It links an entity (e.g., a Person) to a particular ValueInTime situation;
has value
It links to the specific context within which the fact of the entity having the value is relevant.
within context
time-indexed value in context
A pattern for the description of scenarios that involve entities having some value during a particular time and within a particular context.
Sometimes, we need to describe scenarios in which someone (e.g., a person) has a value (e.g., a particular role) during a particular time and for a particular context. Four different things are involved in these kinds of scenarios: 1. the entity having some value, e.g. a person or a document possessing a role or a status; 2. the value had by someone, e.g. a role or a status; 3. the time period during which the entity has that value, e.g. from April 2008 to September 2008; 4. the particular context that characterises the act of having that value, e.g. being a member of an institution or an editor of a particular journal. Thought as natural extension of the Time-indexed Situation pattern (http://ontologydesignpatterns.org/wiki/Submissions:TimeIndexedSituation), this ontological pattern, called Time-indexed Value in Context (TVC), is able to describe these kinds of scenarios.
The Time-indexed Value in Context
Having the role "graduate student" in a specific time (e.g., now) and context (e.g., "University of Bologna").
It defines a particular kind of time-indexed situation that represents a hub linking the entity having a particular value, the value itself and the temporal and contextual extents from which the entity-value relationship depends.
value in time
It specifies the particular temporal instant or time period in which the situation takes place.
It holds the value had by the entity taking part to the situation.
with value