Siqi Zhu – Medium

Siqi Zhu

LDAvis: a deep dive into the popular topic modeling tool

Did you happen to stumble across my article on the use of topic modeling in feature engineering? This article takes a closer look at these…

5 min readMar 6, 2023

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LDAvis: a deep dive into the popular topic modeling tool

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Siqi Zhu

Upcycle High Cardinality Features Using Topic Modeling

Any thoughts on how you would use the below ‘semi-fixed’ categorical features in a predicative model?

5 min readSep 22, 2022

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Upcycle High Cardinality Features Using Topic Modeling

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Siqi Zhu

All the nooks and crannies — data scraping for your next data science project: batch download .CSV

In a previous article, I wrote about putting together datasets for a recent data science project on Toronto’s Bike Share usage, and how I…

3 min readMay 24, 2022

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All the nooks and crannies — data scraping for your next data science project: batch download .CSV

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Siqi Zhu

All the nooks and crannies — data scraping for your next data science project: import URL JSON data…

Other than the common CSV files, JSON, or ‘JavaScript Object Notation’, is another popular data format to store data on the web. It’s…

4 min readMay 12, 2022

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All the nooks and crannies — data scraping for your next data science project: import URL JSON data…

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Siqi Zhu
in
CodeX

How I Extract Dashboard KPI Data with Selenium

Interactive dashboards are nothing new to the business intelligence world. Yet as we ride through the many waves of Covid-19 in 2020, these…

5 min readOct 14, 2021

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How I Extract Dashboard KPI Data with Selenium

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Siqi Zhu
in
CodeX

Beyond the basics: here are 3 ways I have used JavaScript in Selenium

Basic WebDriver commands are what most of us starts with, and can pretty much do anything needed to interact with a webpage, such as…

4 min readJul 27, 2021

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Beyond the basics: here are 3 ways I have used JavaScript in Selenium

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Siqi Zhu

Yes, you can enter text into a read-only Text box

And it doesn't involve ‘open sesame’.

3 min readJun 10, 2021

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Yes, you can enter text into a read-only Text box

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Siqi Zhu

RSelenium, will work for free

Are you looking for someone to take over the repetitive web data scraping tasks? Consider RSelenium as your new assistant, for free!

4 min readMay 12, 2021

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RSelenium, will work for free

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Siqi Zhu

Automate Two-factor Authentication with RSelenium

Many websites these days require two-factor authentication (2FA) at login, which presents a challenge for automation. I ran into this…

4 min readMay 5, 2021

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Automate Two-factor Authentication with RSelenium

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Siqi Zhu

Siqi Zhu

Many things data. All aspects of fun. You will find tips and tricks that I have curated from data extraction, modeling, analysis, and visualization.

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