Real-Time Safety Risk Assessment Based on a Real-Time Location System for Hydropower Construction Sites

Pseudocode 1

INPUT: 𝑦_𝑡,𝜆 (the observation symbol at time 𝑡, the hidden Markov model)

OUTPUT: {𝑝^𝑤_𝑡(𝑖)} (the safety state probability distribution at time 𝑡)

START:

   if  𝑡=1  then

    for  𝑖=1  to  𝑀  do

     𝑢₁(𝑖)←𝑞_𝑖(𝑦₁)𝜋_𝑖

   𝑝^𝑤₁𝑞(𝑖)←^𝑖(𝑦₁)𝜋_𝑖∑^𝑀_𝑗=1𝑞_𝑗(𝑦₁)𝜋_𝑗

    next  𝑖

   else

    for  𝑖=1  to  𝑀  do

     𝑢_𝑡(𝑖)←𝑞_𝑖𝑦∑_𝑡^𝑀_𝑗=1𝑢_𝑡−1(𝑗)𝑝_𝑖𝑗

     𝑝^𝑤_𝑡𝑢(𝑖)←^𝑡(𝑖)∑^𝑀_𝑗=1𝑢_𝑡(𝑗)

     next  𝑖

     end  if

   return  {𝑝^𝑤_𝑡(𝑖)}

END