Radim Rehurek has put together an excellent summary of approximate nearest neighbor libraries in Python. This is exciting, because one of the libraries he's covering, annoy, was built by me. After introducing the problem, he goes through the list of contestants and sticks with five remaining ones.
From: Erik Bernhardsson
Some of you may have seen that Adobe released a new hotfix for ColdFusion 10 last night, called Update 13.
I wanted to share some more insight into the algorithms we use at Spotify. One matrix factorization algorithm we have used for a while assumes that we have user vectors $$ bf{a}_u $$ and item vectors $$ bf{b}_i $$ .
From: Erik Bernhardsson
I think it's funny how MS at some point realized they are not the cool kids and there's no reason to appeal to that target audience. Their new marketing strategy finally admits what's been long known: the correlation between “business casual” and using Microsoft products:
From: Erik Bernhardsson
One thing I encountered today was a trick using bagging as a way to go beyond a point estimate and get an approximation for the full distribution. This can then be used to penalize predictions with larger uncertainty, which helps reducing false positives.
From: Erik Bernhardsson
Several weeks ago, I did an entry, CF911: Why/when you MUST update the web server connector for #ColdFusion 10, and may have missed it.
A lot of people have asked me what models we use for recommendations at Spotify so I wanted to share some insights. Here's benchmarks for some models. Note that we don't use all of them in production.
From: Erik Bernhardsson
Btw I just put something up online that I spent a couple of evenings in my couch putting together: it's a website where you can track any numerical data on the web. Want to know how many Twitter followers you have?
From: Erik Bernhardsson
This was my second time at The Strange Loop.
A lot of people these days know about collaborative filtering.
From: Erik Bernhardsson
Have you installed or updated CF10 (or 11) and found that you still have problems with it running right, even when you have "fully updated" CF10? In this blog entry, I explain how it may NOT be that "CF 10 is broken" but rather that you may have missed an important step when updating it.
If you have a few minutes, you should check out mine and Chris Johnsonâs panel proposal.
From: Erik Bernhardsson
In the small app I am writing for fun I decided that it was time to switch over to a MySQL database.
From: Dan Vega
When you first start playing around with grails you may have the IDE execute commands for you or you may end up running the commands yourself from a shell.
From: Dan Vega
IntelliJ Spring Bean Injection Notification
From: Dan Vega
In my quest to learn Groovy and Grails I have been using Sublime because that is what I am familiar with. I have also been testing out IntelliJ on the recommendation from almost everyone. I have to agree that it is pretty darn awesome and I want to look at one smaller, but pretty cool feature today.
From: Dan Vega
Another one of the great operators that more and more languages support is their ternary operator.
From: Dan Vega
