very low, around 11% for the train dataset. I am ...
lex's user avatar
  • 223
5 votes
2 answers
2k views

Does anyone use Julia programming language? [closed]

Is anyone using Julia (http://julialang.org/) for professional jobs? Or using it instead of R, Matlab, or Mathematica? Is it a good language? If you have to ...
Raffaello's user avatar
  • 187