Responsibilities in Organizations


Sketch of a logic for organizational structure and


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Responsibilities in organizations

3. Sketch of a logic for organizational structure and 
responsibilities 
The logical framework we need in order to provide a formal 
characterization of the concepts introduced in Section 2 
requires key expressivity capabilities for dealing with 
collective agency issues and with organizational structure 


issues. With respect to collective agency, expressions should 
be available to talk about: the performance of complex 
actions by agents and their effects (dynamic component); the 
obligations directed to agents (deontic component); the 
knowledge agents are endowed with (epistemic component). 
With respect to organizational structure issues, the relevant 
expressions concern essentially the possibility to represent 
relational structures depicting respectively the power, the 
coordination and the control structures (relational 
component). In this work we avoid to mention any technical 
aspect of the framework, limiting ourselves to a description 
of the language and its expressivity. For an exposition of the 
semantics, which is quite rich, we refer the reader to the 
work we exposed in Grossi, Dignum, Royakkers and Dastani 
(2005), and Grossi, Dignum, Royakkers and Meyer (2004). 
In what follows we provide a list of the family of expressions 
available which will be used in Section 4, providing an 
intuitive reading of them which suggest their underlying 
semantics. As we will see, each expression is parameterized 
by or concerns either an agent or a role. The sets of agent 
identifiers and of role identifiers are denoted, respectively, by 
Ag (agents) and RA (role agents). More in particular, in the 
system it is possible to express and reason about: 
• 
A set of agents Ag and a set of roles RA 
• 
Dynamic formulas such as [α
i
]φ, meaning that after 
each execution of α
i
formula φ holds, where α
i
is a 
parameterized construct of the type i:α denoting the 
performance of action α by agent i, or a composed 
construct such as: i
1
j
2
(subsequent 
performance), i
1
j
2
(parallel performance), 
i:α (i refrains from performing α).
2
 
• 
Assertions such as “α has just been performed by 
agent i” (DONE(i:α)), “α is going to be the next 
action performed by agent i” (DO(i:α)), and “α lies 
in the capabilities of agent i” (CAN
i
(α)). 
• 
Epistemic assertions to the effect that agent i 
knows that φ (K
i
(φ)), and deontic assertions to the 
effect that agent i ought to perform action α 
(O(i:α)). 
• 
Special propositions: Power(r,s) which indicate 
that ‘the agent enacting role r has the agent 
enacting role s in its power’ (i.e., the agent playing 
role r can delegate tasks to the agent playing role 
s), Coordination(r,s) which indicate that ‘the agent 
enacting role s has access to the information 
accessed by the agent enacting role r’, and 
Control(r,s) which indicate that ‘the agent enacting 
role r controls the agent enacting role s’ (i.e., the 
agent playing role r is responsible for the agent 
playing role s). Note that relations are defined on 
roles, i.e., on members of RA. We denote the fact 
that agent enacts role r, by the special proposition 
rea(i,r). 
The semantics of these expressions is obtained by mixing the 
semantics of the collective action logic we developed in 
Grossi, Dignum, Royakkers and Meyer (2004). with a graph-
theoretical semantics modeling the organizational structures 
that can be represented via the special propositions 
Power(r,s), Coordination(r,s), Control(r,s) and rea(i,r)
3
 
which we presented in Grossi, Dignum, Royakkers and 
Dastani (2005). 

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