- Several bugfixes

- Issue #2 - PEP 8 compliance
  - Issue #3 - Code documentation with PEP 257 compliance

__init__.py

@@ -0,0 +1,3 @@
+"""
+pyFTS - A Python library for Fuzzy Time Series models 
+"""

benchmarks/Measures.py

@@ -1,12 +1,21 @@
 # -*- coding: utf8 -*-
 
+"""
+pyFTS module for common benchmark metrics
+"""
+
 import numpy as np
 import pandas as pd
 from pyFTS.common import FuzzySet,SortedCollection
 
 
-# Autocorrelation function estimative
 def acf(data, k):
+    """
+    Autocorrelation function estimative
+    :param data: 
+    :param k: 
+    :return: 
+    """
     mu = np.mean(data)
     sigma = np.var(data)
     n = len(data)
@@ -17,22 +26,45 @@ def acf(data, k):
     return 1/((n-k)*sigma)*s
 
 
-# Erro quadrático médio
 def rmse(targets, forecasts):
+    """
+    Root Mean Squared Error
+    :param targets: 
+    :param forecasts: 
+    :return: 
+    """
     return np.sqrt(np.nanmean((targets - forecasts) ** 2))
 
 
 def rmse_interval(targets, forecasts):
+    """
+    Root Mean Squared Error
+    :param targets: 
+    :param forecasts: 
+    :return: 
+    """
     fmean = [np.mean(i) for i in forecasts]
     return np.sqrt(np.nanmean((fmean - targets) ** 2))
 
 
-# Erro Percentual médio
 def mape(targets, forecasts):
+    """
+    Mean Average Percentual Error
+    :param targets: 
+    :param forecasts: 
+    :return: 
+    """
     return np.mean(np.abs(targets - forecasts) / targets) * 100
 
 
 def smape(targets, forecasts, type=2):
+    """
+    Symmetric Mean Average Percentual Error
+    :param targets: 
+    :param forecasts: 
+    :param type: 
+    :return: 
+    """
     if type == 1:
         return np.mean(np.abs(forecasts - targets) / ((forecasts + targets)/2))
     elif type == 2:
@@ -46,8 +78,13 @@ def mape_interval(targets, forecasts):
     return np.mean(abs(fmean - targets) / fmean) * 100
 
 
-# Theil's U Statistic
 def UStatistic(targets, forecasts):
+    """
+    Theil's U Statistic
+    :param targets: 
+    :param forecasts: 
+    :return: 
+    """
     l = len(targets)
     naive = []
     y = []
@@ -57,8 +94,13 @@ def UStatistic(targets, forecasts):
     return np.sqrt(sum(y) / sum(naive))
 
 
-# Theil’s Inequality Coefficient
 def TheilsInequality(targets, forecasts):
+    """
+    Theil’s Inequality Coefficient
+    :param targets: 
+    :param forecasts: 
+    :return: 
+    """
     res = targets - forecasts
     t = len(res)
     us = np.sqrt(sum([u**2 for u in res]))
@@ -67,8 +109,13 @@ def TheilsInequality(targets, forecasts):
     return  us / (ys + fs)
 
 
-# Q Statistic for Box-Pierce test
 def BoxPierceStatistic(data, h):
+    """
+    Q Statistic for Box-Pierce test
+    :param data: 
+    :param h: 
+    :return: 
+    """
     n = len(data)
     s = 0
     for k in np.arange(1,h+1):
@@ -77,8 +124,13 @@ def BoxPierceStatistic(data, h):
     return n*s
 
 
-# Q Statistic for Ljung–Box test
 def BoxLjungStatistic(data, h):
+    """
+    Q Statistic for Ljung–Box test
+    :param data: 
+    :param h: 
+    :return: 
+    """
     n = len(data)
     s = 0
     for k in np.arange(1,h+1):
@@ -87,21 +139,21 @@ def BoxLjungStatistic(data, h):
     return n*(n-2)*s
 
 
-# Sharpness - Mean size of the intervals
 def sharpness(forecasts):
+    """Sharpness - Mean size of the intervals"""
     tmp = [i[1] - i[0] for i in forecasts]
     return np.mean(tmp)
 
 
-# Resolution - Standard deviation of the intervals
 def resolution(forecasts):
+    """Resolution - Standard deviation of the intervals"""
     shp = sharpness(forecasts)
     tmp = [abs((i[1] - i[0]) - shp) for i in forecasts]
     return np.mean(tmp)
 
