This is the homepage of Lisa Zhang.


CSC108 Introduction to Programming Summer 2018, University of Toronto

CSC411 Introduction to Machine Learning Winter 2018, University of Toronto

Me In a Nutshell

I love machine learning, math, data visualization, and writing -- though unequally.

Variety of experiences makes me a bit of a jack-of-all-trades: I've been a programmer, startup founder, and data scientist, and am now a Masters student at the University of Toronto.

Writing non-fiction helps me organize my thoughts. Writing fiction forces me to understand humanity. The non-fiction content is in a blog.

I also enjoy teaching and public speaking, and hope to become more experienced at it.

Bragging Bio

I gave a talk at the Spark Summit East 2016 conference in New York.

While studying pure math at University of Waterloo, I scored 33 points on the Putnam math contest (where median score is 0 most years). Sixteen (16) months of my undergrad was spent in California on internships at companies Facebook, ContextLogic (Wish), and Tagged. I wrote on the Facebook Data Science blog.

won things.

In 2011, I founded a startup, Polychart. In 2012, I rejected an (non-trivial) acquisition offer, instead opting for a break-up of the entire team. In 2013, with a re-built team, we were one of five companies in the ExtremeStartups accelerator. In late 2013 Polychart was open sourced.

A few blog posts that I wrote have gone on the front page of Hacker News.

Links, Projects, Things.

Tiny EpiphanyThis is my blog, formerly known as "A Notebook". I write about whatever comes to mind, technical and not.

PolychartData visualization software that connects directly to your database, and helps you explore the data using drag-and-drop.

Polychart.JSJavaScript library built on top of RaphaelJS. My take on the Grammar of Graphics and how to handle interactions. The way data transformations are handled are interesting here too.

My ResumeSlightly more structured overview of what I did.

Data In ColourA now defunct data (visualization) blog. I keep it up there still to keep links alive. I bought both domains  and because I am Canadian.

Secret ComicLate 2013, I was deep in a quarter-life crisis and drew some comics. Didn't tell anyone about it so keep it a secret.


You can email me at lisa [at] polychart [dot] com. I try my best to answer.

Alternatively, you can tweet to me at @lisaczhang .