We are developing a library for statistical plotting which is pure Kotlin and multiplatform: https://github.com/JetBrains/lets-plot The library includes some statistical algorithms - in particular, smoothing algorithms. We've picked some low hanging fruit -

linear model

(or

lm

) smoothing - although we have not yet implemented more complex algorithms such as

loess

,

glm

or

gam

. Is anybody aware of a pure-Kotlin statistical library in existence or in development which might include said algorithms?

Second kotlinconf day records have arrived. The most important thing for scientific ecosystem is the talk from @roman.belov:

Not many languages that have the language designers backing an initiative for improving their data science presence.

Hello. I have followed the instructions for installing kotlin-jupyter using Gradle and even using pip but I don't understand how to start the notebook since typing

jupyter console --kernel=kotlin

shows that jupyter is not installed. I am using Ubuntu. Do I install jupyter separately?

I am trying to create a notebook

Do we have anything similar to PyMC in Java/Kotlin?

I would be fine with that but then I can't use the same names since the extension function won't be chosen over the virtual function of the same name.

Hi folks! 👋 I’m stopping by to introduce myself, because I expect to be hanging out in this channel quite often. My name’s Maria, and I am now helping the team to make Kotlin better suited for data professionals.  One of the first things that I’d like to do is to get to know this community better, and to do so I would like to conduct a series of interviews with you. My goal is to understand what you do, how and why, and ultimately how we can make Kotlin better suited for your needs. You can help us immensely by volunteering to participate in these interviews :)  Please DM me if you have some time to spare and would like to help us, and I’ll share more details.

Features of Kotlin Orbit Estimation Library (KOrbEstLib): http://www.irbis-nbuv.gov.ua/cgi-bin/irbis_nbuv/cgiirbis_64.exe?C21COM=2&I21DBN=UJRN&P21DBN=UJRN&IMAGE_FILE_DOWNLOAD=1&Image_file_name=PDF/oap_2018_31_41.pdf

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what I'm not finding after only a few minutes of googling is anyone who has undertaken benchmarks across jvm<->non-jvm dataframe tools. there appears to be some articles but this looks like a very non-standardized area. i found microbenchmarks of pandas operations as well, but the machine-killing heap hazards are not in those benhcmarks.

Hi everyone! How can use krangl with Smile library? For example with Linear Regression (OLS in Smile)

Hey guys, I build a desktop software but have been contracted to help build some data collection. Its gotta be on-site (no cloud). Its mostly collecting data from a set of my-sql dbs written to by embedded devices. Might have latency requirements (I've pushed back on "real time"). I'm thinking about using Apache Camel, but itl be my first time using this framework. Anyone here got experience with it?

is there any reason all the demos are using javafx-swing?

An interesting experiment: https://medium.com/@zaleslaw/how-to-train-the-linear-regression-model-with-tensorflow-java-api-on-kotlin-89e2bf2f2b34

@Maria Khalusova It would be nice to have a discussion about API design. It won't do to just copy Python API in kotlin.

Hi everyone, this is probably not really the right place to ask, as it’s more a lets-plot question. but since I’m using lets-plot-kotlin I’m just asking here: how can I configure the axis of a plot? I’ve got 5000 points, but I don’t want to have 5000 entries on the y-axis 😅 (step size 1000 is enough) Can anybody point me in the right direction? I’ve already checked https://nbviewer.jupyter.org/github/JetBrains/lets-plot/blob/master/docs/examples/jupyter-notebooks/legend_and_axis.ipynb but couldn’t find something useful. Thanks a lot!

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Some deeplearning4j kotlin notebook samples: https://github.com/fbrunacci/kotlin-notebook-samples. I hope the author will join us for the discussion.

Hi folks! We’ve just released an update to the Kotlin kernel for Jupyter! Now it supports a proper completion and compilation errors detection on the fly. Just like in IDEA ;) More details here: https://blog.jetbrains.com/kotlin/2020/05/kotlin-kernel-for-jupyter-notebook-v0-8/

Hello! This question isn't about Kotlin but about DL4J, my deep learning model works great with cpu but when I try to use my gpu, my model score just fly up to 4600 in 10k iteration, how can I understand the reason behind it

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@roman.belov How do I insert static JS loading into the notebook module configuration? Am I right that

DISPLAY(HTML(jetbrains.datalore.jupyter.configureScript()))

has something to do with that?

I've got a kotlin project using Bazel as the build system. I'm struggling to figure out how to get my library code/files to be visible in the jupyter-kotlin notebook. I've tried

@file:DependsOn()

with a path to the .jar file which works so long as there are no external dependencies in that file. Is there an example of how to work with local IDE code in a kotlin notebook?

After some reverse engineering, I found out how lets-plot loads its dependencies. It does more or less what I expected - loads and cached the script. The important problem is that it won't work without internet. I think, that those JS files should be loaded locally. @Anatoly Nikitin, I left an issue on the github about that.

Hello everyone, Im new both to kotlin and slack, I was experimenting with the kt jupyter notebook kernel and I was wondering 1. Is it possible to download the plots I create as images? 2. Im using lets-plot but the documentation link seems to be dead, Is there a way to hide some of the values of one of the two axis to make its values readable? I have way too many entries on my data set and the labels get overlayed and become unreadable

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