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New
The latest blog posts to take off on Hacker News. 130 posts.
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OkCupid on Trial - 4 Month Experiment
10 fictional profiles were created on OKCupid with the same profiles but different photos to test how online dating is different for men than women.
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MySQL is bazillion times faster than MemSQL
I don’t like stupid benchmarks, as they waste my time. I don’t like stupid marketing, as it wastes my time too. Sometimes I succumb to those things, and now in return I want to waste yo…
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OrmHate
Object-Relational Mappers get a lot of hate from people who misjudge the complexities of the task.
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New Data Science Certificate Program
Starting in the fall of 2012, the University of Washington will be offering a certificate in Data Science . The program has two sections: one located in Seattle and the other online. The certificate consists of three separate courses each lasting approximately 3 months. Thus the program can be completed in 9 months…
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One way to fix your rubbish password database
Suppose for a moment that you are running a web site that has a poorly implemented password database that stores password hashes using some...
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PostgreSQL when it is not your job
( Note beforehand: I didn’t get everything. You really also have to look at his slides for the details. Thanks Christophe for posting the slides right afterwards !)
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Building a MongoDB Clone in Postgres
I had a crazy thought. Don't all good ideas start with that phrase? Well, this one was suitably crazy: why not build my own version of MongoDB right on top of Postgres? It sounds a little far-fetched, but in all honesty it's pretty simple.
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Map Simplification with Visvalingam's Algorithm
An interesting challenge in cartography is getting data of the appropriate resolution. As Lewis Fry Richardson observed , the more precisely you measure the length of a coastline, the longer it appears; geographic shapes have infinite complexity. Digital displays, in contrast, are limited by pixels. Choosing too high…
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The girl with the ANSI tattoo
I enjoyed the David Fincher remake of The Girl With The Dragon Tattoo more than I thought I would. Rather than a shallow and cynical Holly...
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Don't use Scatterplots
In a series of blog posts, Gary Rubinstein attempts show that the Value Added Modelling scores recently released by the NYC Department of Education prove that VAM (Value Added Modelling) is not accurate. However, whatever flaws VAM may have, Gary Rubinstein (henceforth GR) hasn't demonstrated them. All he has…
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(Some) ORM haters do get it
Daftar slot online di Modus99 dapat menggunakan qris dan menjadi satu-satunya situs paling terpercaya saat ini dengan berbagai jenis bocoran semua provider.
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Why Use Postgres - Part 2
This post is a list of many of the reasons to use Postgres, much this content as well as how to use these features will later be curated within PostgresGuide.com. If you need to get started check out Postgres.app for Mac, or get a Cloud instance at Heroku Postgres for free Last week I did a post on the many reasons to…
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Machine Learning in Python Has Never Been Easier
At BigML we believe that over the next few years automated, data-driven decisions and data-driven applications are going to change the world. In fact, we think it will be the biggest shift in busi…
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Three things you should never put in your database
There are several things that are not usually appropriate to put into a relational database
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Probabilistic Data Structures For Web Analytics And Data Mining
Statistical analysis and mining of huge multi-terabyte data sets is a common task nowadays, especially in the areas like web analytics and Internet advertising. Analysis of such large data sets oft…
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Why Use Postgres
This post is a list of many of the reasons to use Postgres, much this content as well as how to use these features will later be curated within PostgresGuide.com. If you need to get started check out Postgres.app for Mac, or get a Cloud instance at Heroku Postgres for free UPDATE: A part 2 has been posted on Why Use…
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NumPy on PyPy progress report
Hello. A lot of things happened in March, like pycon . I was also busy doing other things (pictured), so apologies for the late numpy statu...
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Ember and D3: Building responsive analytics
The Corner is Square's technical blog covering software engineering, APIs, data, open source and more.