Gi2MO IdeaStream Ontology Specification

V0.1 - 09 April 2012

This version:	http://purl.org/gi2mo/ideastream/0.1/ns (RDF/XML, HTML)
Latest version:	http://purl.org/gi2mo/ideastream/ns
Editors:	Adam Westerski
Authors:	Adam Westerski
Contributors:	See acknowledgements

This work is licensed under a Creative Commons Attribution License. This copyright applies to the Gi2MO IdeaStream Ontology Specification and accompanying documentation in RDF. This ontology uses W3C's RDF technology, an open Web standard that can be freely used by anyone.

Abstract

Gi2MO IdeaStream Ontology is a standardised data schema (also referred as "ontology" or "vocabulary"). The following ontology is an extension to the base Gi2MO Ontology and is designed to supplement it by providing properties that simplify and shorten serialisation of regular Gi2MO metadata of the Idea Management facilities. The following document contains the description of ontology and instructions how to connect it with descriptions of other resources.

Introduction
Gi2MO IdeaStream ontology at a glance
Gi2MO IdeaStream ontology overview
1. Example
Cross-reference for Gi2MO IdeaStream classes and properties

1 Introduction

The following specification is a formal description of metadata schema proposal that can be applied to data gathered in the so-called Idea Management Systems. The goal of the following section is to introduce both Semantic Web and Idea Management experts to the topic and goals of the ontology and provide the basic knowledge to comprehend the technical part of the specification.

An important note is that Gi2MO IdeaStream ontology is not a complete model of the Idea Management System. It is an extension of the base Gi2MO ontology to adjust it to more compact deployments. For detailed instructions how to completely model Idea Management Systems with Gi2MO and other ontologies see homepage of the Gi2MO project.

1.1 Gi2MO Ontology, IdeaStream and data portability

The existing Gi2MO Ontology is a data schema that provides a very flexible and full description standard for Idea Management System data. It is a ideal model for publishing data online to consume by a variety of clients. However, in practice, the great verboseness of Gi2MO Ontology can be a drawback when attempting to process the entire dataset on devices where code optimization is a very important factor. IdeaStream ontology does not define any new concepts but is a fork of Gi2MO ontology that optimises its schema by adding properties that shorten the serialisation and simplify data parsing.

The notion of IdeaStream ontology is based on experiences with Gi2MO IdeaStream - an open-source Idea Management System. The requirements for the ontology come from development of various modules of IdeaStream as well as client applications for mobile devices (such as smartphones). The principal design goals of IdeaStream ontology are:

maximum hop to obtain any information about an entity from the knowledge graph should be no bigger than 1 reference from the class modelling that entity
the classes that are often serialised with only a single property should be eliminated and substituted with a new property in the referencing class

1.2 The Semantic Web

Gi2MO IdeaStream Ontology is based on technologies and design principles of the Semantic Web initiative. Semantic Web is a W3C undertaking that aims to introduce rich metadata to the current Web and provide machine readable and processable data as a supplement to human-readable Web.

Semantic Web is a mature domain that has been in research phase for many years and with the increasing amount of commercial interest and emerging products is starting to gain appreciation and popularity as one of the rising trends for the future Internet.

One of the corner stores of the Semantic Web is research on inter-linkable and interoperable data schemas for information published online. Those schemas are often referred to as ontologies or vocabularies. In order to facilitate the concept of ontologies that lead to a truly interoperable Web of Data, W3C has proposed a series of technologies such as RDF and OWL. Gi2MO uses those technologies and the research that comes within to propose an ontology set in the domain of Idea Management.

1.3 What is Gi2MO IdeaStream for?

The goals of the Gi2MO ontology to achieve as a data schema are:

enable to publish raw data from Idea Management Systems online and in compliance with current and future Internet trends
simplify the output serialisation of the base Gi2MO Ontology to cut down on file size as well as complexity
facilitate easier and faster data processing in devices where code optimization is critical (e.g. mobile devices or embedded software)

For more information please refer to Gi2MO project website.

1.4 How is Gi2MO IdeaStream different from regular Gi2MO Ontology?

The IdeaStream Ontology is an example of how to extend Gi2MO Ontology to provide very system specific metadata needed either to model innovative features of a particular IMS solution or for data optimisation goal (e.g. to cut down on knowledge processing time at the cost of less information).

In contrast, the base Gi2MO Ontology delivers a generic model for describing data of an Idea Management System. The ontology is based on a theoretical model that in practice allows to cover most elements of any Idea Management System. However, Gi2MO Ontology does not attempt to model the specifics of every exiting possible system and those to come in the future.

As a result, IdeaStream ontology contains the following:

supply properties that duplicate existing ones in Gi2MO ontology but are required for optimization for various implementations
supply properties that do not exist in Gi2MO ontology and are required only for a selected few implementations

The design principle of Gi2MO Ontology is flexibility, while the IdeaStream ontology is all about optimisation and improving processing speed. For more information please refer to Gi2MO project website.

2. Gi2MO IdeaStream ontology at a glance

An alphabetical index of Gi2MO IdeaStream terms, by class (concepts) and by property (relationships, attributes), are given below. All the terms are hyperlinked to their detailed description for quick reference.

