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Wilhansen Li

Wilhansen Li

5 posts •
How to Compute for VAT and Service Charge the Correct Way™️™️™️ (or: Monetary Arithmetic is Case-Specific)
Design & Engineering

How to Compute for VAT and Service Charge the Correct Way™️™️™️ (or: Monetary Arithmetic is Case-Specific)

Let’s compute how three friends will split a restaurant bill, including VAT and Service Charge.

  • Wilhansen Li
    Wilhansen Li
12 min read
Sakay's COVID-19 Response
Announcements

Sakay's COVID-19 Response

We're big believers in the value of information-- the entire point of Sakay is to deliver information about public transport to commuters. We like passing information to our users, and we like doing

  • kenneth
    kenneth
  • Wilhansen Li
    Wilhansen Li
  • Pao Salvan
    Pao Salvan
4 min read
Transit Area Coverage in Pasig During the Transport Strike
Design & Engineering

Transit Area Coverage in Pasig During the Transport Strike

In Sept 30, transport groups staged a transport strike. To minimize the negative impact, LGUs deployed their own routes. Were they able to cover the areas effectively? Let's look at how Pasig's Libreng Sakay fared!

  • Wilhansen Li
    Wilhansen Li
2 min read
Updating Averages and Variances Incrementally
Design & Engineering

Updating Averages and Variances Incrementally

Given a list of numbers, there are multiple ways of computing the average and variance (including the standard deviation). A blog entry by Dr. Cook [https://www.johndcook.com/blog/2008/09/26/

  • Wilhansen Li
    Wilhansen Li
2 min read
Design & Engineering

Understanding Data: Sakay.ph Statistics

Introduction Hello, Wil here! I handle deployment of the iPhone and iPad app [https://itunes.apple.com/ph/app/sakay.ph/id937998546?mt=8] of Sakay.ph, among other things at By Implication

  • Wilhansen Li
    Wilhansen Li
5 min read
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