I'm Dan, a Software Engineer at Sidewalk Labs, formerly at Mt. Sinai's Hammerlab and Google.

I use computers to solve problems.

Recent Blog Posts

@ 12:07AM EST
AlphaGo vs. Lee Sedol

Thoughts on the ongoing match between AlphaGo and Lee Sedol

@ 12:36PM EST
Extending the Grid to Add 1,000 Photos to OldNYC

A walkthrough of how I added about 1,000 new images to OldNYC.org by building a Manhattan Grid geocoder. This includes photos from intersections which no longer exist, e.g. in areas like the old Gaslight District, which was destroyed to create Stuytown.

@ 02:00PM EST
My takeaways from NIPS 2015

I’ve just wrapped up my trip to NIPS 2015 in Montreal and thought I’d jot down a few things that struck me this year: Saddle Points vs Local Minima I heard this point repeated in a talk almost every day. In low-dimensional spaces (i.e. the ones we...

@ 06:03 PM UTC
Dan writes on HammerLab

Fear not, loyal readers, I haven't stopped blogging. I've just been doing it elsewhere.

@ 02:24 AM UTC
Launched: OldNYC

My latest and greatest side project, which places 40,000 images from the NYPL on a Google Map for your perusal.

See all blog posts, or content from my old blog.


Mapping historical photos from the NYPL.

Read more in Gothamist, The Guardian and The New York Times.

A fast, flexible open source JavaScript charting library for dense data sets.

dygraphs blog

Easy area comparisons between geographic features like countries, states, cities and parks.

blog post

Historical photographs of San Francisco, dated, geocoded, mapped and visualized.

NY Times coverage

Web-based git difftool with syntax highlighting, image support and intra-line diffs.

blog post

Collaborate on crossword puzzles in a Google+ Hangouts video chat.

Other Creations

Libraries/Developer Tools

Google Projects




Email: danvdk [at] gmail

Twitter: @danvdk

github: danvk

StackOverflow: danvk

Facebook: danvdk

Google+: +DanVanderkam

LinkedIn: 340204755

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