Data visualization

Data visualization is the visual depiction of data through the use of graphs, plots, and informational graphics. Its practitioners use statistics and data science to convey the meaning behind data in ethical and accurate ways.

GitHub: https://github.com/topics/data-visualization
Wikipedia: https://en.wikipedia.org/wiki/Data_visualization
Created by: Charles Joseph Minard
Aliases: dataviz,
Last updated: 2026-04-16 00:07:39 UTC
JSON Representation

https://github.com/itzmeanjan/indian-railway

Exploring Indian Railways time table dataset, with :heart:

data-analysis data-visualization indian-railways matplotlib python python3 railway

Last synced: 17 Oct 2025

https://github.com/vvipjain/bank-loan-report

Bank Loan Reports

data data-analysis data-visualization powerbi sql

Last synced: 19 Jan 2026

https://github.com/afsalashyana/whatsapp-chat-analyzer

Analyze WhatsApp chats with beautiful graphs. Written in JavaFX

data-analysis data-visualization javafx javafx-14 javafx-application whatsapp

Last synced: 04 Sep 2025

https://github.com/waveform80/structa

A small utility for analyzing data structures (e.g. JSON files)

csv data-analysis data-visualization datajournalism datawrangling json yaml

Last synced: 06 Sep 2025

https://github.com/mnpsnuwan/dj_ds

Django Data Science report application.

data-science data-visualization django html-css-javascript python reports

Last synced: 27 Jan 2026

https://github.com/alexpof/ur3-viz

Data mining/visualization of Ur III sumerian texts

d3js data-visualization network-analysis python sumerian

Last synced: 19 Jan 2026

https://github.com/dsnchz/solid-g6

A SolidJS component library for graph visualization, powered by @antv/g6

analysis data-analysis data-visualization graph graph-visualization node-ui solidjs visualization

Last synced: 13 Oct 2025

https://github.com/fatihilhan42/data-science-projects

In this repo, there are (beginner-upper) level projects in the field of data science. I will host these projects that I have done in this field every day in this repo. With the hope that it will be useful to those who are interested in the field of data science like me and will just start...

data-analysis data-engineering data-mining data-science data-structures data-visualization database datascience fatihilhan fortytwo fortytwofficial jupyter-notebook python

Last synced: 11 Oct 2025

https://github.com/qc20/polygonplayground

An interactive 3D physics playground where polygons come to life, blending design and technology in a captivating simulation.

3d-graphics cannonjs creative-coding data-visualization educational-tool frontend-development generative-art geometry interactive-design javascript physics-simulation threejs user-experience-design web-animation webgl

Last synced: 05 Sep 2025

https://github.com/moindalvs/assignment_association_rules

apriori-algorithm association-rules data data-science data-visualization

Last synced: 27 Sep 2025

https://github.com/gabrielcarames/argview-data-visualization

Forecast app from many provinces in Argentina

argentina data-visualization forecast react scss temperature weather-app wildfires

Last synced: 17 Oct 2025

https://github.com/vatshayan/moviesdatareview

It Shows and Visualize Dataset of Movies and their description using Machine learning Algorithms

artificial-intelligence csv data-visualization dataset jupyter-notebook machine-learning movies pandas review

Last synced: 12 Apr 2025

https://github.com/thomasmbury/workshop_datavis_python

Material for workshop on 'Interactive data visualisation with Python'.

dash data-visualization jupyter-notebook pandas plotly workshop

Last synced: 28 Oct 2025

https://github.com/maheshthedev/datascience_bot

Telegram Automated Bot for Data Science community.

ai automation data-science data-visualization machine-learning telegram-bot

Last synced: 04 Sep 2025

https://github.com/abhash-rai/traffic-image-classifier

A web-based solution utilizing a robust tensorflow model for precise traffic condition classification made in ReactJs and FastAPI for backend.

cnn cnn-classification cnn-keras cnn-model data-analysis data-science data-visualization fastapi keras keras-tensorflow python python-3 python3 react reactjs tensorflow traffic traffic-classification transfer-learning

Last synced: 23 Feb 2026

https://github.com/subhadipsinha722133/book-recommender-system

🤖 Book Recommender System is a machine learning application designed to suggest books to users based on their preferences, reading history, and other relevant data.

