Jane Street logo
  • Home
  • All Posts
  • Authors Index
  • Jane Street
  • Subscribe to email updates
  • Featured Reads

    • Read more

      Posts about interviewing at Jane Street and our internship program


    • Read more

      Using ASCII waveforms to test hardware designs


    • Read more

      Finding memory leaks with Memtrace

  • Tags
    • async
    • book
    • c
    • camlp4
    • code-review
    • comments
    • compiler
    • core
    • hackerschool
    • hg
    • incremental
    • internship
    • interviewing
    • ocaml
    • parallel-programming
    • performance
    • ppx
    • real-world-ocaml
    • registers
    • speed
    • ui
  • Get the RSS feed
  • Join Our Team
Jane Street logo
go.jpg

Read more
Feb 28, 2019 | 3 min read

Accelerating Self-Play Learning in Go

At Jane Street, over the last few years, we’ve been increasingly exploring machine learning to improve our models. Many of us are fascinated by the...

By: David Wu
atari.jpg

Read more
Feb 02, 2019 | 12 min read

Playing Atari Games with OCaml and Deep Reinforcement Learning

In a previous blog post we detailed how we used OCaml to reproduce some classical deep-learning results that would usually be implemented in Python. Here...

By: Laurent Mazare
l2-batch-norm_19b.png

Read more
Jan 29, 2019 | 19 min read

L2 Regularization and Batch Norm

This blog post is about an interesting detail about machine learning that I came across as a researcher at Jane Street - that of the...

By: David Wu
incr_dom.png

Read more
Jan 15, 2019 | 1 min read

A tutorial for building web applications with Incr_dom

At Jane Street, our web UIs are built on top of an in-house framework called Incr_dom, modeled in part on React’s virtual DOM. Rendering different...

By: James Somers
shuffle_zoom.png

Read more
Sep 26, 2018 | 12 min read

How to shuffle a big dataset

At Jane Street, we often work with data that has a very low signal-to-noise ratio, but fortunately we also have a lot of data. Where...

By: Chris Hardin
camel.jpg

Read more
Sep 20, 2018 | 8 min read

Deep learning experiments in OCaml

Last year we held a machine learning seminar in our London office, which was an opportunity to reproduce some classical deep learning results with a...

By: Laurent Mazare
smelting.jpg

Read more
Aug 06, 2018 | 13 min read

What the interns have wrought, 2018 edition

Yet again, intern season is coming to a close, and so it’s time to look back at what the interns have achieved in their short...

By: Yaron Minsky
ocaml_release.jpg

Read more
Jun 29, 2018 | 12 min read

Plans for OCaml 4.08

With the external release of OCaml 4.07.0 imminent, we in Jane Street’s Tools & Compilers group have been planning what we want to work on...

By: Leo White
lambdasoup.jpg

Read more
Apr 22, 2018 | 6 min read

Repeatable exploratory programming

Expect tests are a technique I’ve written about before, but until recently, it’s been a little on the theoretical side. That’s because it’s been hard...

By: Yaron Minsky
fpga.jpg

Read more
Apr 04, 2018 | 1 min read

OCaml all the way down

One of the joys of working at Jane Street for the last 15 or so years has been seeing how our software stack has grown...

By: Yaron Minsky
postimage.jpg

Read more
Mar 27, 2018 | 12 min read

Putting the I back in IDE: Towards a Github Explorer

Imagine a system for editing and reviewing code where:

By: James Somers
ocaml_workshop.jpg

Read more
Feb 16, 2018 | 2 min read

Learn OCaml in NYC

Interested in learning OCaml? In the NYC area? Then this might be for you!

By: Yaron Minsky
proof.jpg

Read more
Feb 15, 2018 | 10 min read

Proofs (and Refutations) using Z3

People often think of formal methods and theorem provers as forbidding tools, cool in theory but with a steep learning curve that makes them hard...

By: Xavier Clerc
compiler3d.jpg

Read more
Dec 20, 2017 | 1 min read

Work on the OCaml compiler at Jane Street!

As Jane Street grows, the quality of the development tools we use matters more and more. We increasingly work on the OCaml compiler itself: adding...

By: Yaron Minsky
batch-01.png

Read more
Oct 31, 2017 | 12 min read

Does batch size matter?

This post is aimed at readers who are already familiar with stochastic gradient descent (SGD) and terms like “batch size”. For an introduction to these...

By: Chris Hardin
image.png

Read more
Oct 29, 2017 | 1 min read

How Jane Street Does Code Review (Jane Street Tech Talk)

It’s time for our next Jane Street Tech Talk. When we’ve solicited suggestions for topics, one common request has been to talk about our internal...

By: Yaron Minsky
tech-talk-nate-foster.png

Read more
Sep 26, 2017 | 1 min read

Jane Street Tech Talk, Verifying Network Data Planes

After a summer hiatus, the Jane Street Tech Talks series is back on for the fall! Last we left it, our very own Dominick LoBraico...

By: Spiros Eliopoulos
inverse_colors.gif

Read more
Aug 28, 2017 | 5 min read

Real world machine learning (part 1)

Trading is a competitive business. You need great people and great technology, of course, but also trading strategies that make money. Where do those strategies...

2 3 4

Signals & Threads Podcast

Listen to the latest episode

Featured Tech Talk

The Algorithm for Precision Medicine

Jane Street YouTube Channel

Featured Reads


  • Read more

    Posts about interviewing at Jane Street and our internship program


  • Read more

    Using ASCII waveforms to test hardware designs


  • Read more

    Finding memory leaks with Memtrace

Tags

  • async
  • book
  • c
  • camlp4
  • code-review
  • comments
  • compiler
  • core
  • hackerschool
  • hg
  • incremental
  • internship
  • interviewing
  • ocaml
  • parallel-programming
  • performance
  • ppx
  • real-world-ocaml
  • registers
  • speed
  • ui

RSS

Get the RSS feed

Join Our Team

Jane Street
Where FP meets the real world.

If you're interested in working at a place where functional programming meets the real world, then apply for a job at Jane Street.

Learn more

  • Who We Are
  • What We Do
  • Client Offering
  • The Latest
  • Culture
  • Join Jane Street
  • Contact Us
Disclosures & Policies

© Copyright 2015-2023 Jane Street Group, LLC. All rights reserved. Services are provided in the U.S. by Jane Street Capital, LLC and Jane Street Execution Services, LLC, each of which is a SEC-registered broker dealer and member of FINRA (www.finra.org). Regulated activities are undertaken in Europe by Jane Street Financial Limited, an investment firm authorized and regulated by the U.K. Financial Conduct Authority, and Jane Street Netherlands B.V., an investment firm authorized and regulated by the Netherlands Authority for the Financial Markets (Autoriteit Financiële Markten), and in Hong Kong by Jane Street Hong Kong Limited, a regulated entity under the Hong Kong Securities and Futures Commission (CE No. BAL548). Each of these entities is a wholly owned subsidiary of Jane Street Group, LLC. This material is provided for informational purposes only and does not constitute an offer or solicitation for the purchase or sale of any security or other financial instrument. | Jane Street and the concentric circle mark are registered trademarks of Jane Street.

Privacy Cookies