 
-# Percent of
 def coverage(targets, forecasts):
+    """Percent of"""
     preds = []
     for i in np.arange(0, len(forecasts)):
         if targets[i] >= forecasts[i][0] and targets[i] <= forecasts[i][1]:
@@ -133,8 +185,8 @@ def heavyside_cdf(bins, targets):
     return df
 
 
-# Continuous Ranked Probability Score
 def crps(targets, densities):
+    """Continuous Ranked Probability Score"""
     l = len(densities.columns)
     n = len(densities.index)
     Ff = pmf_to_cdf(densities)

benchmarks/__init__.py

@@ -0,0 +1,3 @@
+"""
+pyFTS module for benchmarking the FTS models
+"""

benchmarks/arima.py

@@ -7,11 +7,14 @@ from pyFTS import fts
 
 
 class ARIMA(fts.FTS):
+    """
+    Façade for statsmodels.tsa.arima_model
+    """
     def __init__(self, order, **kwargs):
         super(ARIMA, self).__init__(1, "ARIMA")
         self.name = "ARIMA"
         self.detail = "Auto Regressive Integrated Moving Average"
-        self.isHighOrder = True
+        self.is_high_order = True
         self.model = None
         self.model_fit = None
         self.trained_data = None
@@ -19,7 +22,7 @@ class ARIMA(fts.FTS):
         self.d = 0
         self.q = 0
         self.benchmark_only = True
-        self.minOrder = 1
+        self.min_order = 1
 
     def train(self, data, sets, order=1, parameters=None):
         if parameters is not None:

benchmarks/naive.py

@@ -5,12 +5,13 @@ from pyFTS import fts
 
 
 class Naive(fts.FTS):
+    """Naïve Forecasting method"""
     def __init__(self, order, name, **kwargs):
         super(Naive, self).__init__(1, "Naive " + name)
         self.name = "Naïve Model"
         self.detail = "Naïve Model"
         self.benchmark_only = True
-        self.isHighOrder = False
+        self.is_high_order = False
 
     def forecast(self, data, **kwargs):
         return [k for k in data]

benchmarks/quantreg.py

@@ -8,13 +8,14 @@ from pyFTS import fts
 
 
 class QuantileRegression(fts.FTS):
+    """Façade for statsmodels.regression.quantile_regression"""
     def __init__(self, order, **kwargs):
         super(QuantileRegression, self).__init__(1, "QR")
         self.name = "QR"
         self.detail = "Quantile Regression"
-        self.isHighOrder = True
+        self.is_high_order = True
-        self.hasPointForecasting = True
+        self.has_point_forecasting = True
-        self.hasIntervalForecasting = True
+        self.has_interval_forecasting = True
         self.benchmark_only = True
         self.minOrder = 1
         self.alpha = 0.5

common/FLR.py

@@ -1,9 +1,18 @@
 import numpy as np
 from pyFTS.common import FuzzySet
 
+"""
+This module implements functions for Fuzzy Logical Relationship generation 
+"""
 
 class FLR(object):
+    """Fuzzy Logical Relationship"""
     def __init__(self, LHS, RHS):
+        """
+        Creates a Fuzzy Logical Relationship
+        :param LHS: Left Hand Side fuzzy set
+        :param RHS: Right Hand Side fuzzy set
+        """
         self.LHS = LHS
         self.RHS = RHS
 
@@ -12,7 +21,14 @@ class FLR(object):
 
 
 class IndexedFLR(FLR):
+    """Season Indexed Fuzzy Logical Relationship"""
     def __init__(self, index, LHS, RHS):
+        """
+        Create a Season Indexed Fuzzy Logical Relationship
+        :param index: seasonal index 
+        :param LHS: Left Hand Side fuzzy set
+        :param RHS: Right Hand Side fuzzy set
+        """
         super(IndexedFLR, self).__init__(LHS, RHS)
         self.index = index
 
