Questions tagged [julia]

For questions regarding the Julia Programming language

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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 ...
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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 ...
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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 ...
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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: ...
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dimensionality reduction of (partly) categorical metadata

I have several datasets, each with with hundreds of samples. I have different metadata for each data set, which contains about 50 variables per sample. Some of this metadata is clearly redundant. For ...