685 lines
26 KiB
Python
685 lines
26 KiB
Python
#!/usr/bin/python
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# -*- coding: utf8 -*-
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import numpy as np
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import pandas as pd
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import matplotlib as plt
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import matplotlib.colors as pltcolors
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import matplotlib.pyplot as plt
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from mpl_toolkits.mplot3d import Axes3D
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# from sklearn.cross_validation import KFold
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from pyFTS.benchmarks import Measures, naive, ResidualAnalysis
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from pyFTS.partitioners import Grid
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from pyFTS.common import Membership, FuzzySet, FLR, Transformations, Util
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from pyFTS import fts, chen, yu, ismailefendi, sadaei, hofts, hwang, pfts, ifts
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colors = ['grey', 'rosybrown', 'maroon', 'red','orange', 'yellow', 'olive', 'green',
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'cyan', 'blue', 'darkblue', 'purple', 'darkviolet']
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ncol = len(colors)
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styles = ['-','--','-.',':','.']
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nsty = len(styles)
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def allPointForecasters(data_train, data_test, partitions, max_order=3, statistics=True, residuals=True,
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series=True, save=False, file=None, tam=[20, 5], models=None, transformation=None):
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if models is None:
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models = [naive.Naive, chen.ConventionalFTS, yu.WeightedFTS, ismailefendi.ImprovedWeightedFTS,
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sadaei.ExponentialyWeightedFTS, hofts.HighOrderFTS, pfts.ProbabilisticFTS]
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objs = []
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if transformation is not None:
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data_train_fs = Grid.GridPartitionerTrimf(transformation.apply(data_train),partitions)
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else:
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data_train_fs = Grid.GridPartitionerTrimf(data_train, partitions)
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count = 1
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lcolors = []
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for count, model in enumerate(models, start=0):
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#print(model)
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mfts = model("")
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if not mfts.isHighOrder:
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if transformation is not None:
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mfts.appendTransformation(transformation)
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mfts.train(data_train, data_train_fs)
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objs.append(mfts)
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lcolors.append( colors[count % ncol] )
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else:
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for order in np.arange(1,max_order+1):
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if order >= mfts.minOrder:
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mfts = model(" n = " + str(order))
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if transformation is not None:
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mfts.appendTransformation(transformation)
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mfts.train(data_train, data_train_fs, order=order)
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objs.append(mfts)
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lcolors.append(colors[count % ncol])
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if statistics:
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print(getPointStatistics(data_test, objs))
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if residuals:
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print(ResidualAnalysis.compareResiduals(data_test, objs))
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ResidualAnalysis.plotResiduals2(data_test, objs, save=save, file=file, tam=tam)
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if series:
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plotComparedSeries(data_test, objs, lcolors, typeonlegend=False, save=save, file=file, tam=tam,
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intervals=False)
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def getPointStatistics(data, models, externalmodels = None, externalforecasts = None):
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ret = "Model & Order & RMSE & MAPE & Theil's U \\\\ \n"
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for fts in models:
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forecasts = fts.forecast(data)
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ret += fts.shortname + " & "
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ret += str(fts.order) + " & "
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ret += str(round(Measures.rmse(np.array(data[fts.order:]), np.array(forecasts[:-1])), 2)) + " & "
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ret += str(round(Measures.smape(np.array(data[fts.order:]), np.array(forecasts[:-1])), 2))+ " & "
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ret += str(round(Measures.UStatistic(np.array(data[fts.order:]), np.array(forecasts[:-1])), 2))
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#ret += str(round(Measures.TheilsInequality(np.array(data[fts.order:]), np.array(forecasts[:-1])), 4))
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ret += " \\\\ \n"
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if externalmodels is not None:
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l = len(externalmodels)
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for k in np.arange(0,l):
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ret += externalmodels[k] + " & "
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ret += " 1 & "
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ret += str(round(Measures.rmse(data[fts.order:], externalforecasts[k][:-1]), 2)) + " & "
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ret += str(round(Measures.smape(data[fts.order:], externalforecasts[k][:-1]), 2))+ " & "
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ret += str(round(Measures.UStatistic(np.array(data[fts.order:]), np.array(forecasts[:-1])), 2))
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ret += " \\\\ \n"
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return ret
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def allIntervalForecasters(data_train, data_test, partitions, max_order=3,save=False, file=None, tam=[20, 5],
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models=None, transformation=None):
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if models is None:
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models = [ifts.IntervalFTS, pfts.ProbabilisticFTS]
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objs = []
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if transformation is not None:
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data_train_fs = Grid.GridPartitionerTrimf(transformation.apply(data_train),partitions)
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else:
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data_train_fs = Grid.GridPartitionerTrimf(data_train, partitions)
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lcolors = []
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for count, model in Util.enumerate2(models, start=0, step=2):
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mfts = model("")
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if not mfts.isHighOrder:
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if transformation is not None:
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mfts.appendTransformation(transformation)
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mfts.train(data_train, data_train_fs)
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objs.append(mfts)
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lcolors.append( colors[count % ncol] )
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else:
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for order in np.arange(1,max_order+1):
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if order >= mfts.minOrder:
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mfts = model(" n = " + str(order))
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if transformation is not None:
