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New
The latest blog posts to take off on Hacker News. 304 posts.
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Pocket Watch: Verifying Exabytes of Data
Dash knows your context, your team, and your work, so your team can stay organized, easily find and share knowledge, and keep projects secure, all from one place.
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Etcd v3: increased scale and new APIs
No single cloud fits all. Explore how we build a more flexible future with hybrid cloud.
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RethinkDB 2.1.5 performance and scalability
This report describes a recent effort that the RethinkDB team took to measure our database product, RethinkDB, under different workloads and in different clustering configurations. We seek to provide a general overview of RethinkDB’s performance metrics for a variety of workloads and potential use cases. In this…
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Jepsen: Crate 0.54.9 version divergence
In the last Jepsen analysis, we saw that RethinkDB 2.2.3 could encounter spectacular failure modes due to cluster reconfiguration during a partition. In this analysis, we’ll talk about Crate, and find out just how many versions a row’s version identifies.
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Inappropriate Uses of Google Trends
Alternatively titled ‘Be aware of context, and maybe start using Google AdWords’ Instead
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What ORMs have taught me: just learn SQL (2014)
I’ve come to the conclusion that, for me, ORMs are more detriment than benefit. In short, they can be used to nicely augment working with SQL in a program, but they should not replace it.
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ArangoDB 3.0 Release – A Solid Ground to Scale
The only enterprise AI data platform that cuts complexity, reduces costs, and gets you to production faster.
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Time-travel queries in CockroachDB
We have added a new feature: time-travel queries. To our knowledge, we are the first database to have implemented the them.
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Numerai, a hedge fund built by a community of anonymous data scientists
On February 27th 2016, an artificial intelligence named NCVSAI joined Numerai. His creator downloaded encrypted stock market data, trained…
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One Year as a Data Scientist at Stack Overflow
One day in January 2013 I found myself wasting time on the internet.
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We’re pretty happy with SQLite and not urgently interested in a fancier DBMS
Every once in a while, someone suggests that beets should use a “real database.” I think this means storing music metadata in PostgreSQL or MySQL as an alternative to our current SQLite database. The idea is that a more complicated DBMS should be faster, especially for huge music libraries.
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Osm-p2p: a peer-to-peer distributed OpenStreetMap database
Digital Democracy is now Awana Digital
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What is Differential Privacy?
Yesterday at the WWDC keynote, Apple announced a series of new security and privacy features, including one feature that’s drawn a bit of attention — and confusion. Specifically, Apple …
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MitM-ing Postgres
I recently had to set up a new postgres instance at work. While we’re already using Heroku Postgres for production loads, we had some requirements for this one that couldn’t be solved without being database admin, and thus had to go self-hosted. That...
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Analyzing Last.fm Listening History
Last.fm is a web site that tracks your music listening history across devices (computer, phone, iPod, etc) and services (Spotify, iTunes, Google Play, etc). I’ve been using Last.fm for nearly 10 years now, and my tracked listening history goes back even further when you consider all my pre-existing iTunes play counts…
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Machine learning for financial prediction
Machine learning for trading is a huge domain, but not all applications are practical in terms of making your money grow. Let's find out what really works!
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A Simple Content-Based Recommendation Engine in Python
Let's pretend we need to build a recommendation engine for an eCommerce web site. There are basically two approaches you can take: content-based and collaborative-filtering. We'll look at some...
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Elasticsearch Based Image Search Using RGB Signatures
In my previous post , I described some experiments I was doing to reduce images to a Bag of Visual Words (BOVW) . My goal is to build a Con...
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R Passes SAS in Scholarly Use
Relative market share of R, SAS, SPSS, Stata, Spark, H2O, and other data science tools
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Mistakes Beginners Make When Working with Databases
When you start out as a developer there’s an overwhelming amount of things to grasp. First there’s the language itself, then all the quirks of the specific framework you’re using,and after that (or maybe before) we’ll throw front-end development into the mix, and somewhere along the line you have to decide to store…
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Scalability, but at what cost? (2015)
Michael Isard, Derek Murray, and I recently sent in a HotOS submission (it’s not blind, so no harm talking about it, we think). The subject is hinted at from...
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