151
Which Is Closer: Local Beer or Local Whiskey?
For which fraction of the US is the nearest brewery further away than the nearest distillery? Analysis and visualization done with Wolfram Language.
Topics /
Databases & Data
The most popular blog posts about databases & data on Hacker News. 184 posts.
152
Querying Time Series in PostgreSQL
A blog about computer programs, databases, and the future of software development.
153
The R language, for programmers
Some things about the R programming language that programmers coming from other languages are likely to trip over.
154
Hermitage: Testing the “I” in ACID
tl;dr: I have created a test suite for comparing the transaction isolation levels in different databases. I did this as background research for my book . This post explains why.
155
156
Let’s Make a Bubble Map
My previous Let’s Make a Map tutorial describes how to make a basic map with D3 and TopoJSON ; now it’s time to cover thematic mapping in the form of a proportional symbol map. The simplest symbol is a circle, or bubble , whose area is proportional to the associated data. In this tutorial, we’ll make a bubble map of…
157
Stranger in a Strange Land: “Big Data” programmer meets HPC community
I attended the SIAM PP 2014 conference this week, because I'm developing an interest in MPI-style parallel algorithms (also, it was close b...
158
PredictionIO – open source machine learning for predictive features
PredictionIO is an open source machine learning server for software developers to create predictive features, such as personalization, recommendation and content discovery. Building a production-grade engine to predict users’ preferences ...
159
Roshi: a CRDT system for timestamped events
Let’s talk about the stream. The SoundCloud stream represents stuff that’s relevant to you primarily via your social graph, arranged in time order, newest-first. The atom of that data model, an event, is a simple enough thing. Timestamp User who did the thing Identifier of the thing that was done For example, At…
160
WebScaleSQL: A collaboration to build upon the MySQL upstream
Visit the post for more.
161
Principles of good data analysis
Good, thorough data analysis is difficult. Throughout my work, I've found it useful to follow these principles in order to ensure quality and consistency.
162
I Love Julia
For the past half year I’ve been exploring Julia in piecemeal fashion. It’s a language that does not conform to the traditional notions of programming. Julia...
163
164
165
166
Perceptual Image Hashing
Joe Bertolami's portfolio and blog covering artificial intelligence, game development, computer graphics, data compression, and more.
167
168
169
Web SQL Database: In Memoriam
All signs seem to indicate that Apple will finally ship IndexedDB in Safari 7.1 sometime this year. This means that Safari, the last holdout against IndexedDB,…
170
Pyleus: An Open-source Framework for Building Storm Topologies in Pure Python
Introducing Pyleus: An Open-source Framework for Building Storm Topologies in Pure Python Patrick L., Software Engineer Oct 15, 2014 Yelp loves Python, and we use it at scale to power...
171
Multidimensional analysis of plot arcs in thousands of TV and movie scripts
Note: a somewhat more complete and slightly less colloquial, but eminently more citeable, version of this work is in the Proceedings of the ...
172
Fixing Bad Data in Datomic
The free database designed for immutable values and a time-aware information model.
173
Analysis of 419,000 FlapMMO attempts
FlapMMO is a new and popular browser game inspired by Flappy Bird. Unlike Flappy Bird, though, each server has hundreds of other players and you can all see each other. It's lots of fun and I previously posted about hacking FlapMMO for mouse control .
174
175
176
177
178
ZooKeeper: Wait-free coordination for Internet-scale systems
Zookeeper is an Apache project for providing coordination services to distributed systems. ZooKeeper aims to provide a simple kernel (a fil...
179
Call me maybe: MongoDB (2013)
Previously in Jepsen , we discussed Redis . In this post, we’ll see MongoDB drop a phenomenal amount of data. See also: followup analyses of 2.6.7 and 3.4.0-rc3 .
180
Cdb: a fast, reliable, simple package for creating, reading constant databases
Packages that need to read cdb files should incorporate the necessary portions of the cdb library rather than relying on an external cdb library.