@@ -21,6 +37,11 @@ class IndexedFLR(FLR):
 
 
 def generateNonRecurrentFLRs(fuzzyData):
+    """
+    Create a ordered FLR set from a list of fuzzy sets without recurrence
+    :param fuzzyData: ordered list of fuzzy sets
+    :return: ordered list of FLR 
+    """
     flrs = {}
     for i in range(2,len(fuzzyData)):
         tmp = FLR(fuzzyData[i-1],fuzzyData[i])
@@ -30,6 +51,11 @@ def generateNonRecurrentFLRs(fuzzyData):
 
 
 def generateRecurrentFLRs(fuzzyData):
+    """
+    Create a ordered FLR set from a list of fuzzy sets with recurrence
+    :param fuzzyData: ordered list of fuzzy sets
+    :return: ordered list of FLR 
+    """
     flrs = []
     for i in np.arange(1,len(fuzzyData)):
         flrs.append(FLR(fuzzyData[i-1],fuzzyData[i]))
@@ -37,6 +63,13 @@ def generateRecurrentFLRs(fuzzyData):
 
 
 def generateIndexedFLRs(sets, indexer, data):
+    """
+    Create a season-indexed ordered FLR set from a list of fuzzy sets with recurrence
+    :param sets: fuzzy sets
+    :param indexer: seasonality indexer 
+    :param data: original data
+    :return: ordered list of FLR 
+    """
     flrs = []
     index = indexer.get_season_of_data(data)
     ndata = indexer.get_data(data)

common/FuzzySet.py

@@ -4,7 +4,17 @@ from pyFTS.common import Membership
 
 
 class FuzzySet:
+    """
+    Fuzzy Set
+    """
     def __init__(self, name, mf, parameters, centroid):
+        """
+        Create a Fuzzy Set 
+        :param name: fuzzy set name
+        :param mf: membership function
+        :param parameters: parameters of the membership function
+        :param centroid: fuzzy set center of mass
+        """
         self.name = name
         self.mf = mf
         self.parameters = parameters
@@ -17,6 +27,11 @@ class FuzzySet:
             self.upper = parameters[0] + parameters[1]*3
 
     def membership(self, x):
+        """
+        Calculate the membership value of a given input
+        :param x: input value 
+        :return: membership value of x at this fuzzy set
+        """
         return self.mf(x, self.parameters)
 
     def __str__(self):
@@ -24,11 +39,23 @@ class FuzzySet:
 
 
 def fuzzyInstance(inst, fuzzySets):
+    """
+    Calculate the membership values for a data point given fuzzy sets
+    :param inst: data point
+    :param fuzzySets: list of fuzzy sets
+    :return: array of membership values
+    """
     mv = np.array([fs.membership(inst) for fs in fuzzySets])
     return mv
 
 
 def fuzzyInstances(data, fuzzySets):
+    """
+    Calculate the membership values for a data point given fuzzy sets
+    :param inst: data point
+    :param fuzzySets: list of fuzzy sets
+    :return: array of membership values
+    """
     ret = []
     for inst in data:
         mv = np.array([fs.membership(inst) for fs in fuzzySets])
@@ -37,10 +64,22 @@ def fuzzyInstances(data, fuzzySets):
 
 
 def getMaxMembershipFuzzySet(inst, fuzzySets):
+    """
+    Fuzzify a data point, returning the fuzzy set with maximum membership value
+    :param inst: data point
+    :param fuzzySets: list of fuzzy sets 
+    :return: fuzzy set with maximum membership
+    """
     mv = fuzzyInstance(inst, fuzzySets)
     return fuzzySets[np.argwhere(mv == max(mv))[0, 0]]
 
 def getMaxMembershipFuzzySetIndex(inst, fuzzySets):
+    """
+    Fuzzify a data point, returning the fuzzy set with maximum membership value
+    :param inst: data point
+    :param fuzzySets: list of fuzzy sets 
+    :return: fuzzy set with maximum membership
+    """
     mv = fuzzyInstance(inst, fuzzySets)
     return np.argwhere(mv == max(mv))[0, 0]
 

common/Membership.py

@@ -4,6 +4,12 @@ from pyFTS import *
 
 
 def trimf(x, parameters):
+    """
+    Triangular fuzzy membership function  
+    :param x: data point
+    :param parameters: a list with 3 real values
+    :return: the membership value of x given the parameters
+    """
     xx = round(x, 3)
     if xx < parameters[0]:
         return 0
@@ -16,6 +22,12 @@ def trimf(x, parameters):
 
