Trajectory and RadialNexus

Simplified Ontology Management

Thursday April 18 10:00 PDT / 19:00 CEST

We present Trajectory, an ontology management software system that powers RadialNexus, a hosted ontology management service.  We define an ontology as a structured set of terms. Trajectory is designed to help people manage structured sets of terms using a simple, scalable framework. Most people are indirectly familiar with ontologies through hierarchies of categories, usually mis-identified as taxonomies, for browsing business directories and product catalogs. The vast majority of people that manage these hierarchies (and their associated keywords) do so using spreadsheets. Although some people use more sophisticated tools to formally manage ontologies, there is a significant gap between those tools and simple spreadsheets. Trajectory fills that gap, providing import/export facilities, drag-and-drop editing, and collaborative workspaces for managing sets of structured terms.

Ontologies demand graph databases and Trajectory is implemented upon Neo4j. The fundamentals of a graph, the management of nodes and links, is exceptional in Neo4j. We extend the Neo4j model with the dual concepts of Memes and Relationships. Memes build on top of nodes with additional representation facilities, such as providing identifiers, definitions, and languages. Relationships build on top of links by allowing different types of links to inform different traversal functions, with inheritance the primary functionality enabled over a set of different "taxonomic" relationships.  

Over top of this expressive knowledge representation capability, Trajectory provides both user and application interfaces, user management capabilities, collaborative wiki facilities, and search engine integration. We will present the fundamentals of the representation framework, the interfaces, and the additional capabilities.

Speakers: Michael Bauer, CEO, Brilliant Arc

Michael BauerMy Internet background goes back a ways. My first company built the first version of MapQuest. I worked on GNN (Global Network Navigator) and developed an early Internet Business Directory (internet.org). Aside from a stint as VP of Open Source at Jabber and a consultant to Joltid (predecessor of Skype), my focus recently has been all Local. I led the design of Local Matters Destination Search product, managed aspects of the Area Guides local search service and oversaw the creation of the local user-generated content site, Local Guides. Currently focused on taxonomy and ontology software and services.

Sean Bowman, CTO, Brilliant Arc

Sean BowmanTechnology manager and software architect who also knows how to develop. Java developer with more than 10 years of Java experience. Experienced Clojure, Ruby, Rails, and JavaScript developer. Familiar with Python, Objective-C (w/iPhone experience), Erlang, Lisp, Scala. And yes, C and C++ when I can't avoid it.

SQL database experience: Oracle, PostgreSQL, MySQL. Jetty, Tomcat, Netty experience, along with J2EE. Both Swing and SWT development experience, as well as JavaScript (JQuery, Backbone, AngularJS), Flex 3.x and 4.x. Some Cocoa.

Additional experience with the current wave of "NoSQL" alternatives includes MongoDB, CouchDB, HBase, and Neo4j. Also experience in Solr/ElasticSearch/Lucene search technologies.

Background in GIS and mapping, particularly PostGIS, Google Maps, and OpenStreetMaps. 


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