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mfts.appendTransformation(transformation)
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mfts.train(data_train, data_train_fs, order=order)
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objs.append(mfts)
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lcolors.append(colors[count % ncol])
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print(getIntervalStatistics(data_test, objs))
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plotComparedSeries(data_test, objs, lcolors, typeonlegend=False, save=save, file=file, tam=tam, intervals=True)
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def getIntervalStatistics(original, models):
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ret = "Model & Order & Sharpness & Resolution & Coverage \\\\ \n"
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for fts in models:
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forecasts = fts.forecastInterval(original)
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ret += fts.shortname + " & "
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ret += str(fts.order) + " & "
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ret += str(round(Measures.sharpness(forecasts), 2)) + " & "
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ret += str(round(Measures.resolution(forecasts), 2)) + " & "
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ret += str(round(Measures.coverage(original[fts.order:], forecasts[:-1]), 2)) + " \\\\ \n"
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return ret
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def plotDistribution(dist):
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for k in dist.index:
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alpha = np.array([dist[x][k] for x in dist]) * 100
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x = [k for x in np.arange(0, len(alpha))]
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y = dist.columns
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plt.scatter(x, y, c=alpha, marker='s', linewidths=0, cmap='Oranges', norm=pltcolors.Normalize(vmin=0, vmax=1),
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vmin=0, vmax=1, edgecolors=None)
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def plotComparedSeries(original, models, colors, typeonlegend=False, save=False, file=None, tam=[20, 5],
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intervals=True):
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fig = plt.figure(figsize=tam)
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ax = fig.add_subplot(111)
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mi = []
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ma = []
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legends = []
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ax.plot(original, color='black', label="Original", linewidth=1.5)
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for count, fts in enumerate(models, start=0):
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if fts.hasPointForecasting and not intervals:
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forecasted = fts.forecast(original)
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mi.append(min(forecasted) * 0.95)
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ma.append(max(forecasted) * 1.05)
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for k in np.arange(0, fts.order):
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forecasted.insert(0, None)
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lbl = fts.shortname
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if typeonlegend: lbl += " (Point)"
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ax.plot(forecasted, color=colors[count], label=lbl, ls="-")
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if fts.hasIntervalForecasting and intervals:
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forecasted = fts.forecastInterval(original)
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lower = [kk[0] for kk in forecasted]
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upper = [kk[1] for kk in forecasted]
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mi.append(min(lower) * 0.95)
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ma.append(max(upper) * 1.05)
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for k in np.arange(0, fts.order):
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lower.insert(0, None)
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upper.insert(0, None)
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lbl = fts.shortname
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if typeonlegend: lbl += " (Interval)"
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ax.plot(lower, color=colors[count], label=lbl, ls="-")
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ax.plot(upper, color=colors[count], ls="-")
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handles0, labels0 = ax.get_legend_handles_labels()
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lgd = ax.legend(handles0, labels0, loc=2, bbox_to_anchor=(1, 1))
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legends.append(lgd)
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# ax.set_title(fts.name)
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ax.set_ylim([min(mi), max(ma)])
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ax.set_ylabel('F(T)')
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ax.set_xlabel('T')
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ax.set_xlim([0, len(original)])
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Util.showAndSaveImage(fig, file, save, lgd=legends)
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def plotComparedIntervalsAhead(original, models, colors, distributions, time_from, time_to,
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interpol=False, save=False, file=None, tam=[20, 5], resolution=None):
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fig = plt.figure(figsize=tam)
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ax = fig.add_subplot(111)
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if resolution is None: resolution = (max(original) - min(original)) / 100
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mi = []
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ma = []
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for count, fts in enumerate(models, start=0):
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if fts.hasDistributionForecasting and distributions[count]:
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density = fts.forecastAheadDistribution(original[time_from - fts.order:time_from],
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time_to, resolution, parameters=True)
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y = density.columns
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t = len(y)
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for k in density.index:
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alpha = np.array([density[q][k] for q in density]) * 100
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x = [time_from + k for x in np.arange(0, t)]
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for cc in np.arange(0, resolution, 5):
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ax.scatter(x, y + cc, c=alpha, marker='s', linewidths=0, cmap='Oranges', edgecolors=None)
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if interpol and k < max(density.index):
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diffs = [(density[q][k + 1] - density[q][k]) / 50 for q in density]
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for p in np.arange(0, 50):
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xx = [time_from + k + 0.02 * p for q in np.arange(0, t)]
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alpha2 = np.array(
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[density[density.columns[q]][k] + diffs[q] * p for q in np.arange(0, t)]) * 100
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ax.scatter(xx, y, c=alpha2, marker='s', linewidths=0, cmap='Oranges',
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norm=pltcolors.Normalize(vmin=0, vmax=1), vmin=0, vmax=1, edgecolors=None)
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if fts.hasIntervalForecasting:
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forecasts = fts.forecastAheadInterval(original[time_from - fts.order:time_from], time_to)
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lower = [kk[0] for kk in forecasts]
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upper = [kk[1] for kk in forecasts]
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mi.append(min(lower))
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ma.append(max(upper))
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for k in np.arange(0, time_from - fts.order):
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lower.insert(0, None)
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upper.insert(0, None)
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ax.plot(lower, color=colors[count], label=fts.shortname)