 
 def trapmf(x, parameters):
+    """
+    Trapezoidal fuzzy membership function  
+    :param x: data point
+    :param parameters: a list with 4 real values
+    :return: the membership value of x given the parameters
+    """
     if x < parameters[0]:
         return 0
     elif parameters[0] <= x < parameters[1]:
@@ -29,6 +41,12 @@ def trapmf(x, parameters):
 
 
 def gaussmf(x, parameters):
+    """
+    Gaussian fuzzy membership function  
+    :param x: data point
+    :param parameters: a list with 2 real values (mean and variance)
+    :return: the membership value of x given the parameters
+    """
     return math.exp((-(x - parameters[0])**2)/(2 * parameters[1]**2))
     #return math.exp(-0.5 * ((x - parameters[0]) / parameters[1]) ** 2)
 

common/Transformations.py

@@ -4,6 +4,9 @@ from pyFTS import *
 
 
 class Transformation(object):
+    """
+    Data transformation used to pre and post processing of the FTS
+    """
 
     def __init__(self, parameters):
         self.isInversible = True
@@ -21,7 +24,9 @@ class Transformation(object):
 
 
 class Differential(Transformation):
-
+    """
+    Differentiation data transform
+    """
     def __init__(self, parameters):
         super(Differential, self).__init__(parameters)
         self.lag = parameters
@@ -61,7 +66,9 @@ class Differential(Transformation):
 
 
 class AdaptiveExpectation(Transformation):
-
+    """
+    Adaptive Expectation post processing
+    """
     def __init__(self, parameters):
         super(AdaptiveExpectation, self).__init__(parameters)
         self.h = parameters

ensemble.py

@@ -15,10 +15,10 @@ class EnsembleFTS(fts.FTS):
         self.shortname = "Ensemble FTS " + name
         self.name = "Ensemble FTS"
         self.flrgs = {}
-        self.hasPointForecasting = True
+        self.has_point_forecasting = True
-        self.hasIntervalForecasting = True
+        self.has_interval_forecasting = True
-        self.hasDistributionForecasting = True
+        self.has_probability_forecasting = True
-        self.isHighOrder = True
+        self.is_high_order = True
         self.models = []
         self.parameters = []
 
@@ -40,7 +40,7 @@ class EnsembleFTS(fts.FTS):
                         mfts = model("")
 
                         mfts.partitioner = data_train_fs
-                        if not mfts.isHighOrder:
+                        if not mfts.is_high_order:
 
                             if transformation is not None:
                                 mfts.appendTransformation(transformation)
@@ -49,7 +49,7 @@ class EnsembleFTS(fts.FTS):
                             self.models.append(mfts)
                         else:
                             for order in np.arange(1, max_order + 1):
-                                if order >= mfts.minOrder:
+                                if order >= mfts.min_order:
                                     mfts = model("")
                                     mfts.partitioner = data_train_fs
 

fts.py

@@ -3,21 +3,31 @@ import pandas as pd
 from pyFTS import tree
 from pyFTS.common import FuzzySet, SortedCollection
 
+
 class FTS(object):
+    """
+    Fuzzy Time Series
+    """
     def __init__(self, order, name, **kwargs):
+        """
+        Create a Fuzzy Time Series model
+        :param order: model order
+        :param name: model name
+        :param kwargs: model specific parameters
+        """
         self.sets = {}
         self.flrgs = {}
         self.order = order
         self.shortname = name
         self.name = name
         self.detail = name
-        self.isHighOrder = False
+        self.is_high_order = False
-        self.minOrder = 1
+        self.min_order = 1
-        self.hasSeasonality = False
+        self.has_seasonality = False
-        self.hasPointForecasting = True
+        self.has_point_forecasting = True
-        self.hasIntervalForecasting = False
+        self.has_interval_forecasting = False
-        self.hasDistributionForecasting = False
+        self.has_probability_forecasting = False
-        self.isMultivariate = False
+        self.is_multivariate = False
         self.dump = False
         self.transformations = []
         self.transformations_param = []
@@ -28,6 +38,11 @@ class FTS(object):
         self.benchmark_only = False
 
     def fuzzy(self, data):
+        """
+        Fuzzify a data point
+        :param data: data point
+        :return: maximum membership fuzzy set
+        """
         best = {"fuzzyset": "", "membership": 0.0}
 
         for f in self.sets:
@@ -39,24 +54,71 @@ class FTS(object):
         return best
 
     def forecast(self, data, **kwargs):
+        """
+        Point forecast one step ahead 
+        :param data: time series with minimal length to the order of the model
+        :param kwargs: 
+        :return: 
+        """
         pass
 
