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jalammar

708 karma · joined January 22, 2008

http://jalammar.github.io
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jalammar··on A Gentle Visual Intro to Data Analysis in Python Using Pandas
Hello HN, author here. If you've ever wanted to get into data analysis, this is my best attempt at getting you past that first hump. A lot of these concepts are easier than you might think.
jalammar··on Visualizing a Neural Machine Translation Model (Mechanics of Seq2seq+Attention)
Hello HN, Author here. I'd advise viewing on desktop since the post is loaded with animations and some details might be too small to view on mobile. I'd appreciate any feedback. Hope you find it useful.
jalammar··on A Visual and Interactive Look at Basic Neural Network Math
Hello HN, author here. As the title says, this post visualizes three of the most basics math operations involved in neural nets: 1- Calculating a prediction in a trained network 2- Sigmoid 3- ReLU

It's meant mainly to encourage people not to be intimidated by some of these concepts. Once you understand them, they turn out to be much simpler than would appear on the surface.

Any and all feedback is appreciated. Thanks!

jalammar··on Show HN: A Visual and Interactive Guide to the Basics of Neural Networks
https://d3js.org/
jalammar··on Show HN: A Visual and Interactive Guide to the Basics of Neural Networks
Glad you found it useful! Thanks for your feedback!
jalammar··on Show HN: A Visual and Interactive Guide to the Basics of Neural Networks
Even though it's posted on my blog, I hope this fits the bill for "Show HN" since the interactive parts can be tinkered and played with. I'd love any feedback or corrections.
jalammar··on Reasons to consider a cartogram
What about a horizontal bar chart (ordered by value)? Yes you'll have to scan the list to find Wyoming, but it would better relate how Wyoming compares to West Virginia (which seems to have almost the same size square in the cartogram).
jalammar··on Supercharging Android Apps with TensorFlow (Google's Open Source ML Library)
Thanks, man! Glad to see you enjoyed it! I'm going through the course as well! The Python route is certainly the easiest to get your hands dirty with TensorFlow, I must say.
jalammar··on Supercharging Android Apps with TensorFlow (Google's Open Source ML Library)
Hi HN. OP here. Long time lurker. My first tech blog post. I basically tried here to clarify the Android app example that was bundled with the TensorFlow repo. Hope someone finds it useful.
jalammar··on Introducing d3-scale
D3 Stickers link: https://www.stickermule.com/user/1070696243/stickers

Mike, your work never fails to inspire. The cubism slides (http://bost.ocks.org/mike/cubism/intro/#0) read like a revelation. It astounded me how much data you manage to beautifully convey.

jalammar··on Saudi Arabia, an ISIS That Has Made It
What I understand is that Saudi is already home to ~1 million Syrians and the government says they have granted residency visas to 500K more since 2011 -- not as refugees, but as residents. I can't say for certain if they are refusing more refugees or why. But I would guess that the political consequences for such a shift in demographics would be too complicated for the (rather rigid) system of government in Saudi to deal with. Especially with instability in the north and South of Saudi and the complications of the low price of oil. Just a guess, though.
jalammar··on Saudi Arabia, an ISIS That Has Made It
As a Saudi HNer who has spent his life between Saudi and the US, I hope I can point out a few things here. I understand the point the author is trying to make. It does, however, come off to me as unnecessarily hostile and overreaching.

- Saudi Arabia has 18 million nationals. The vast majority of which are sunni salafis (the nomenclature preferred to "Wahhabism"). If Wahhabism was driving motivation for ISIS, then ISIS would have been at least 1000 times the size it is now. Which is clearly not the case.

- While ISIS has similar sounding rhetoric to some hardcore Saudi hardliners, it is almost uniformly reviled and regarded by almost everbody in Saudi as an extreme perversion. And not only since they blew up a number of mosques in the country (or since releasing that video of a Saudi ISIS member executing his own cousin who lay begging for mercy in the begining of that fateful video). But their gruesomeness is as repulsive to Saudis as it is to everbody else in the world. And they are seen as one of the biggest obstacles to the ouster of Bashar Al Assad in Syria (who is responsible for a civil war that has killed more than 200,000 people, mostly Sunni).

- The article makes little effort to distinguish between the Saudi people and the Saudi government. It demonizes the saudi populace even though it is at times the first victim of some of the unsavory consequences of the alliance between the monarchy and the "clergy" (a rather inaccurate term since there is no real hierarchy. The closest thing there is a counsel of elder scholars and those are usually selected for being unwaveringly loyal to the government). There is a subtlty to the dynamic of the populace, monarchy, and clergy that few in the west try to understand. I can expand on this later.

- None of this is to deny the existence of an activist, xenophobic, hateful, Quran-thumping segment that is a loud ultra-minority from which Alqaeda and ISIS try to recruit (with Saudi being one of the first places they often like to target). The government have clamped down HARD on the vast majority of this segment ever since the string of terrorist bombings in Riyadh in the early 2000s.

