Join us for our upcoming meetup on Thursday, May 25 at the Waterloo Data Hub -- thank you for hosting us! 

We have two talks on the agenda: 

6:00pm - doors open (food, beverages, and good conversation will be provided) 

6:30pm - talk 1: Overview of Apache Lucene - Mayya Sharipova 

7:00pm - talk 2: Harnessing the power of Elastic through graph visualisation - Christian Miles 

Overview of Apache Lucene

This talk provides an overview of Apache Lucene, a crucial part of Elasticsearch and other search engines. Mayya will provide deep dive into Lucene’s scoring models beginning with the classic tf-idf model. The BM25 model, introduced as a default scoring model from Lucene 6.0 and Elastic 5.0, will also be discussed.

Mayya Sharipova, Search and Database Server Engineer, IBM Cloudant

Harnessing the power of Elastic through graph visualisation 

Applications of data analysis against Graph data are becoming increasingly prevalent. From solutions managing critical infrastructure, understanding cyber threats and detecting fraud, it's clear there's great value to working with data models that prioritise the connections between real-world objects.

While graph databases such as Neo4j and Titan are gaining traction there is a lot of interest in the use of Elasticsearch for processing graph data, with or without the use of the X-Pack Graph API.

In this talk, Christian will outline the benefits of a strong Elastic data model underpinning graph visualisations. He'll cover some cutting-edge visualisation techniques including answering common 'where' and 'when' data questions. Christian will also highlight the "Three I's" of creating compelling visualisations that can unlock the visual potential of your Elasticsearch indices.

Christian Miles has worked with customers around the world as they strive to work with and visualise large volumes of data, typically in the graph domain. He is currently Technical Sales Manager for Cambridge Intelligence, makers of KeyLines and is based out of Cambridge, Ontario.

**Christian will be giving a copy of a book on Graph Visualization written by his Commercial Director, Corey Lanum**