     def forecastInterval(self, data, **kwargs):
+        """
+        Interval forecast one step ahead
+        :param data: 
+        :param kwargs: 
+        :return: 
+        """
         pass
 
     def forecastDistribution(self, data, **kwargs):
+        """
+        Probabilistic forecast one step ahead
+        :param data: 
+        :param kwargs: 
+        :return: 
+        """
         pass
 
     def forecastAhead(self, data, steps, **kwargs):
+        """
+        Point forecast n steps ahead
+        :param data: 
+        :param steps: 
+        :param kwargs: 
+        :return: 
+        """
         pass
 
     def forecastAheadInterval(self, data, steps, **kwargs):
+        """
+        Interval forecast n steps ahead
+        :param data: 
+        :param steps: 
+        :param kwargs: 
+        :return: 
+        """
         pass
 
     def forecastAheadDistribution(self, data, steps, **kwargs):
+        """
+        Probabilistic forecast n steps ahead
+        :param data: 
+        :param steps: 
+        :param kwargs: 
+        :return: 
+        """
         pass
 
     def train(self, data, sets, order=1, parameters=None):
+        """
+        
+        :param data: 
+        :param sets: 
+        :param order: 
+        :param parameters: 
+        :return: 
+        """
         pass
 
     def getMidpoints(self, flrg):

hofts.py

@@ -46,7 +46,7 @@ class HighOrderFTS(fts.FTS):
         self.detail = "Chen"
         self.order = 1
         self.setsDict = {}
-        self.isHighOrder = True
+        self.is_high_order = True
 
     def generateFLRG(self, flrs):
         flrgs = {}

hwang.py

@@ -4,10 +4,10 @@ from pyFTS import fts
 
 
 class HighOrderFTS(fts.FTS):
-    def __init__(self, order, **kwargs):
+    def __init__(self, order, name, **kwargs):
         super(HighOrderFTS, self).__init__(1, name)
-        self.isHighOrder = True
+        self.is_high_order = True
-        self.minOrder = 2
+        self.min_order = 2
         self.name = "Hwang High Order FTS"
         self.shortname = "Hwang" + name
         self.detail = "Hwang"

ifts.py

@@ -13,9 +13,9 @@ class IntervalFTS(hofts.HighOrderFTS):
         self.name = "Interval FTS"
         self.detail = "Silva, P.; Guimarães, F.; Sadaei, H. (2016)"
         self.flrgs = {}
-        self.hasPointForecasting = False
+        self.has_point_forecasting = False
-        self.hasIntervalForecasting = True
+        self.has_point_forecasting = True
-        self.isHighOrder = True
+        self.is_high_order = True
 
     def getUpper(self, flrg):
         if flrg.strLHS() in self.flrgs:

ismailefendi.py

@@ -33,7 +33,7 @@ class ImprovedWeightedFLRG(object):
 
 
 class ImprovedWeightedFTS(fts.FTS):
-    def __init__(self, order, **kwargs):
+    def __init__(self, order, name, **kwargs):
         super(ImprovedWeightedFTS, self).__init__(1, "IWFTS " + name)
         self.name = "Improved Weighted FTS"
         self.detail = "Ismail & Efendi"
@@ -49,7 +49,7 @@ class ImprovedWeightedFTS(fts.FTS):
                 flrgs[flr.LHS.name].append(flr.RHS)
         return (flrgs)
 
-    def train(self, data, sets,order=1,parameters=None):
+    def train(self, data, sets, order=1, parameters=None):
         self.sets = sets
 
         for s in self.sets:    self.setsDict[s.name] = s

models/cmsfts.py

@@ -4,6 +4,9 @@ from pyFTS import fts, sfts, chen
 
 
 class ContextualSeasonalFLRG(object):
+    """
+    Contextual Seasonal Fuzzy Logical Relationship Group
+    """
     def __init__(self, seasonality):
         self.season = seasonality
         self.flrgs = {}
@@ -24,16 +27,19 @@ class ContextualSeasonalFLRG(object):
 
