eLSE (eLearning for Software Engineering) S. Stojanov ECL, University of Plovdiv

Topics CBT & eLearning Projects‘ overview Objectives of eLSE? Implementation approach eLSE development environment & Tools Conclusion

Computer Based Training eLearningSemantic Web Time/place/content predeterminated learning Just-in-time/at-work-place/ customized/on-demand process of learning Ontology-based annotation of learning materials, common-shared-meaning, machine-processable metadata “Through the Internet, education will become learner- and goal-oriented rather than faculty-centered” Lesser, Klein, MIT CBT & eLearning

Projects‘ overview eLSE COMMERCE eLPortal CBRFrameworkeSArchitecture BULCHINOTestPortal DeLC

Main objectives System infrastructure for eLearning and distance learning in software engineering Methodology for creation of e-content in SE – best practices (CM University – Development Guide …) SCORM-compliant e-content Integration of eLSE in DeLC infrastructure Multilingual

LOs Transfor mation SE-Editor S-Bahn Tool Glossary SE R- Editor SEnew (.ppt) SEold (.ppt) static SCORM (basic version) SE (SCORM) Version n Mod static SCORМ + S & N Approach eLSE development environment

Implementation steps Restructuring – the basic learning elements of the lecture course are extracted and restructured in suitable learning objects Generation of local objects – local copies of learning objects can be generated through the S- Bahn-Tool Usage of Glossary – for generation of local copies we can use a dictionary 1 2 3

Implementation steps LOs Transformation (Tools) – learning objects are transformed in SCORM format (static) Generation of basic (static) SCORM version – the basic SCORM version is build from the existing learning objects (creating of manifest files) SE-Editor – the static SCORM version can be edited by help of SE-Editor 4 5 6

Implementation steps Modification of static SCORM – the static SCORM version can be further updated (additional learning objects can be integrated, existing objects can be deleted, …) Creation of dynamic SCORM version – to the static SCORM version sequencing and navigation information can be added Generation of the next SCORM versions – next versions can be generated from the first e-content version 7 8 9

First version Supports the eLearning-orieted CBT in SE Start point – existing JCSE content (.ppt) Manual restructuring of the existing JCSE content (.ppt) S & N - manual generation & inclusion Partly eLSE development environment Tools: Transformation Tools Reload-Editor (Reload – UK company in the field of eLearning) S-Bahn-Tool

Second version Supports eLearning in SE Start point – LOs & SCORM-compliant content 3-layered architecture: eLSE editors Transformators SCORM generators Full eLSE development environment: Domain (SE) – oriented intelligent editors Protege-based (plug-ins) Reload-based generators Education Patterns & Frameworks

Ontologies Formal models of a domain Shared (internet, between groups) Common modeling constructs Classes Properties Logic / Meaning Individuals Can be used to define domain- specific modeling languages

Web Ontology Language (OWL) W3C Standard Based on RDF(S) Ontologies are shared on the web Explicit support for linking ontologies Built-in reasoning support based on Description Logics Rule-based extension SWRL

Protégé Open-Source ontology editing tool Developed at Stanford Medical Informatics with help from community Evolves since the 1980s In routine use around the world Traditional domain: Biomedicine General-purpose tool and platform

Protégé and OWL Core System (since 1990s) Generic metamodel (OKBC) Configurable Open platform with “Plugins” OWL Plugin (since 2003) OWL Full metamodel Optimized user interface Built-in reasoning access Several thousand users

OWL Plugin Background OWL Plugin started in 2003 Major sources of Funding: NLM, NCI Goals (Achievements): Comprehensive support for OWL DL & Full Editing and visualizing OWL/RDF ontologies Integration of DL reasoners (classification) Open platform for Semantic Web community

Ontology Development Organization (Concept) Person (Concept) Event (Concept) TerroristEvent (Sub-concept)

Classes / Logic View

Classes / Properties View

Editing Properties

Editing Individuals

Configuring Forms

Classifying Individuals

An Open-Source Platform Available for free Transparent behavior / semantics Flexible “Plugin” mechanism New user interface components New file formats New reasoners... (your application here) 80+ plugins publicly available

Visualization – Example 1

Visualization – Example 2

Visualization – Example 3

Visualization – Example 4

Visualization – Example 5

Visualization – Example 6

Input - Output Formats Default: Text files Available backend plugins OWL / RDF OWL Databases RDF XML / XML Schema UML (OWL-UML bridge work in progress)

Other Plugins / OWL Wizard

Other Plugins / Prompt

Multi-User Mode Client-Server setup Central database Clients with user interface Changes are synchronized immediately Scalable

Protégé Web Browser

Protégé - summary An open-source ontology tool platform De-facto standard OWL editor Comprehensive OWL / RDF support Configurable visual editors Built-in reasoning capabilities Many plugins for visualization etc.

Conclusion - tasks for the next year: Partly implementation of the first version – only selected topics: Restructuring of selected topics – building LOs Topics as net structures of LOs Confirmation of the LOs – eventually the same approach as preparation of topics (reviews) Selection of SCORM transformation tool - (LNR- Toolkit, Theses,...)

Conclusion - tasks for the next year: Concept for the second version: SE ontologies – LOs as concepts:  Upper ontology  Mid-level ontology  Domain-ontology DB structure – keeping of the LOs Interfaces between ontologies and DB Using and adapting of Protégé – approproate plug-ins

Possible development environment? Protégé eLSE plugin Sam’s S-Bahn-Tool Keti’s multilingual dictionary