clustering data-visualization machine-learning recommendation-system sklearn

Last synced: 09 Oct 2025

https://github.com/ivelasq/data-visualization-portfolio

Data visualization project repository.

data-visualization data-viz r

Last synced: 10 Oct 2025

https://github.com/xavierjiezou/china-vis2021-challenge

ChinaVis 2021 数据可视化竞赛

data-visualization dataease

Last synced: 17 Mar 2026

https://github.com/zht007/matlab_vs_numpy

This repo is a tutorial comparing Matlab and numpy (a python library) in signal analysis. Data and Matlab code obtained from the lecture of Dr Chia-Feng Lu. The corresponding python code is provided to help readers to learn how to use free numpy, scipy and scikit-learn library in python to conduct signal analysis tasks.

data-science data-visualization matlab numpy signal-processing

Last synced: 27 Jan 2026

https://github.com/rachit901109/datahack_1_go-jo

The presented solution during DataHack2.0 leverages data analytics and Streamlit to address challenges in analyzing India's booming startup ecosystem from 2018 to 2021. By integrating openly available news and datasets, the interactive dashboard delivers data-driven insights.

case-study data-analytics data-visualization

Last synced: 27 Jul 2025

https://github.com/jahnvisahni31/airport_analysis

This project is a comprehensive Power BI dashboard analyzing airport operations, focusing on flight delays, time analysis, and detailed flight information to improve efficiency and passenger satisfaction.

airline-performance airport airport-operations aviation business-intelligence dashboard data-analytics data-visualization flight-analysis flight-data flight-delays power-bi time-analysis

Last synced: 19 Feb 2026

https://github.com/seporaitis/lt-geojson

Various level exports of lithuanian administrative districts in GeoJSON format for data visualizations.

data-visualization geojson gis gis-data lithuania lithuanian map

Last synced: 11 Jun 2025

https://github.com/pkini2002/nmamit-cse-labs-2020-24

Repository to store the lab programs of NMAMIT B.E in CSE labs.

8086-p algorithms android-app-development c-plus-plus-17 c-programming compiler-design computer-graphics computer-networks data-structures data-visualization dbms java machine-learning microprocessor mssqlserver object-oriented-programming perl python shell software-testing

Last synced: 11 Jan 2026

https://github.com/gregyjames/birdy

A simple tool to analyze key data about your twitter following/followers.

analytics api data data-science data-visualization python tweepy twitter twitter-api

Last synced: 26 Feb 2026

https://github.com/edaaydinea/datacamp-projects

This repository is included artificial intelligence, machine learning, data science, computer vision projects through DataCamp.

data-visualization datacamp machine-learning projects python r

Last synced: 24 Mar 2025

https://github.com/graphieros/vue-data-ui-doc

Documentation website for the Vue Data UI library: full guide & chart builder

data-visualization documentation-site vue-data-ui vue3

Last synced: 08 Jan 2026

https://github.com/guyabel/tidycat

Expand broom::tidy() output for categorical parameter estimates

data-visualization data-viz glm model-comparison r regression-analysis regression-models rstats rstats-package statistical-analysis statistical-modeling

Last synced: 27 Oct 2025

https://github.com/marszall87/retention

Calculate user retention matrix and render table or chart with data

analytics chart data-visualization metrics retention

Last synced: 18 Jan 2026

https://github.com/vikas-ukani/data-analysis-with-python---zero-to-pandas

Attend Complete Data Analysis Course from freecodecamp.com

data-analysis data-science data-visualization machine-learning numpy numpy-arrays pandas

Last synced: 17 Oct 2025

https://github.com/globeandmail/startr-cli

A command-line scaffolder for the startr R project template

data-analysis data-journalism data-visualization journalism r

Last synced: 23 Apr 2025

https://github.com/asepscareer/visualization-using-plotly-and-covid-19-data

Covid-19 Analysis using plotly : Choropleth Maps

choropleth-map covid-19 data-analysis data-visualization plotly python

Last synced: 12 Apr 2025

https://github.com/pablrod/perl-dash

Analytical Web Apps in Perl (Port of Plotly's Dash to Perl)

charting data data-visualization perl reactjs web-app

Last synced: 29 Apr 2025

https://github.com/cyberoctane29/tiktok-claims-classification-end-to-end-analysis-and-modeling

