Common errors and warnings in manipulating feature stores and models in Solr. Pay attention also to JVM Heap and Zookeeper.
This blog post explains how to list, upload and delete feature and model stores in Apache Solr for learning to rank.
Interleaving is an online evaluation approach for ranking functions, contributed to Apache Solr Learning to Rank by Sease.
This blog post aims to give a better understanding of Docvalues and stored fields in Apache Solr for the operations in which they can be used interchangeably.
I’ve always loved R&D and I’ve always been fascinated by seeing in action the implementation of my ideas. It was in July 2010 when I started my professional journey in the Open Source search landscape, I was a Junior software engineer at the time, and after few months of post graduate research at Roma3 University…
This blog post is about our latest contribution to the Apache Lucene/Solr project:introducing the ability of assigning different weights to synonyms.This contribution aims to help users that deal with complex synonyms dictionaries where it’s important to associate a numerical weight to each of them, for example to boost the ones that are more important in…
In this post we describe an approach to solve the problem of an application that requires both Full and Atomic Updates, using one of the powerful concepts in Object Oriented Programming: Polymorphism.
Let’s quickly setup a Solr development environment for implementation and debugging purposes, with our 5 minutes how to!
The target of this blog post is to shed some light on the topic of request handlers and their relation with the QT request parameter in recent Apache Solr ( >= 7.0). Definitions A Request Handler is defined with a name and a class.It defines an API endpoint to handle and process http requests. The…
When using nested documents and the Apache Solr Block Join functionality it is a common requirement to query for an entity (for example the parent entity) and then retrieve for each search result all(or some of) the related children. Let’s see the most important aspects of such functionality and how to apply complex queries when…