fis is a simple fuzzy inference system library. It supports Lua >= 5.3.
First require the module to access its core objects:
local fis = require 'fis.init'
local fn = fis.Membership
local E = fis.Engine
local V = fis.Variables
local T = fis.Terms
local If = fis.Rules.build_rule
local P = fis.Propositions.create_propositionTo build a fuzzy inference system, start by creating an engine object:
local engine = E{name = 'inference engine'}Add input and output variables:
local fuzzy_input = engine:add_input( V('input variable', 0, 10, 101) )
:add_term(T('input term', fn.trimf, {0, 0, 5}))
local fuzzy_output = engine:add_output( V('output variable', 0, 10, 101) )
:add_term(T('output term', fn.trapmf, {0, 0, 5, 10}))And finally, reference your variables to create the rules:
local fuzzy_rules = engine:add_rules{
If( P(fuzzy_input, 'input term') ).Then{{ fuzzy_output, 'output term' }},
...
}This software is licensed under MIT.