This project analyzes TikTok videos to classify claims vs. opinions using Python. It includes EDA, statistical tests, logistic regression, and ML models (Random Forest, XGBoost) to support content moderation. Built with pandas, scikit-learn, and Tableau, the solution helps TikTok automate content review and enhance moderation efficiency.

content-moderation data-analytics data-visualization eda ethical-artificial-intelligence feature-engineering machine-learning regression-analysis statistical-analysis supervised-learning tiktok tiktok-data

Last synced: 22 Apr 2025

https://github.com/sdam-au/sdam

Provides digital tools for performing analyses within Social Dynamics and complexity in the Ancient Mediterranean (SDAM), which is a research group based at the Department of History and Classical Studies at Aarhus University.

aarhus-university cartography data-visualization dataset digital-humanities encoding extract inscriptions r rest-api temporal

Last synced: 10 Apr 2025

https://github.com/detectivekaktus/bridgewatcher

Make your crafting, refining, and trading in Albion Online easier

albion-online bot container data-visualization discord discordpy docker helper linux-app python self-hosted

Last synced: 09 Apr 2025

https://github.com/manishkr1754/airline_delay_dashboard_powerbi

Airline Flight Delay Analytics using PowerBI

airline-delay-analysis business-analytics business-intelligence dashboard data-visualization dax maven-analytics powerbi-report

Last synced: 08 Jan 2026

https://github.com/PioneerCode/pioneer-charts

Data Visualization Charting library for Angular deployments.

angular charts d3 data-visualization pioneer-charts pioneer-code

Last synced: 15 Oct 2025

https://github.com/xdanielsb/charts

D3js libraries which provides visualization for energy consumption

algorithms css d3js data-science data-visualization dynamic-programming energy-consumption energy-monitor html innovation javascript open-data open-datasets open-source packing visualization visualize-data

Last synced: 14 Apr 2026

https://github.com/sondosaabed/data-visualization-with-matplotlib-and-seaborn

Learning to apply sound design and data visualization principles to the data analysis process. Also learning how to use analysis and visualizations to tell a story with data.

data-analysis data-analyst-nanodegree data-visualization matplotlib python seaborn seaborn-plots

Last synced: 09 Apr 2025

https://github.com/madhurimarawat/ml-model-datasets-using-streamlits

This repository contains my machine learning models implementation code using streamlit in the Python programming language.

classifier data-visualization decision-tree diabetes-dataset digits-dataset hyperparameter-tuning kaggle-datasets knn linear-regression logistic-regression machine-learning-algorithms machine-learning-project naive-bayes-algorithm python random-forest regressor streamlit-deployment supervised-learning svm wine-dataset

Last synced: 12 Apr 2025

https://github.com/cusyio/cusy-design-system

Richtlinien für Benutzeroberflächen, Code-Beispiele, Designtools und Ressourcen

accessibility data-visualization gender-equality visualization

Last synced: 25 Feb 2025

https://github.com/scottgriv/river-charts

🌊 📉 A Python, Django, Plotly, and Pandas web application that visualizes river data in real time, pulled using an API from the United States Geological Survey (USGS).

api charts data data-analysis data-visualization dataset django pandas plotly python usgs usgs-api visualization webapp

Last synced: 12 Aug 2025

https://github.com/stats4sd/ggebiplots

GGE Biplots rendered in ggplot2

cran-r data-visualization ggplot2 r

Last synced: 15 Apr 2025

https://github.com/jimmymugendi/email-sms-spam_classifier

Email SMS Spam Classifier is a cutting-edge machine learning solution designed to combat spam messages in email and SMS communications. Leveraging advanced Natural Language Processing (NLP) techniques, the system preprocesses text data by tokenizing, removing stopwords, and stemming, ensuring the most accurate classification results.

data-analysis data-visualization machine-learning-algorithms pandas seaborn-plots sklearn-library

Last synced: 25 Sep 2025

https://github.com/varunsingh87/frequency-analysis-simulator

A Java program that decrypts classical ciphers without keys using frequency analysis. Includes support for simple (mono alphabetic) substitution cipher, Vigenere cipher, Caesar cipher, Vernam cipher, and variations.

cipher computer-science-project cryptanalysis data-visualization frequency-analysis frequency-analysis-simulator java monoalphabetic-cipher vigenere-cipher