 
 class ContextualMultiSeasonalFTS(sfts.SeasonalFTS):
-    def __init__(self, order, name, **kwargs):
+    """
+    Contextual Multi-Seasonal Fuzzy Time Series
+    """
+    def __init__(self, order, name, indexer, **kwargs):
         super(ContextualMultiSeasonalFTS, self).__init__("CMSFTS")
         self.name = "Contextual Multi Seasonal FTS"
         self.shortname = "CMSFTS " + name
         self.detail = ""
         self.seasonality = 1
-        self.hasSeasonality = True
+        self.has_seasonality = True
-        self.hasPointForecasting = True
+        self.has_point_forecasting = True
-        self.isHighOrder = True
+        self.is_high_order = True
-        self.isMultivariate = True
+        self.is_multivariate = True
         self.indexer = indexer
         self.flrgs = {}
 

models/msfts.py

@@ -4,7 +4,10 @@ from pyFTS import fts, sfts
 
 
 class MultiSeasonalFTS(sfts.SeasonalFTS):
-    def __init__(self, order, name, **kwargs):
+    """
+    Multi-Seasonal Fuzzy Time Series
+    """
+    def __init__(self, order, name, indexer, **kwargs):
         super(MultiSeasonalFTS, self).__init__("MSFTS")
         self.name = "Multi Seasonal FTS"
         self.shortname = "MSFTS " + name

models/seasonal/SeasonalIndexer.py

@@ -2,6 +2,9 @@ import numpy as np
 from enum import Enum
 
 class SeasonalIndexer(object):
+    """
+    Seasonal Indexer. Responsible to find the seasonal index of a data point inside its data set
+    """
     def __init__(self,num_seasons):
         self.num_seasons = num_seasons
 

partitioners/__init__.py

@@ -0,0 +1,3 @@
+"""
+Module for pyFTS  Universe of Discourse partitioners.
+"""

partitioners/partitioner.py

@@ -3,7 +3,21 @@ import  numpy as np
 
 
 class Partitioner(object):
-    def __init__(self,name,data,npart,func = Membership.trimf, names=None, prefix="A", transformation=None):
+    """
+    Universe of Discourse partitioner. Split data on several fuzzy sets
+    """
+
+    def __init__(self, name, data, npart, func=Membership.trimf, names=None, prefix="A", transformation=None):
+        """
+        Universe of Discourse partitioner scheme. Split data on several fuzzy sets
+        :param name: partitioner name
+        :param data: original data to be partitioned
+        :param npart: number of partitions 
+        :param func: membership function
+        :param names: list of partitions names. If None is given the partitions will be auto named with prefix
+        :param prefix: prefix of auto generated partition names
+        :param transformation: data transformation to be applied on data
+        """
         self.name = name
         self.partitions = npart
         self.sets = []
@@ -31,9 +45,19 @@ class Partitioner(object):
         self.sets = self.build(ndata)
 
     def build(self, data):
+        """
+        Perform the partitioning of the Universe of Discourse
+        :param data: 
+        :return: 
+        """
         pass
 
-    def plot(self,ax):
+    def plot(self, ax):
+        """
+        Plot the 
+        :param ax: 
+        :return: 
+        """
         ax.set_title(self.name)
         ax.set_ylim([0, 1])
         ax.set_xlim([self.min, self.max])

pwfts.py

@@ -13,31 +13,31 @@ class ProbabilisticWeightedFLRG(hofts.HighOrderFLRG):
     def __init__(self, order):
         super(ProbabilisticWeightedFLRG, self).__init__(order)
         self.RHS = {}
-        self.frequencyCount = 0.0
+        self.frequency_count = 0.0
 
     def appendRHS(self, c):
-        self.frequencyCount += 1.0
+        self.frequency_count += 1.0
         if c.name in self.RHS:
             self.RHS[c.name] += 1.0
         else:
             self.RHS[c.name] = 1.0
 
     def appendRHSFuzzy(self, c, mv):
-        self.frequencyCount += mv
+        self.frequency_count += mv
         if c.name in self.RHS:
             self.RHS[c.name] += mv
         else:
             self.RHS[c.name] = mv
 
     def get_probability(self, c):
-        return self.RHS[c] / self.frequencyCount
+        return self.RHS[c] / self.frequency_count
 
     def __str__(self):
         tmp2 = ""
         for c in sorted(self.RHS):
             if len(tmp2) > 0:
                 tmp2 = tmp2 + ", "
-            tmp2 = tmp2 + "(" + str(round(self.RHS[c] / self.frequencyCount, 3)) + ")" + c
+            tmp2 = tmp2 + "(" + str(round(self.RHS[c] / self.frequency_count, 3)) + ")" + c
         return self.strLHS() + " -> " + tmp2
 
 
@@ -48,11 +48,11 @@ class ProbabilisticWeightedFTS(ifts.IntervalFTS):
         self.name = "Probabilistic FTS"
         self.detail = "Silva, P.; Guimarães, F.; Sadaei, H."
         self.flrgs = {}
-        self.globalFrequency = 0
+        self.global_frequency_count = 0
-        self.hasPointForecasting = True
+        self.has_point_forecasting = True
-        self.hasIntervalForecasting = True
+        self.has_interval_forecasting = True
-        self.hasDistributionForecasting = True
+        self.has_probability_forecasting = True
-        self.isHighOrder = True
+        self.is_high_order = True
         self.auto_update = kwargs.get('update',False)
 
     def train(self, data, sets, order=1,parameters=None):
@@ -108,7 +108,7 @@ class ProbabilisticWeightedFTS(ifts.IntervalFTS):
                 for c, e in enumerate(_sets, start=0):
                     flrgs[flrg.strLHS()].appendRHSFuzzy(e,rhs_mv[c]*max(lhs_mv))
 
-                self.globalFrequency += max(lhs_mv)
+                self.global_frequency_count += max(lhs_mv)
 
         return (flrgs)
 
@@ -130,7 +130,7 @@ class ProbabilisticWeightedFTS(ifts.IntervalFTS):
                 flrgs[flrg.strLHS()].appendRHS(flrs[k-1].RHS)
             if self.dump: print("RHS: " + str(flrs[k-1]))
 
-            self.globalFrequency += 1
+            self.global_frequency_count += 1
         return (flrgs)
 
     def update_model(self,data):
@@ -147,7 +147,7 @@ class ProbabilisticWeightedFTS(ifts.IntervalFTS):
             self.flrgs[flrg.strLHS()] = flrg
             self.flrgs[flrg.strLHS()].appendRHS(fzzy[self.order])
 
-        self.globalFrequency += 1
+        self.global_frequency_count += 1
 
     def add_new_PWFLGR(self, flrg):
         if flrg.strLHS() not in self.flrgs:
@@ -155,11 +155,11 @@ class ProbabilisticWeightedFTS(ifts.IntervalFTS):
             for fs in flrg.LHS: tmp.appendLHS(fs)
             tmp.appendRHS(flrg.LHS[-1])
             self.flrgs[tmp.strLHS()] = tmp;
-            self.globalFrequency += 1
+            self.global_frequency_count += 1
 
     def get_probability(self, flrg):
         if flrg.strLHS() in self.flrgs:
-            return self.flrgs[flrg.strLHS()].frequencyCount / self.globalFrequency
+            return self.flrgs[flrg.strLHS()].frequency_count / self.global_frequency_count
         else:
             self.add_new_PWFLGR(flrg)
             return self.get_probability(flrg)
@@ -572,6 +572,6 @@ class ProbabilisticWeightedFTS(ifts.IntervalFTS):
     def __str__(self):
         tmp = self.name + ":\n"
         for r in sorted(self.flrgs):
-            p = round(self.flrgs[r].frequencyCount / self.globalFrequency, 3)
+            p = round(self.flrgs[r].frequencyCount / self.global_frequency_count, 3)
             tmp = tmp + "(" + str(p) + ") " + str(self.flrgs[r]) + "\n"
         return tmp

sadaei.py

@@ -2,6 +2,7 @@ import numpy as np
 from pyFTS.common import FuzzySet,FLR
 from pyFTS import fts
 
+
 class ExponentialyWeightedFLRG(object):
     def __init__(self, LHS, c):
         self.LHS = LHS

sfts.py

@@ -31,9 +31,9 @@ class SeasonalFTS(fts.FTS):
         self.name = "Seasonal FTS"
         self.detail = "Chen"
         self.seasonality = 1
-        self.hasSeasonality = True
+        self.has_seasonality = True
-        self.hasPointForecasting = True
+        self.has_point_forecasting = True
-        self.isHighOrder = False
+        self.is_high_order = False
 
     def generateFLRG(self, flrs):
         flrgs = []

tests/__init__.py

@@ -0,0 +1,3 @@
+"""
+Module for testing pyFTS modules and models
+"""