It has been over a year since we released our Spatial Solr Plugin (SSP) to the community and its great to see that its serving so many users so well. During that time there has also been a great deal of work done on adding official spatial search support to Solr. Much of this work is now […]
Mahout – Taste :: Part Three – Estimators
In Taste, estimators are the bridge between the generic item- or user recommendation logic and the specific similarity algorithm. Estimators are mainly used as part of the recommendation process, however, they are also used for evaluating recommenders. Additionally, the ‘recommended because’ feature is also powered by an estimator. This blog covers some Taste internals and […]
Mahout – Taste at Lucene Eurocon and Berlin Buzzwords
A little while ago, I was delighted to present two introductory Mahout – Taste talks, at Lucene Eurocon and Berlin Buzzwords. I received quite a lot of good feedback about the presentations and have been asked by a few attendees to post them. If you’re one of those attendees or you missed the presentation, you […]
Introduction to Lucene Connectors Framework – Part 1
In my previous blog, Searching your Java CMS using Apache Solr: Introduction, I looked at how to synchronize the information in a Java CMS with a Solr index. This blog is an introduction to the Lucene Connectors Framework, a crawler framework I will use to solve the problem of making the information from a Java […]
Mahout – Taste :: Part Two – Getting started
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. […]
Searching your Java CMS using Apache Solr: Introduction
All Content Management Systems (CMS) provide the capability for users to search the content and browse the result. However, commonly this functionality turns out to be insufficient. This can be either because you want to allow users to search over multiple sources (the content repository, but also some external system) and combine the result. Or […]
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.
Spatial Solr Plugin 1.0-RC4
I am pleased to announce the latest release of our Spatial Solr Plugin, v1.0-RC4. This release is a backwards compatible with RC3, and contains the following changes: PDF documentation has been improved to remove inconsistencies in request parameter and source code package names SpatialFilter now includes hashCode and equals implementations, facilitating storage of the filter […]
Spatial Lucene 2.0
In a number of blog entries we have spoken about the spatial search functionality that we have been developing here at Jteam. In the last two weeks, I have had a chance to contribute much of this work back to the Apache Lucene project with the goal of furthering the development of Lucene’s open source […]