Research Article

Estimation Algorithm of Machine Operational Intention by Bayes Filtering with Self-Organizing Map

Table 4

List of variables.

Symbols Designation Types/range/definition

Bayes normalization parameter Real number
Operation mode for crawlers
Operation mode for the arm of the excavator
Operation mode for the bucket of the excavator
Operation mode for the superstructure rotation of the excavator
Commands to the machine from an operator Scalar integer
Value corresponding to an operational command which is registered in th reference vector of Real number
Random value having standard deviation Real number
Belief of the intention (probabilistic distribution of ) Vector with real numbers
Prediction at time (a predicted belief) Vector with real numbers
Node index of th particle’s BMN on
Node index of whose reference vector is most close to a combination of the measured command and the predicted status
Index for a particle Integer
Number of nodes whose is close to Integer
Number registered in the th element of the array (a particle number) Integer
Length of the roulette array (this is variable on each time counter) Integer
Machine status (M-status) Vector with real numbers
Environmental status (E-status) Vector with real numbers
Task status (T-status) Vector with real numbers
Random number
Information recognized by a human operator Vector with real numbers
Random sample point around Vector with real numbers
Time counter Integer
Coordinate value corresponding to the node on the plane map Integers
Measurement probability corresponding to th predicted particle at time Real number
Operational intention of a human Vector in
Average of operator’s intention level discerned by eight human analysts Vector in
Intentions identified by the SOM-Bayes estimator (Average of the identified intentions given by particles) by (15)
Intention discerned by a human analyst Vector in
th element of vectors ( th intention mode) Real number
th particle of the set ( ) Vector with real numbers
Prediction at time by th particle by (10)
Concordance ratio with respect to time on th intention mode (time-concordance ratio)
Concordance ratio with respect to strength on th intention mode (strength-concordance ratio)
Time-concordance ratio against average intention of eight analysts’ discrimination on th intention mode
Strength-concordance ratio against average intention of eight analysts’ discrimination on th intention mode.
Square-like area on the plane map around the node of
Roulette array Size is variable
Set of particles at time Set of vector