Jingwen Zheng

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Archive

2025

Jan 01Review of 2024

2023

Dec 29Review of 2023
Apr 23Data Engineers' roles in their job

2022

Dec 26Review of 2022
Oct 31Data Science in Retail Discount
Sep 25Building Azure function with Python
May 14Learning PostgreSQL with Docker
Jan 03Second-hand apartments transactions in Île-de-France (01/2014 - 06/2021)
Jan 02Second-hand apartments transactions in Paris (01/2014 - 06/2021)

2021

Dec 30Review of 2021
Nov 27Writing dataframes into an Excel template
Oct 30Do you know which COVID-19 vaccine brings the most obvious reactions?
Sep 20Do you know the reactions of Modena vaccine?
Aug 20Do you know the reactions of Oxford/AstraZeneca vaccine?
Jul 15Do you know the reactions of Coronavac vaccine?
Jul 01Do you know the reactions of Pfizer vaccine?
Apr 27How to create a data pipeline with Azure data factory and slack?
Apr 18CRM in retailing
Feb 09Multiple KPIs in retailing (Part 2)
Jan 17Multiple KPIs in retailing (Part 1)
Jan 10How to convert projected coordinates to latitude longitude by Python?
Jan 03Second-hand apartments transactions in Île-de-France (01/2014 - 06/2020)
Jan 02Second-hand apartments transactions in Paris (01/2014 - 06/2020)

2020

Dec 29Review of 2020
Dec 07Draw subway and tramway with folium
Nov 18Excel: vlookup vs. index & match
Nov 14How to get geographic information by Google Geocoding API?
Nov 08How far is the nearest COVID-19 testing site?
Oct 26How COVID-19 impacts people's working in France?
Sep 08Data transformation with pandas vs. pyspark
Jul 16How to apply mock with python unittest module?
Jul 04How to get a YouTube video's information with YouTube Data API by Python?
Jun 28Youtube video's comments analysis Jay Chou Mojito
Jun 01How to send E-mails with Python?
May 23Learning pyspark with Docker
May 12COVID-19 worldwide analysis (up to 2020-05-10 UTC+02:00)
May 0133 things to know about pandas dataframe
Apr 1924 things to know about pandas series
Apr 16Who use Paris' wifi hotspots?
Apr 03COVID-19 worldwide analysis (up to 2020-04-02 UTC+02:00)
Mar 29Draw animated graphs with matplotlib
Mar 23COVID-19 pandemic spreads of TOP 10 countries
Mar 15COVID-19 worldwide analysis (up to 2020-03-14)
Mar 08COVID-19: Does France underestimate the number of cases?
Mar 03COVID-19 analysis (up to 2020-03-02) COVID-19分析（截至2020年3月2日）
Jan 10How to get places' reviews on Google by Google My Business API?
Jan 03How to get places' reviews on Google Maps by Place API?

2019

Dec 25Review of 2019
Dec 17Second-hand apartments transactions in Paris
Nov 08How to draw a variety of maps with folium in python?
Oct 16How to draw a map with folium module in Python?
Oct 04Climate change Series 4: Forest area
Sep 27Climate change Series 3: Electric and energy use
Sep 20Climate change Series 2: CO2 emission
Sep 13Climate change Series 1: Population
Sep 06How to improve pandas dataframe processing performance in Python?
Aug 27Distance application in Data Science
Aug 13Airbnb Paris Analysis
Aug 06House Prices: Regression Techniques
Jul 23How to create a virtual environment by Python?
Jun 26How to install python module fiona on Windows OS ?
May 28Resume of Ensemble Learning
May 07Titanic: survival prediction
Apr 30Resume of Decision Trees with Scikit-Learn
Apr 23Resume of Support Vector Machines
Apr 16Resume of Logistic & Softmax Regression
Apr 09Transfering files with Putty
Apr 02Resume of Regularized Linear Models
Mar 26Resume of Gradient Descent algorithm
Mar 19What is box plot ?
Mar 12Creating a python package for a python job
Mar 05Teradata SQL: How to handle ISO calendar?
Feb 19Python: Connection to SQL Server from Windows
Feb 12Python: Connection to Teradata Database
Feb 07Python: while loop
Jan 29Python: for loop
Jan 22Python: ISO 8601 date
Jan 08Python: Converting between datetime and string

2018

Dec 25Review of 2018
Dec 11Matplotlib Series 11: Histogram
Dec 04Matplotlib Series 10: Lollipop plot
Nov 27Matplotlib Series 9: Word cloud
Nov 21Matplotlib Series 8: Radar chart
Nov 14Matplotlib Series 7: Area chart
Nov 06Matplotlib Series 6: Venn diagram
Nov 01Matplotlib Series 5: Treemap
Oct 25Matplotlib Series 4: Scatter plot
Oct 18Matplotlib Series 3: Pie chart
Sep 16Matplotlib Series 2: Line chart
Aug 04Python PEP 328: import and build package
Jul 26Automate python jobs by GitLab CI
Jul 10Python: Apply regular expression with regex
Jun 19How to manipulate excel workbook by Python?
Jun 14Matplotlib Series 1: Bar chart
May 26Introduction to matplotlib.pyplot
May 10Introduction to pandas data structures
May 10Array manipulation - R vs Python
May 04Data structures - R vs Python

2017

Dec 22Review of 2017
Oct 20Association analysis - Apriori algorithm
Oct 06france is AI
Sep 27R IN ACTION Review 5 - Time series (Part 3)
Aug 13R IN ACTION Review 4 - Time series (Part 2)
Jul 29R IN ACTION Review 3 - Time series (Part 1)
Apr 15R IN ACTION Review 2 - Getting started with graphs
Apr 06R: Working with GeoJSON data and resolve 'Error in ogrInfo'
Mar 04R IN ACTION Review 1 - Data structures
Feb 25Goals of 2017
Feb 17Coursera UCSD Big Data Integration and Processing review
Feb 10UCSD Introduction to Big Data Week 3 review
Feb 03Coursera project catch the pink flamingo

2016

Dec 07UCSD Introduction to Big Data Week 1 & 2 review
Nov 18Analysis of internauts' behavior
Nov 11Impact of different elements on compensation
Oct 18Apply Google Analytics to website
Aug 24Decision Tree
Aug 20Training set and Test set
Aug 14Measuring model performance or error
Aug 14What is Machine Learning?

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