Caliper / xapi Webinar

Transcription

1 Caliper / xapi Webinar 19 October 2016 Anthony Whyte arwhyte@umich.edu University of Michigan Aaron E. Silvers aaron@datainteroperability.org DISC

2 value proposition

3 Why xapi / Caliper? promote interoperability data / semantic controlled vocabularies Media Outcome Participation Social Credentials Annotation Assessment + enable innovation new service feed insights

4 Why xapi / Caliper?

5 current initiatives

6 xapi latest spec ADL LRS testing requirements ADL vocabulary New / updated profiles ADL Companion spec (semantic practices) beta conformance suite (imminent)

7 Hot off the wire, 18 Oct 2016 UK JISC national learning analytics service Unicon delivers: Staff Dashboard Alert & intervention system (SSP) Predictive analytics model Learning Analytics Processor (LAP) implements xapi source:

8 Caliper latest (1.1) doc rewrites event model revisions payload thinning spec impl guide ontology Discussion Forum Profile created deleted updated removed markedasread markedasunread posted subscribed unsubscribed { "sensor": " "sendtime": " T11:05:01.000Z", "data": [ { "@context": " "@type": " "actor": { "@id": " "@type": " }, "action": " "eventtime": " T10:15:00.000Z", "object": { "@id": " "@type": " } } ] } cert suite upgrade LTI integration sensor updates Sensor caliper-java caliper-js caliper-python caliper-php caliper-ruby caliper-net

9 Conversations Caliper xapi Caliper / xapi review meeting (Utah Valley University, Park City, UT, 15 Aug 2016)

10 profiles

11 So what s a profile? area of concern concepts relationships rules controlled vocabulary

12 xapi CoPs, profiles, recipes Communities of Practice augmented reality badges Chinese language CMI5 courses (SCORM) e-books healthcare education simulations social collaboration videos competencies & credentialing instructor professional development IEEE ADBook Assessment Attendance Checklist JISC recipes Open Badges CL Social Media Tin Can Prototypes CMI5 SCORM Bookmarklet Early Childhood Ed Medbiq Virtual Patient Self-Regulated Learning Tags Video

13 Caliper profiles Basic Assessment Forum Media Annotation current Reading Assignable Session Outcome Authoring Credentials Feedback Participation Problem Set future? QTI Search Simulation Social Survey Entity Mgmt... new entities? Badge Survey Location Problem Rating...

14 statements / events

15 Caliper event / xapi statement Caliper event actor action object eventtime id optional target generated referrer edapp group membership session federatedsession extensions xapi statement actor verb object id stored timestamp context result authority attachments version Caliper sourcedid and xapi id and stored property must be set by the LRS if not set by the event/statement emitter.

16 xapi statement

17 xapi statement: earning an Open Badge context actor Activity Person OB recipe OB image/png earned verb category (contextactivities) attachments OB badge class object OB Assertion OB class time stamp stored (set by LRS) result (extensions) source:

18 Caliper Event: basic statement Person actor action started Video Object object date time eventtime

19 Caliper Event: annotating a document session Person actor generated membership Membership epub federated session tagged action Tag Annotation role learner Document tags extensions object Course group time eventtime Reader edapp

20 API

21 xapi uses standard requests (HTTP GET, PUT, POST, DELETE) to an an LRS endpoint which always has these Resources event event statements Statement agents activities Agent Activity State About Learning Record Store state about

22 Caliper Sensor.send().send(events).describe(entities).getStatistics() event event event event event entity event store.describe() reading annotation assignable session outcome +... Caliper information model

23 Caliper/ LTI 1.x workflow tool consumer POST launch request + custom_caliper_profile_url, + custom_caliper_session_id tool provider CPS response apikey, eventstore.url, expirytime GET Caliper profile service (CPS) sensor config CPS declared in Tool Consumer Profile apikey scoped to Caliper profile URL; CPS should specify an expiry in order to avoid repeated lookups of apikey prior to expiration. Sensor CPS calls API Key service using SSL wire encryption & standard LTI credentials; call can be performed outside depicted sequence and the API key cached. GET Caliper API key service event store data stream secured using SSL wire encryption and tuple: apikey (header), sensor_id & session_id

24 convergence?

25 Challenges Culture / Governance models IP and licensing Open vs gated development Data model / exchange format differences

26 Opportunities (now) establish verb / action equivalencies establish linkages between common profiles develop xapi / Caliper data exchange mappings profile

27 final questions

28 finis (thanks)

29 extras (stuff for the director s cut)

30 xapi statement { "id": UUID, "actor": {<Agent> <Group>}, "verb": {<Verb>}, "object": {<Activity> <Agent> <Statement>}, "result": {<Result>}, "context": {<Object>}, "authority": {<Agent> <Group>}, "attachments": [ <Attachment>, <Attachment>... ], "timestamp": ISO 8601 timestamp", "stored": "ISO 8601 timestamp (set by LRS) }

31 Caliper Event { "@context": "@type": " "id": "local string identifier", "actor": {<Agent>}, "action": " "object": {<Entity>}, "eventtime": "ISO 8601 formatted datetime w/ millisecond precision", "target": {<Entity>}, "generated": {<Entity>}, "referrer": {<Entity>}, "edapp": {<SoftwareApplication>}, "group": {<Organization>}, "membership": {<Membership>}, "session": {<Session>}, "federatedsession": {<LtiSession>}, "extensions": {} } caliper.json { } "@context": {} mapping of terms

32 Caliper: custom event (hypothetical) statement actor Person action assign set Predicted Score generated edapp Goal scale assign object time eventtime + activity context { target referrer edapp group membership session federatedsession extensions

33 Caliper Sensor reference implementations caliper-java caliper-js Sensor API caliper-python caliper-php caliper-ruby caliper-net

34 Caliper/LTI: Blackboard / Kaltura POC Blackboard instrument Learn platform implement various Caliper profiles provision LTI tool launch with context info (user, course, content item) & endpoint security token design data visualization Kaltura instrument platform implement Caliper Media Profile extend spec with still watching event (measure drop off rate) emit event data to Blackboardspecified endpoint. Source: