fuzzy-logic-movies/engine.py

from simpful import *

FS = FuzzySystem()

# Define fuzzy sets for the variable # Define fuzzy sets for the variable 
# RELEASE_YEAR

# release_year_newer = FuzzySet(points=[[-68.0, 0.0],  [68.0, 1.0]], term="newer")
release_year_newer = TriangleFuzzySet(-68, -68, 0, term="newer")

# release_year_similar = FuzzySet(points=[[-68.0, 0.0],  [0.0, 1.0],  [68.0, 0.0]], term="similar")
release_year_similar = TriangleFuzzySet(-68, 0, 68, term="similar")

# release_year_older = FuzzySet(points=[[-68.0, 1.0], [68.0, 0.0]], term="older")
release_year_older = TriangleFuzzySet(0, 68, 68, term="older")

FS.add_linguistic_variable("RELEASE_YEAR", LinguisticVariable( [release_year_newer, release_year_similar, release_year_older], universe_of_discourse=[-136, 136] ))

# RUNTIME

# runtime_shorter = FuzzySet(points=[[-238.0, 0.0],  [238.0, 1.0]], term="shorter")
runtime_shorter = TriangleFuzzySet(-238, -238, 0, term="shorter")

# runtime_similar = FuzzySet(points=[[-238.0, 0.0],  [0.0, 1.0],  [238.0, 0.0]], term="similar")
runtime_similar = TriangleFuzzySet(-238, 0, 238, term="similar")

# runtime_longer = FuzzySet(points=[[-238.0, 1.0], [238.0, 0]], term="longer")
runtime_longer = TriangleFuzzySet(0, 238, 238, term="longer")

FS.add_linguistic_variable("RUNTIME", LinguisticVariable( [runtime_shorter, runtime_similar, runtime_longer], universe_of_discourse=[-476, 476] ))

# SEASONS

# seasons_less = FuzzySet(points=[[-42.0, 0.0],  [42.0, 1.0]], term="less")
seasons_less = TriangleFuzzySet(-42, -42, 0, term="less")

# seasons_similar = FuzzySet(points=[[-42.0, 0.0],  [0.0, 1.0],  [42.0, 0.0]], term="similar")
seasons_similar = TriangleFuzzySet(-42, 0, 42, term="similar")

# seasons_more = FuzzySet(points=[[-42.0, 1.0], [42.0, 0.0]], term="more")
seasons_more = TriangleFuzzySet(0, 42, 42, term="more")

FS.add_linguistic_variable("SEASONS", LinguisticVariable( [seasons_less, seasons_similar, seasons_more], universe_of_discourse=[-84, 84] ))

# GENRES

# genres_different = FuzzySet(points=[[-100.0, 0.0],  [100.0, 1.0]], term="different")
genres_different = TriangleFuzzySet(-100, -100, 0, term="different")

# genres_similar = FuzzySet(points=[[-100.0, 0.0],  [0.0, 1.0],  [100.0, 0.0]], term="similar")
genres_similar = TriangleFuzzySet(-100, 0, 100, term="similar")

# genres_same = FuzzySet(points=[[-100.0, 1.0], [100.0, 0.0]], term="same")
genres_same = TriangleFuzzySet(0, 100, 100, term="same")

FS.add_linguistic_variable("GENRES", LinguisticVariable( [genres_different, genres_similar, genres_same], universe_of_discourse=[-200, 200] ))

# EMOTIONS

# emotions_different = FuzzySet(points=[[-4.0, 0.0],  [4.0, 1.0]], term="different")
emotions_different = TriangleFuzzySet(-4, -4, 0, term="different")

# emotions_similar = FuzzySet(points=[[-4.0, 0.0],  [0.0, 1.0],  [4.0, 0.0]], term="similar")
emotions_similar = TriangleFuzzySet(-4, 0, 4, term="similar")

# emotions_same = FuzzySet(points=[[-4.0, 1.0], [4.0, 0.0]], term="same")
emotions_same = TriangleFuzzySet(0, 4, 4, term="same")

FS.add_linguistic_variable("EMOTIONS", LinguisticVariable( [emotions_different, emotions_similar, emotions_same], universe_of_discourse=[-8, 8] ))

FS.set_crisp_output_value("low_recomendation", 0)
FS.set_crisp_output_value("medium_recomendation", 50)
FS.set_crisp_output_value("high_recomendation", 100)

RULE1 = "IF (RELEASE_YEAR IS older) AND (RUNTIME IS longer) AND (SEASONS IS more) THEN (RECOMENDATION IS low_recomendation)"
RULE2 = "IF (EMOTIONS IS different) AND (GENRES IS different) THEN (RECOMENDATION IS low_recomendation)"
RULE3 = "IF (RELEASE_YEAR IS newer) AND (RUNTIME IS similar) AND (SEASONS IS less) THEN (RECOMENDATION IS medium_recomendation)"
RULE4 = "IF (EMOTIONS IS similar) AND (GENRES IS similar) THEN (RECOMENDATION IS medium_recomendation)"
RULE5 = "IF (RELEASE_YEAR IS similar) AND (RUNTIME IS similar) AND (SEASONS IS similar) AND (EMOTIONS IS same) AND (GENRES IS same) THEN (RECOMENDATION IS high_recomendation)"

FS.add_rules([RULE1, RULE2, RULE3, RULE4, RULE5])

FS.set_variable("RELEASE_YEAR", -12.0)
FS.set_variable("RUNTIME", -10.0)
FS.set_variable("SEASONS", -2.0)
FS.set_variable("GENRES", 50.0)
FS.set_variable("EMOTIONS", 1.0)

print(FS.inference(["RECOMENDATION"]))