Hacker News: jbochi

New comment by jbochi in "Regressive JPEGs"

jbochi — Sat, 18 Jul 2026 09:35:16 +0000

And I did something similar to steam live video via an infinite gif: https://github.com/jbochi/gifstreaming#live-video-streaming-...

New comment by jbochi in "Mixpanel Security Breach"

jbochi — Thu, 27 Nov 2025 13:50:22 +0000

Announcing the breach on Thanksgiving day was also certainty calculated.

New comment by jbochi in "Reflections on our Responsible Scaling Policy"

jbochi — Mon, 20 May 2024 10:07:24 +0000

https://nonint.com/2023/11/05/compute-multipliers/

New comment by jbochi in "The One Billion Row Challenge in CUDA"

jbochi — Sun, 14 Apr 2024 16:27:27 +0000

Not sure what I can share publicly, but we use TPUs as well: https://cloud.google.com/blog/products/compute/announcing-cl...

New comment by jbochi in "The One Billion Row Challenge in CUDA"

jbochi — Sun, 14 Apr 2024 15:20:36 +0000

Pretty cool. Shameless plug: My team at Anthropic is hiring people that can write accelerator kernels. Please reach out to @gmail.com if you want to make state of the art models faster :)

New comment by jbochi in "Running Speeds"

jbochi — Sun, 29 Oct 2023 11:11:39 +0000

I like this one: https://youtu.be/OIXVDdH3o6g?si=5zmNifE_Zzm4Rasb

New comment by jbochi in "The Neural Network Zoo"

jbochi — Tue, 19 Dec 2017 23:46:22 +0000

This is already one year old. I am wonder how much the zoo grew in 2017. What were the main network innovations? Capsules and the Transformer?

When an Algorithm Helps Send You to Prison

jbochi — Fri, 27 Oct 2017 15:36:34 +0000

Article URL: https://www.nytimes.com/2017/10/26/opinion/algorithm-compas-sentencing-bias.html

Comments URL: https://news.ycombinator.com/item?id=15569411

Points: 4

# Comments: 0

New comment by jbochi in "Show HN: Using LDA to suggest GitHub repositories based on what you have starred"

jbochi — Mon, 02 Oct 2017 11:18:18 +0000

Very interesting. I've implemented something similar[1] using a pure Collaborative Filtering approach[2][3], that I think works better for me, but it's unable to recommend unpopular repositories.

The New York Times recommender system uses a hybrid approach (Content Based + Collaborative Filtering) called Collaborative Topic Modeling on top of LDA[4]. It would be interesting to try that.

[1]: https://github-recs.appspot.com/

[2]: https://medium.com/towards-data-science/recommending-github-...

[3]: https://github.com/jbochi/facts

[4]: https://open.blogs.nytimes.com/2015/08/11/building-the-next-...

New comment by jbochi in "Gonum – Numerical Computing for Go"

jbochi — Thu, 21 Sep 2017 20:22:42 +0000

Here at The New York Times we are using it to power some of our recommendation algorithms. We are actually training the models with Python and serving them with Go using gonum.

Our library was just open sourced (and still in my personal account, until we add more documentation): https://github.com/jbochi/facts

Ellen Pao Is Not Done Fighting

jbochi — Fri, 08 Sep 2017 19:08:51 +0000

Article URL: https://www.nytimes.com/2017/09/08/style/ellen-pao-gender-discrimination-silicon-valley-reset.html

Comments URL: https://news.ycombinator.com/item?id=15203110

Points: 3

# Comments: 0

New comment by jbochi in "How Not to Sort by Average Rating (2009)"

jbochi — Wed, 30 Aug 2017 16:23:40 +0000

It's very common to see a "Most Popular" section in a website, but the way it's usually done is not optimized for clicks.

Inspired by Evan's post, I wrote "How Not to Sort by Popularity" a few weeks ago: https://medium.com/@jbochi/how-not-to-sort-by-popularity-927...

New comment by jbochi in "Time.gif"

jbochi — Sat, 12 Aug 2017 13:01:29 +0000

MJPEG is indeed much better for this. It uses less bandwidth (GIFs have no compression) and less browser memory (old frames can be discarded). When I was at globo.com, we developed this to serve animated thumbnails for live video streams: https://github.com/jbochi/live_thumb

New comment by jbochi in "Time.gif"

jbochi — Sat, 12 Aug 2017 12:39:27 +0000

This reminds me of a project I've created a few years ago that does live video streaming with endless GIFs: https://github.com/jbochi/gifstreaming

How Not to Sort by Popularity

jbochi — Wed, 12 Jul 2017 12:56:40 +0000

Article URL: https://medium.com/towards-data-science/how-not-to-sort-by-popularity-92745397a7ae

Comments URL: https://news.ycombinator.com/item?id=14752072

Points: 2

# Comments: 0

Recommending GitHub Repositories with BigQuery and Implicit

jbochi — Sat, 24 Jun 2017 17:35:26 +0000

Article URL: https://medium.com/@jbochi/recommending-github-repositories-with-google-bigquery-and-the-implicit-library-e6cce666c77

Comments URL: https://news.ycombinator.com/item?id=14626507

Points: 6

# Comments: 0

How Not to Sort by Popularity

jbochi — Tue, 20 Jun 2017 16:53:00 +0000

Article URL: https://medium.com/@jbochi/how-not-to-sort-by-popularity-92745397a7ae

Comments URL: https://news.ycombinator.com/item?id=14596216

Points: 10

# Comments: 0

Globo.com’s live video platform for the 2014 FIFA World Cup

jbochi — Thu, 01 Oct 2015 15:22:42 +0000

Article URL: https://medium.com/@jbochi/globo-com-s-live-video-platform-for-the-2014-fifa-world-cup-77259eb3b7db

Comments URL: https://news.ycombinator.com/item?id=10311763

Points: 29

# Comments: 4

New comment by jbochi in "FIFA 2014 World Cup live stream architecture"

jbochi — Mon, 27 Apr 2015 17:01:57 +0000

I am glad you liked. I am not the author of the blog post, but I was a member of the team.

1: We just repackage it. 2: The problem is that EvoStream stores the manifests and chunks locally and we needed high availability. That's why we use an external data storage. We have had up to 30 simultaneous streams, with 7 bitrates each and 2 hours of DVR.

New comment by jbochi in "Recursive raytracer in 35 lines of JavaScript"

jbochi — Tue, 19 Nov 2013 10:47:52 +0000

Closure compiler will rename the math variable.