Page 88 - Artificial Intelligence for the Internet of Everything
P. 88

74    Artificial Intelligence for the Internet of Everything


          wanted to understand how intelligent adaptive behaviors are related to the
          formal dynamics and structures among agents. We studied how organiza-
          tional structure influences the processes of searching for sets of good deci-
          sions and stabilizing around good decisions once they are discovered
          (Rivkin & Siggelkow, 2003). The search and stability issues are conceptually
          identical to the exploration-exploitation tradeoffs afforded by free-energy
          minimization, allowing us to examine the alignments between energy-based
          computational mechanisms and discrete human decision-making processes
          analyzed by Rivkin and Siggelkow.
             Second, we posit that the free-energy principle explains the empirically
          observed behaviors of business organizations. Unlike network-based theo-
          ries of cities (e.g., Schl€apfer et al., 2014), which are developed and tested
          using extensive quantitative data about social and economic transactions,
          development of behavior models for business organizations has lagged
          behind since the data on operations of business enterprises (e.g., communi-
          cation channels, personnel assignments, and task outcomes) is often propri-
          etary and not available. However, it has been empirically observed that as
          companies mature and grow, they attempt to maximize profits (utility) at
          the expense of innovation (entropy, disruption or disorder), placing increas-
          ing emphasis on rules, regulations, and other forms of bureaucratic control
          over its members, impeding market adjustments and leading to their even-
          tual demise (West, 2017). The free-energy principle explains how placing
          more emphasis on utility versus entropy makes the system brittle and unable
          to adapt to a changing environment.
             Finally, we wanted to identify what implications the free-energy mini-
          mization principle had on the design of agents that constitute the effective
          members of a high-performance team.
          4.3.2 Problem Definition

          The formal definition of a distributed decision-making problem (Rivkin &
          Siggelkow, 2003) is as follows. Assume that a team of M agents seeks an N-
          dimensional binary decision vector d¼[d 1 ,…,d N ], where d i 2{0,1}, to
          maximize its additive objective function, i.e.,
                             ∗                X   P
                            d ¼ arg max C d ðÞ ¼    c j d j ,
                                                  j¼1
                                      N
                                d2 0, 1g
                                  f
          where d j is a subset of decision variables, and P is the number of these
          subsets. Component reward functions c j (d j ) encode dependencies between
          decisions in subset d j (such as local and team-level rewards). The general
   83   84   85   86   87   88   89   90   91   92   93