Last synced: 17 Apr 2025

https://github.com/khyatimahendru/dimensionality-reduction

This is an implementation of 3 dimensionality reduction techniques - PCA, SVD, and tSNE for visualization of high dimensional data in 2D and 3D.

data-visualization dimensionality-reduction mnist mnist-classification pca svd tsne tsne-algorithm

Last synced: 07 Apr 2025

https://github.com/robinmillford/cortex-ai-multi-model-insights-hub

Cortex AI: Multi-Model Insights Hub is an advanced platform that leverages cutting-edge AI to empower your research, analysis, and data exploration. By integrating multiple Large Language Models (LLMs) with a sophisticated Retrieve-and-Generate (RAG) system

article-extractor chatbot data-analysis data-visualization deepseek-chat deepseek-r1 llama3 llm pdf-document-processor rag streamlit-webapp summarizer vector-database

Last synced: 28 Oct 2025

https://github.com/davidzajac1/reptoro

A Data Visualization and Analytics Platform for the Reptile Industry

analytics data-analysis data-visualization plotly-dash python

Last synced: 04 Oct 2025

https://github.com/apache/echarts-mcp

Apache ECharts MCP Server

data-visualization echarts mcp

Last synced: 27 Jul 2025

https://github.com/quantumudit/analyzing-whiskyexchange-whisky

This project focuses on scraping data related to Japanese Whiskey from the Whiskey Exchange website; performing necessary transformations on the scraped data and then analyzing & visualizing it using Jupyter Notebook and Power BI.

data-analysis data-science data-transformation data-visualization etl jupyter-notebook power-bi python webscraping

Last synced: 15 May 2025

https://github.com/quantumudit/regional-sales-analysis

This project focuses on analyzing and visualizing the United States regional sales for a fictitious company in between 2018-2020 using Python & Power BI.

data-analysis data-visualization databases jupyter-notebook power-bi python sqlite

Last synced: 15 May 2025

https://github.com/kinotiodotdev/drowser-studio

Track, Visualize and Analyze

data-visualization easy-to-use json-config metrics monitoring testing

Last synced: 05 Aug 2025

https://github.com/quantixed/igorcolortables

Expanding the use of color tables in IGOR Pro

data-visualization fiji igor-pro lookup-table

Last synced: 27 Aug 2025

https://github.com/franpog859/darwinlogs

🙊⌚️ Simple population evolution simulator Darwin Logs. Population tries to fit in the environment. All statistic data is provided in CSV format for further analysis

analysis csv data-visualization genetic-algorithm gnuplot oop

Last synced: 30 Apr 2025

https://github.com/sushant1827/traffic-forecasting-using-iot-sensor-data

Demonstrates how to utilize XGBoost for traffic forecasting using data gathered from IoT sensors, highlighting its efficiency in processing complex datasets and delivering accurate predictions.

data-analysis data-visualization exploratory-data-analysis feature-engineering feature-importance feature-selection gridsearchcv hyperparameter-optimization hyperparameter-tuning iot random-search xgboost-regression

Last synced: 08 Mar 2026

https://github.com/yueyericardo/simuc

Simulation for Chemistry

bokeh chemistry data-visualization simulation

Last synced: 23 Apr 2025

https://github.com/kot-behemoth/kitsuna-data

Self-hosted one-person data platform

data data-visualization dlt dokku duckdb metabase python sqlmesh

Last synced: 02 Sep 2025

https://github.com/devbruce/idea

Text Data Visualizer with Django

data-visualization django semantic-network-analysis wordcloud-generator

Last synced: 14 May 2025

https://github.com/hackersandslackers/plotly-chartstudio-tutorial

📈 📊 Create Cloud-hosted Charts with Plotly Chart Studio.

data-analysis data-science data-visualization pandas pandas-python plotly plotly-chart-studio plotly-python tutorial

Last synced: 28 Apr 2025

https://github.com/aloth/mindful-coffee

Mindful Coffee ☕️ – Smart iOS caffeine log with cortisol rhythm modeling to optimize energy & sleep. Built with SwiftUI, SwiftData, HealthKit & on-device ML.

ai biohacking chronobiology circadian-rhythm coffee cortisol data-visualization healthkit ios longevity machine-learning personalization predictive-modeling privacy-focused quantified-self sleep-prediction swift swiftdata swiftui wellness