Properties: commentCount, commentCountLastDay, commentCountLastMonth, commentCountLastWeek, commentCountLastYear, contestCount, contestCountLastDay, contestCountLastMonth, contestCountLastWeek, contestCountLastYear, ideaCount, ideaCountLastDay, ideaCountLastMonth, ideaCountLastWeek, ideaCountLastYear, reviewCount, reviewCountLastDay, reviewCountLastMonth, reviewCountLastWeek, reviewCountLastYear, userCount, userCountLastDay, userCountLastMonth, userCountLastWeek, userCountLastYear,

3. Gi2MO ontology overview

The Gi2MO UML diagram presented below shows connections between classes that implement the data model of Idea Management Systems.

UML Class Diagram for the Gi2MO IdeaStream Ontology (high resolution version: PNG)

3.1. Example

A very basic example below shows Idea Management System description with some statistics and their history over time:

<gi2mo:IdeaManagementSystem ref:about="http://ideas.gi2mo.org/tordf">
  	<dcterms:title>Gi2MO Ideas</dcterms:title>
  	<ideastream:ideaCount>103</ideastream:ideaCount>
  	<ideastream:commentCount>233</ideastream:commentCount>
  	<ideastream:contestCount>5</ideastream:contestCount>
  	<ideastream:reviewCount>246</ideastream:reviewCount>
  	
  	<gi2mo:hasIdea rdf:resource="http://ideas.gi2mo.org/node/2/tordf" />
  	<gi2mo:hasComment rdf:resource="http://ideas.gi2mo.org/node/3/tordf" />
  	<gi2mo:hasIdeaContest rdf:resource="http://ideas.gi2mo.org/node/4/tordf" />
  	<gi2mo:hasReview rdf:resource="http://ideas.gi2mo.org/node/5/tordf" />
  	
  	<ideastream:ideaCountLastDay>100</ideastream:ideaCountLastDay>
  	<ideastream:commentCountLastDay>232</ideastream:commentCountLastDay>
  	<ideastream:contestCountLastDay>5</ideastream:contestCountLastDay>
  	<ideastream:reviewCountLastDay>245</ideastream:reviewCountLastDay>
  	
  	<ideastream:ideaCountLastWeek>99</ideastream:ideaCountLastWeek>
  	<ideastream:commentCountLastWeek>230</ideastream:commentCountLastWeek>
  	<ideastream:contestCountLastWeek>5</ideastream:contestCountLastWeek>
  	<ideastream:reviewCountLastWeek>245</ideastream:reviewCountLastWeek>
  	
  	<ideastream:ideaCountLastMonth>90</ideastream:ideaCountLastMonth>
  	<ideastream:commentCountLastMonth>226</ideastream:commentCountLastMonth>
  	<ideastream:contestCountLastMonth>4</ideastream:contestCountLastMonth>
  	<ideastream:reviewCountLastMonth>240</ideastream:reviewCountLastMonth>
  	
  	<ideastream:ideaCountLastYear>37</ideastream:ideaCountLastYear>
  	<ideastream:commentCountLastYear>56</ideastream:commentCountLastYear>
  	<ideastream:contestCountLastYear>1</ideastream:contestCountLastYear>
  	<ideastream:reviewCountLastYear>98</ideastream:reviewCountLastYear>
  </gi2mo:IdeaManagementSystem>

4. Cross-reference for Gi2MO classes and properties

Below see a comprehensive list of all Gi2MO classes, properties and their descriptions.

Property: ideastream:commentCount

URI: http://purl.org/gi2mo/ideastream/ns#commentCount

commentCount - Number of comments connected to an entity (e.g. number of comments posted in ideas of a particular Idea Contest or number of comments a user has posted).

OWL Type:: DatatypeProperty
Domain:: gi2mo:User; gi2mo:IdeaContest; gi2mo:IdeaManagementSystem; gi2mo:Idea
Range:: xsd:int

Gi2MO IdeaStream Ontology Specification

V0.1 - 09 April 2012

Abstract

Table of Contents

Appendixes

1 Introduction

1.1 Gi2MO Ontology, IdeaStream and data portability

1.2 The Semantic Web

1.3 What is Gi2MO IdeaStream for?

1.4 How is Gi2MO IdeaStream different from regular Gi2MO Ontology?

2. Gi2MO IdeaStream ontology at a glance

3. Gi2MO ontology overview

3.1. Example

4. Cross-reference for Gi2MO classes and properties

Property: ideastream:commentCount

Property: ideastream:commentCountLastDay

Property: ideastream:commentCountLastMonth

Property: ideastream:commentCountLastWeek

Property: ideastream:commentCountLastYear

Property: ideastream:contestCount

Property: ideastream:contestCountLastDay

Property: ideastream:contestCountLastMonth

Property: ideastream:contestCountLastWeek

Property: ideastream:contestCountLastYear

Property: ideastream:ideaCount

Property: ideastream:ideaCountLastDay

Property: ideastream:ideaCountLastMonth

Property: ideastream:ideaCountLastWeek

Property: ideastream:ideaCountLastYear

Property: ideastream:reviewCount

Property: ideastream:reviewCountLastDay

Property: ideastream:reviewCountLastMonth

Property: ideastream:reviewCountLastWeek

Property: ideastream:reviewCountLastYear

Property: ideastream:userCount

Property: ideastream:userCountLastDay

Property: ideastream:userCountLastMonth

Property: ideastream:userCountLastWeek

Property: ideastream:userCountLastYear

A Changelog

2012-04-09

B Acknowledgements