- Like I try to explain Saudi here, I often try to explain the US to people in Saudi. If there's anything you'd like me to clarify about Saudi, AMA.

jalammar··on Get Your Development Team Started With Go
Check out IntelliJ IDEA with the Go Plugin.

http://www.jetbrains.com/idea/

jalammar··on QuickOffice Will Be Discontinued
I believe they announced this integration at Google I/O. When you get an office document as an attachment, you no longer have to download it or import it into Docs. You would be able to open, edit, and save it in the same office format right from Docs/Sheets/Slides.
jalammar··on Founder Depression
I'll chime in with my experience. I'm in an emerging market in the middle east (Saudi).

I'm the founder of one of the very few funded Internet companies in the country. Spent the last 24 months fundraising with little luck. My God what a brutal time it's been.

When the company ran out of money, I talked with our leading investor about my need for temporary employment (we were talking with a couple of VCs at the time and I didn't want to commit before hearing from them). He ran an Internet company as well, and I worked with them for a while.

I did that for about six months till I knew the investments were not coming. After that I polished my resume and started contacting people and companies about possible full time jobs.

The first question that came to my mind was about which type position to apply for. Before starting the company, I was a software engineer - so I could always fall back on that. But the years I spent working on the startup forced me to be a generalist. It really worried me to think I wasn't sure what sort of position I should be seeking.

It came down to three main options,

1- managing a software product team (which aligns well with my passion for building things) at a software company.

2- working with investment companies interested in Internet/tech investment. What helped me in this area was that I did my homework when we were discussing the term sheet for our seed investment. And that I blogged and spoke about the experience (Arabic content about the topic is very rare, aside from general entrepreneurship hype).

3- working in digital marketing. This drew upon our experience with digital marketing our product. This was my least favorite option, but it had the most market demand.

One of the things that really helped me in this job hunt was that I was visible to the local industry in my attempts to promote the company. I spoke at events about lessons learned, I blogged about the various experiences... Etc.

jalammar··on Ask HN:Any Recommended Resources on Business Development for Technical Founders?
Hey thanks.

I was thinking in general as well as things like partnerships and what not.

jalammar··on Some weekend work that will (hopefully) enable more Egyptians to be heard
It stopped updating and allowing us to edit,any idea why?
jalammar··on Ask HN: What's your favorite April Fools Joke today?
I'll have to make this a shameless plug, but it's probably the only way any of you will get to know about this.

My startup, Qaym.com is a restaurant rating site in Arabic. We're located in Saudi Arabia. April fools isn't a big thing here or in the Arab world in general. But people know the concept. Today we announced that we're changing the site to become exclusively a camel rating site.

We even made a logo: http://blog.qaym.com/2010/04/blog-post.html

And a homepage to boost: http://www.qaym.com/

Most people got it off the bat. Many were confused. And a couple were actually upset, even after they've figured out it was a joke!

jalammar··on Ask HN: Are you a single founder ?
Restaurant reviews indeed.
jalammar··on Ask HN: Are you a single founder ?
1) Since June 2006. Last year gave equity to two team members in exchange for work they already completed.

2) Didn't apply

3) Didn't start looking. It's bootstrapped so far and I want to continue doing it this way until I no longer can. Not that there are any valley-type VCs in Saudi Arabia, but was approached by a couple of interested investors. One didn't really get web startups. Still in talks with the other one though. Investment is not currently needed, but can certainly accelerate growth.

4) http://www.qaym.com (in Arabic)

jalammar··on Coders at work is finally available
There's certainly something to learn about entrepreneurship from some of these guys.

I'm really looking forward to reading about Brad Fitzpatrick. He founded Live Journal, and made or started a lot of the software that powers many giant web startups (Memchached, MogileFS, OpenID...etc).

jalammar··on What are you reading?
Just finished "Heretics of Dune". Now starting "Chapterhouse: Dune". Both are Audiobooks I got from Audible.com. Great production for the whole series.
jalammar··on Ask HN: Realtime chat engine
I looked into this previously and was interested most by XMPP. You can use open source servers like Openfire (Java, http://www.igniterealtime.org/projects/openfire/index.jsp) or eJabberd (Erlang, http://www.ejabberd.im/). It's more instant messaging than chatting, though (although it does support multi user chat)
jalammar··on Algorithmatic: A global repository for algorithms from all fields
Oh, my bad. Sorry about that.
jalammar··on Algorithmatic: A global repository for algorithms from all fields
I'm not actually affiliated with the site.
jalammar··on Algorithmatic: A global repository for algorithms from all fields
Yeah, it was just launched yesterday, though. I was hoping we could help em out getting started.
jalammar··on Ask HN: How do I delegate?
It's a two-part problem. First is finding the right people to delegate the tasks to. Second is to define the tasks, assign them, then evaluate the result.

What kind of arrangement do you have though? Do you have employees? Are you assigning things to co-founders? outsourcing to another firm?

jalammar··on Ask HN: Are you a founder?
Yes, founder of http://www.Qaym.com, a local business review site in Arabic
jalammar··on Yahoo committed seppuku today
With Twitter’s repositioning as “real-time search”, and search becoming a two-dog race, both Google and MS must be salivating to buy Twitter. I wouldn’t be surprised if either of them laid down 1+ Billion to get ahead under these circumstances.
jalammar··on Ask HN: Joining an Incubator. Concerned About 2 Items in The Contract. Advice?
Thanks all, your input is very much appreciated.
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