05 Apr 2016 R. Andres Ferreyra (Unlicensed): Having assembled a long, somewhat arbitrary list of contexts, I think we can more effectively capture semantics with 2-3 attributes instead of a single DateContext attribute. See Valid Compositions table below.

Some challenges:

Not all possible compositions are "valid".
Any given "valid" composition (except perhaps for "(Actual)Create" and "(Actual)Modify)" is usable in only a subset of the TimeScope-bearing classes in ADAPT.
Should we build some kind of knowledge representation system to capture all of this?
- The proposed SPADE3 ContextItemDefinition class has the concept of "Properties" that we could use to bring along the multiple attributes of any given DateContext.
- Another possibility is to build a separate artifact to manage this, such as an ontology.

Instantaneous

Modifier: Planned, Proposed, Requested, Estimated, Actual

08 Apr 2016 note: ISO's list of type of the recorded time, possible values:

1 = Planned

2 = Preliminary

3 = Preparation

4 = Effective

5 = Ineffective

6 = Repair

7 = Clearing

8 = Powered Down ^c

Context: Approve, Expire, Observe, Start, End, Load, Unload, Resume, Ship, Suspend, Calibrate, Create, Modify

Interval

Modifier: None

Context: CropSeason, Timing Interval, ValidityRange, ActivityRange

Valid Compositions

	Planned	Proposed	Requested	Estimated	Actual / Effective
Approve
Expire
Observe/ Measure
Start
End
Load
Unload
Suspend
Resume
Ship
Calibrate
Create
Modify
Unspecified

CurrentList

Context	Type	Attachable to	Comments
CropSeason	Interval	Document, Grower/Farm/Field/CZ, PersonRole
TimingEvent	Interval	Document, Grower/Farm/Field/CZ, PersonRole
ValidityRange	Interval	Catalog, Setup data in general
Approval	Instant	Work Order
Expiration	Instant	Recommendation WorkOrder Document	General usage on Document use case: Permits
PlannedStart	Instant	Plan
PlannedEnd	Instant	Plan
ProposedStart	Instant	Recommendation
ProposedEnd	Instant	Recommendation
RequestedStart	Instant	Work Order
RequestedEnd	Instant	Work Order
ActualStart	Instant	Work Record
ActualEnd	Instant	Work Record
Resume	Instant	WorkRecord LoggedData OperationData
Suspend	Instant	WorkRecord LoggedData OperationData
Load	Instant		Load/ProductAllocation/ContainerUse
Unload	Instant		Load/ProductAllocation/ContainerUse
RequestedShipping	Instant
ActualShipping	Instant
Calibration	Instant
Creation	Instant	All
Modification	Instant	All
Unspecified	Instant

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