Last synced: 19 Feb 2026

https://github.com/drmrd/heatmapx

Flexible, intuitive heatmap creation on NetworkX graphs

data-visualization heatmap networkx

Last synced: 09 Mar 2026

https://github.com/mch-fauzy/data-science

Repository containing portfolio of data science and machine learning projects. Presented in the form of iPython Notebooks

data-analysis data-science data-visualization ipython-notebooks machine-learning natural-language-processing portfolio

Last synced: 24 Sep 2025

https://github.com/dnsang/fap

big data as a service

bigdata data-analytics data-collector data-mining data-processing data-visualization

Last synced: 09 Mar 2026

https://github.com/graphieros/savyg

A savvy library to create svg elements and quick reliable charts with ease. Lightweight, and usable anywhere.

charts data data-visualization donut donut-chart evolution-chart gauge gauge-chart svg svg-library svg-path

Last synced: 01 Apr 2025

https://github.com/ethankruse/tess_fullsky

Code to stitch TESS FFIs into a full sky mosaic

astronomy data-visualization mosaic mosaic-images tess

Last synced: 27 Jul 2025

https://github.com/rekola/cppvis

C++ Data Visualization Platform

c-plus-plus c-plusplus data-visualization

Last synced: 02 Sep 2025

https://github.com/shuyib/teaching_data_collection

Learn data collection by putting a couple of things into consideration

best-practices data-collection data-science data-structures data-visualization makefile matplotlib pandas-dataframe polars-dataframe

Last synced: 22 Mar 2025

https://github.com/mohamedsaidsallam/wuzzuf-it-jobs-visualization

Data Collection and visualization for jobs offered under the IT section on Wuzzuf for educational and statistical purposes.

data-visualization docker docker-compose lxml python tableau-public

Last synced: 26 Jul 2025

https://github.com/immunogenomics/amp_phase1_ra_viewer

🌻 View single-cell RNA-seq and mass cytometry data in synovial tissues from patients with RA or OA.

cytof-data data-science data-visualization r rna-seq-data shiny-apps single-cell-rna-seq

Last synced: 27 Jun 2025

https://github.com/glotzerlab/plato-gallery

Example notebooks for the plato visualization project

2d 3d data-visualization examples jupyter-notebooks python visualization

Last synced: 24 Aug 2025

https://github.com/yash22222/tata-data-visualisation-virtual-internship

Data Visualisation: Empowering Business with Effective Insights Gain insights into leveraging data visualisations as a tool for making informed business decisions.

basics ceo charts cmo data-analysis data-interpretation data-science data-visualization graphs machine-learning mcq microsoft-excel microsoft-power-bi microsoft-word powerpoint-presentations python tableau tata tata-data-visualisation

Last synced: 22 Jul 2025

https://github.com/0mppula/thesis-money-mapper

An extensively documentated Next.js fullstack finance tracker for organizing personal finances. Covers income, taxes, assets, debt, and net worth management. Utilizes next-auth for user authentication and stores user data in a MongoDB database with prisma ORM.

axios data-visualization date-fns finance-application finance-tracker lucide-react money-manager mongodb next-auth next-themes nextjs prisma-orm react-hook-form reactjs recharts shadcn-ui tailwindcss typescript zod zustand

Last synced: 27 Apr 2025

https://github.com/gwennlbh/parcoursup-dataviz

Récupère et génère des graphiques de vos vœux en liste d'attente automatiquement

data-visualization parcoursup

Last synced: 14 Apr 2025

https://github.com/sueddeutsche/hurricane_geodata_app

This repo contains the code for a Shiny-app that offers all currently available hurrican data from the NHC for download as a GeoJson - suitable for most mapping tools.

data-visualization ddj r shiny-apps

Last synced: 23 Aug 2025

https://github.com/tallylab/tallylab

TallyLab is a local-first, end-to-end encrypted data diary app for capturing, analyzing, and sharing data concerning any and everything.

data-visualization end-to-end-encryption ipfs local-first orbit-db personal-tracking

Last synced: 12 Apr 2025

https://github.com/citiususc/olivia

A Developer-Friendly Lidar Visualizer with 3D Stereo

data-visualization lidar-point-cloud stereo-rendering

Last synced: 26 Jul 2025

https://github.com/ansatzcapital/leda

Generate static reports from Jupyter notebooks

data-science data-visualization jupyter jupyter-notebook notebook notebook-publish notebooks-jupyter python reporting visualization

Last synced: 15 Mar 2025

https://github.com/nivas7/deta

React Native job tracker with MVVM architecture & AsyncStorage. Offline-first design with real-time analytics, interactive charts. Clean architecture for scalable mobile development.

data-visualization mobile-app react-native

Last synced: 22 Aug 2025

https://github.com/numbats/cassowaryr

Compute scagnostics on your scatterplots

data-science data-visualization eda high-dimensional-data multivariate

Last synced: 19 Feb 2026

https://github.com/gkar90/realized-volatility

Realized Volatility for stocks in Python

data-science data-visualization trading volatility

Last synced: 30 Apr 2025

https://github.com/piebro/deutsche-bahn-statistics

A Deutsche Bahn statistics website (in German) with plots and tables about train delays, connections, and other railway metrics.

data-visualization deutsche-bahn germany statistics

Last synced: 09 Jul 2025

https://github.com/FireMuse/DragDropGrid

Visual DB view for organizing, changing and creating records using drag and drop tags on a grid

data-visualization drag drag-and-drop drag-drop-grid grid javascript konva konvajs svg

Last synced: 21 Mar 2025

https://github.com/cosmoduende/r-lego

StrangeR things: Building 2D and 3D models… with LEGO bricks? in R. How to emulate and visualize LEGO bricks in 2D and 3D with the "brickr" package in R

brickr data-analytics data-science data-visualization dataviz lego lego-sets lego-universe r-language r-library r-package r-programming r-script r-studio rstats rstats-package rstudio

Last synced: 11 Apr 2025

https://github.com/accurat/react-dataviz

⚛📊🚀 React components to build powerful interactive data visualizations

d3 data-analysis data-visualization react react-components

Last synced: 19 Jun 2025

https://github.com/Lightning-Chart/lcu-tutorial-simple2Dchart-01

Tutorial for LightningChart .Net High-Performance Charting Library. Creating a Simple 2D Line Chart.

chart charting-library csharp data-visualization dotnet example lightning-chart line performance tutorial visualization xy

Last synced: 12 May 2025

https://github.com/natanast/tidytuesday

This repository includes my participation in the TidyTuesday challenge.

data-science data-visualization rprogramming tidytuesday

Last synced: 28 Oct 2025

https://github.com/kinotio/drowser-studio

Track, Visualize and Analyze

data-visualization easy-to-use json-config metrics monitoring testing

Last synced: 02 May 2025

https://github.com/anuejn/57milliarden

A tool for showing the nice things that could be funded instead of the german army

data-visualization germany politics war

Last synced: 13 Apr 2025

https://github.com/pythoncoderunicorn/paletteergallery

my visual color palette gallery for paletteer R pkg

color-gallery color-palette color-palettes data-visualization r

Last synced: 12 Dec 2025

https://github.com/ahammadmejbah/data-science-interview-questions

Data Science is an interdisciplinary field that uses scientific methods, algorithms, and data analysis to extract valuable insights and knowledge from large and complex datasets, helping organizations make data-driven decisions and solve problems.

data-mining data-science data-visualization datascience interview machine-learning python

Last synced: 09 Jul 2025

https://github.com/sujinleeme/ndp-songs-analysis

Singapore National Day Parade (NDP) theme songs lyrics & sounds analysis for visualization

analysis data-visualization journalism jupyter lyrics music ndp singapore spotify spotify-api

Last synced: 23 Jun 2025

https://github.com/victorbenichoux/vizno

Render standalone or servable HTML reports from Python code

data-visualization html-report matplotlib plotting python visualization

Last synced: 05 May 2025

https://github.com/quantumudit/consumer-goods-sales-analysis

This project focuses on analyzing and visualizing the consumer goods sales in the United States between 2015-2016 using Python & Power BI.

data-analysis data-visualization database jupyter-notebook python sqlite

Last synced: 01 Nov 2025

https://github.com/zackakil/iris-dataset-3d-marbles

What if every row/flower from the Iris dataset was represented as a marble in a physics simulation? Using Scikit-Learn with Blender to render the iris dataset in 3d and create a physical simulation of a marble machine to classify the dataset.

3d blender data-visualization flower iris-dataset machine-learning physics-simulation scikit-learn