This blog is a ‘getting started’ article and shows you how to build a simple web-based movie recommender with Mahout / Taste, Wicket and the Movielens dataset from Grouplens research group at the University of Minnesota. I will discuss which components you need, how to wire them up in Spring, and how to create a […]
Enterprise Search using Solr and Lucene
The Enterprise Search market has long been dominated by commercial vendors and their products (e.g. Autonomy and Fast). We at JTeam feel that this era is finally over. At least for certain customers and requirements, there is finally a good Open Source alternative: Apache Solr, which is the Enterprise Search server based on Apache Lucene. […]
Public Wicket introduction course May 27/28
JTeam is proud to announce another public Wicket training. This public Wicket Introduction course (in cooperation with jWeekend) is scheduled on May 27 and 28. For more information (or on-site training inquiries) see: Apache Wicket Training page. Register before April 15 and get a 25% discount! Also, if you register more than one person, you […]
Language analysis comparable to Fast / Endeca for Solr
Good, solid language analysis is a very important asset for the quality of your search results. It is one of the features that for instance Microsoft Fast and Endeca are using as one of their unique selling points. However, you can get the same powerful analysis when using Apache Solr to implement your search.
Free Java hosting with the Google App Engine
Lately I have been looking into and playing around with the Google App Engine. In this post I want to give a little introduction to the Google App Engine, why it can be interesting and how to work with it.
Logging to the syslog from a java application
Every application needs logging, it can help you during development and when debugging those annoying things that do not work in production. One question is where to put the logging events. All linux servers use a system log to log events that take place on the operating system level. You can find logs for the kernel, […]
Mahout – Taste :: Part 1 – Introduction
This post is the first in a series on Taste, a Java framework for providing personalized recommendations. Taste is part of the larger Mahout framework, which features various scalable machine-learning algorithms. In this post I introduce you to the concepts of personalized recommendations, also known as collaborative filtering. After this introduction, Taste’s architecture and extension […]
A new and improved Spatial Solr
Introducing the Solr Spatial Plugin What do a directory services company, a wholesaler of bathroom fittings, a social events guide, an oceanographic data centre and the pan-European library initiative have in common? They all need to offer their clients the ability to search and filter results within a flexible geographic area, defined by the user. […]
Securing connections with TLS
In this article I’ll explore some ways to secure socket communication with TLS from a java application. To make it more concrete I’ll show you SubEtha SMTP (an excellent Java based bare bones SMTP server) and the recent TLS extensions I added to it. What you’ll get from this article: How to mix secure with […]
Exploring the world of Android :: Part 2
And I’m back! Reporting live on the glorious adventures in the exciting world of Android. This blog post is the second one in the Android series. This time with code samples! Yeah! In my first blog post about Android I talked about setting up a project using Android. This time I want to discuss a […]