The ADL Initiative Total Learning Architecture: 2018 Reference Implementation Specifications and Standards Advanced Distributed Learning (ADL) 1901 N. Beauregard St., Suite 600 Alexandria, VA 22311 May 2019 This work was supported by the U.S. Advanced Distributed Learning (ADL) Initiative W900KK-17-D-0004. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the ADL Initiative or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes. DISTRIBUTION STATEMENT A. Approved for public release. 1 The ADL Initiative – May 2019 TABLE OF CONTENTS 1. Introduction ............................................................................................................................................... 1 1.1 Future Learning Ecosystem ............................................................................................................ 2 1.2 Specifications and Standards .......................................................................................................... 2 1.3 2018 TLA Reference Implementation ............................................................................................ 3 1.4 2018 TLA Test and Demonstration ................................................................................................ 7 1.5 2018 Data Analytics and Visualization .......................................................................................... 8 2. TLA Specifications and Standards ............................................................................................................ 9 2.1 Activity Registry ........................................................................................................................... 10 2.1.1 Learning Resource Metadata Initiative (LRMI) ...................................................................... 10 2.1.2 IEEE 1484.12.1 Learning Object Model (LOM) ..................................................................... 11 2.1.3 Dublin Core Metadata Initiative (DCMI) Metadata................................................................ 12 2.1.4 Schema.org Vocabularies ........................................................................................................ 12 2.2 Activity Streams ........................................................................................................................... 13 2.2.1 Experience API (xAPI) ............................................................................................................. 14 2.2.2 IMS Global Caliper ................................................................................................................. 14 2.2.3 W3C Activity Streams 2.0 ........................................................................................................ 15 2.2.4 SISO Human Performance Markup Language (HPML).......................................................... 15 2.3 Competency Management ............................................................................................................ 16 2.3.1 Achievement Standards Network™ (ASNTM) ......................................................................... 17 2.3.2 Competencies and Academic Standards Exchange™ (CASE™) ............................................ 17 2.3.3. O*Net ...................................................................................................................................... 18 2.3.4 MedBiquitous Competency Framework ................................................................................... 19 2.3.5 IEEE 1484.20.1 Reusable Competency Definitions (RCD) ..................................................... 19 2.4 Credentials .................................................................................................................................... 19 2.4.1 Credential Transparency Description Language (CTDL) ....................................................... 21 2.4.2 Credential Registry .................................................................................................................. 21 2.4.3 IMS Global Open Badges ........................................................................................................ 21 2.4.4. W3C Verifiable Claims ........................................................................................................... 21 2.5 Learner Profile .............................................................................................................................. 21 2.5.1. Comprehesive Learner Record (CLR) .................................................................................... 22 2.5.2. Learner Information Package (LIP) ....................................................................................... 22 2.5.3. IEEE Public and Private Informaiton for Learners (PAPI Learner) ..................................... 23 2.5.4. Airmen Learning Record (ALR) .............................................................................................. 23 2.6 Recommendation Engine .............................................................................................................. 24 2.6.1. Fast Learning from Unlabeled Episodes for Next-Generation Tailoring (FLUENT) ............ 24 2.6.2. Navigator for Integrated Learning Environments (NILE) ...................................................... 24 2.6.3. Adaptive Instructional Sciences – IEEE (C/LT/AIS) P2247.1 ................................................ 25 2.7 Launch Service ............................................................................................................................. 25 2.7.1. xAPI Launch ........................................................................................................................... 25 2.7.2. cmi5 ......................................................................................................................................... 25 2.8 Assessment Service....................................................................................................................... 25 2.8.1. cmi5 ......................................................................................................................................... 25 2.9 Identity Management .................................................................................................................... 26 2.9.1. Privacy and Security for TLA (PS4TLA) ................................................................................ 28 2.10 Miscellaneous ............................................................................................................................. 27 2.10.1. Learning Tools Interoperability (LTI) .................................................................................. 27 2.10.2. Open Pathways ..................................................................................................................... 27 2.10.3. Sharable Content Object Reference Model (SCORM)) ........................................................ 27 2.10.4. IEEE Actionable Data Book (ADB) ...................................................................................... 27 2.10.5. ePub ...................................................................................................................................... 28 2.10.6. IEEE P1589 Augmented Reality Learning Experience Models (ARLEM) ........................... 28 3. 2018 TLA Reference Implementation .................................................................................................... 29 3.1 Logical Architecture ..................................................................................................................... 29 3.2 Physical Architecture .................................................................................................................... 30 3.3 System Components ..................................................................................................................... 33 3.3.1. Activity Registry ...................................................................................................................... 33 3.3.2. xAPI Activity Streams ............................................................................................................. 34 3.3.3. Learner Record Store .............................................................................................................. 34 3.3.4. Competency Management System ........................................................................................... 34 3.3.5. Learner Profile ....................................................................................................................... 35 3.3.6. Recommendation Engine ........................................................................................................ 35 3.3.7. Single Sign On ........................................................................................................................ 36 3.4 Concept of Execution.................................................................................................................... 36 3.5 Interface Design ............................................................................................................................ 38 3.5.1 Interface Identification and Diagrams..................................................................................... 38 3.5.2 Advanced Message