# Questions tagged [julia]

Julia is a high-level dynamic programming language designed to address the requirements of high-performance numerical and scientific computing while also being effective for general purpose programming.

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### Julia set in Julia (and other fractals)

I've made the following to draw a series of zooming in images of a fractal. ...
122 views

### How to speed up simple linear algebra optimization probelm in Julia?

I implemented the LSDD changepoint detection method decribed in [1] in Julia, to see if I could make it faster than the existing python implementation [2], which is based on a grid search that looks ...
149 views

### Kernel density regression in Julia

Here is a naive implementation of a kernel density regression algorithm in Julia. The code works, but there is quite a bit of room for improvement though. First, there is not an optimal bandwidth ...
250 views

### Weighted logistic regression in Julia

I'm trying to estimate a weighted logistic regression as part of a bigger project. I have an implementation in Matlab2015b, but I wanted to give Julia a try to see if I could speed up the estimation ...
654 views

### Parsing simple log files in Julia vs Python

I wrote a log parser in Python and Julia. The Python version takes about 8 seconds to process 350 files, while the Julia version takes about 8 seconds to compile, after which it takes over 20 seconds ...
71 views

### Sampling and Reconstructing a signal in Julia

I am a newcomer to the Julia world, so I started trying to implement a very simple program: Sample a signal Reconstruct it (various ways, just rectangular for now) Plot it Everything is fine and '...
33 views

### Iterative procedure to get 3D coordinates from distance constraints

Imagine you have a series of n points randomly generated in a box in 3D space. You also have a list of distance bounds, e.g. points 5 and 3 should be between 1.0 and 2.0 Angstroms apart. There are ...
21 views

### Non-allocating k-nearest-neighbours between two matrices in Julia

I played around with some optimizations when answering this SO question. Sought is a function which given matrices x of size (m, l) and ...
59 views

### How to make my 1D EM algorithm written in Julia faster?

I wrote this code that's supposed to implement a 1-dimensional (!) EM algorithm with k-means initialization: ...
202 views

### WebSocket based API library in Julia

I made a very bare-bones API "library" in Julia which should abstract the interaction with the API. The API is fairly complex - it's based around 2 core layers an HTTPS/REST API for general ...
122 views

### Idiomatic string from/to integer conversions in Julia (Project Euler #33)

I am starting to learn Julia. For getting fluent in the syntax, I am solving some of the easier Project Euler challenges. Problem 33 is about so-called curious fractions, which keep their value after ...
83 views

### Using RemoteChannels for an parallel iterable map

RemoteChannels hit with julia v0.5 There are no examples online, but I managed to get them to work. They are still very new, and all this whole area of multithreading code continues to have running ...
485 views

### Flattening lists of Vectors and Matrices into arrays

For many optimisation methods the parameters must be given as a single vector, such as Optim.jl. But for many interesting functions the parameters/coeffients to be optimised are matrices, or a mixture ...