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ax.plot(upper, color=colors[count])
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else:
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forecasts = fts.forecast(original)
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mi.append(min(forecasts))
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ma.append(max(forecasts))
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for k in np.arange(0, time_from):
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forecasts.insert(0, None)
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ax.plot(forecasts, color=colors[count], label=fts.shortname)
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ax.plot(original, color='black', label="Original")
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handles0, labels0 = ax.get_legend_handles_labels()
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ax.legend(handles0, labels0, loc=2)
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# ax.set_title(fts.name)
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_mi = min(mi)
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if _mi < 0:
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_mi *= 1.1
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else:
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_mi *= 0.9
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_ma = max(ma)
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if _ma < 0:
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_ma *= 0.9
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else:
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_ma *= 1.1
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ax.set_ylim([_mi, _ma])
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ax.set_ylabel('F(T)')
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ax.set_xlabel('T')
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ax.set_xlim([0, len(original)])
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Util.showAndSaveImage(fig, file, save)
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def plotCompared(original, forecasts, labels, title):
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fig = plt.figure(figsize=[13, 6])
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ax = fig.add_subplot(111)
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ax.plot(original, color='k', label="Original")
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for c in range(0, len(forecasts)):
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ax.plot(forecasts[c], label=labels[c])
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handles0, labels0 = ax.get_legend_handles_labels()
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ax.legend(handles0, labels0)
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ax.set_title(title)
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ax.set_ylabel('F(T)')
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ax.set_xlabel('T')
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ax.set_xlim([0, len(original)])
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ax.set_ylim([min(original), max(original)])
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def SelecaoKFold_MenorRMSE(original, parameters, modelo):
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nfolds = 5
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ret = []
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errors = np.array([[0 for k in parameters] for z in np.arange(0, nfolds)])
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forecasted_best = []
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print("Série Original")
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fig = plt.figure(figsize=[18, 10])
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fig.suptitle("Comparação de modelos ")
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ax0 = fig.add_axes([0, 0.5, 0.65, 0.45]) # left, bottom, width, height
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ax0.set_xlim([0, len(original)])
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ax0.set_ylim([min(original), max(original)])
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ax0.set_title('Série Temporal')
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ax0.set_ylabel('F(T)')
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ax0.set_xlabel('T')
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ax0.plot(original, label="Original")
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min_rmse_fold = 100000.0
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best = None
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fc = 0 # Fold count
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kf = KFold(len(original), n_folds=nfolds)
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for train_ix, test_ix in kf:
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train = original[train_ix]
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test = original[test_ix]
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min_rmse = 100000.0
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best_fold = None
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forecasted_best_fold = []
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errors_fold = []
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pc = 0 # Parameter count
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for p in parameters:
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sets = Grid.GridPartitionerTrimf(train, p)
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fts = modelo(str(p) + " particoes")
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fts.train(train, sets)
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forecasted = [fts.forecast(xx) for xx in test]
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error = Measures.rmse(np.array(forecasted), np.array(test))
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errors_fold.append(error)
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print(fc, p, error)
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errors[fc, pc] = error
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if error < min_rmse:
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min_rmse = error
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best_fold = fts
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forecasted_best_fold = forecasted
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pc = pc + 1
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forecasted_best_fold = [best_fold.forecast(xx) for xx in original]
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ax0.plot(forecasted_best_fold, label=best_fold.name)
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if np.mean(errors_fold) < min_rmse_fold:
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min_rmse_fold = np.mean(errors)
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best = best_fold
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forecasted_best = forecasted_best_fold
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fc = fc + 1
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handles0, labels0 = ax0.get_legend_handles_labels()
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ax0.legend(handles0, labels0)
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ax1 = Axes3D(fig, rect=[0.7, 0.5, 0.3, 0.45], elev=30, azim=144)
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# ax1 = fig.add_axes([0.6, 0.0, 0.45, 0.45], projection='3d')
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ax1.set_title('Comparação dos Erros Quadráticos Médios')
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ax1.set_zlabel('RMSE')
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ax1.set_xlabel('K-fold')
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ax1.set_ylabel('Partições')
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X, Y = np.meshgrid(np.arange(0, nfolds), parameters)
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surf = ax1.plot_surface(X, Y, errors.T, rstride=1, cstride=1, antialiased=True)
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ret.append(best)
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ret.append(forecasted_best)
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# Modelo diferencial
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print("\nSérie Diferencial")
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errors = np.array([[0 for k in parameters] for z in np.arange(0, nfolds)])
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forecastedd_best = []
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ax2 = fig.add_axes([0, 0, 0.65, 0.45]) # left, bottom, width, height
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ax2.set_xlim([0, len(original)])
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ax2.set_ylim([min(original), max(original)])
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ax2.set_title('Série Temporal')
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ax2.set_ylabel('F(T)')
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ax2.set_xlabel('T')
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ax2.plot(original, label="Original")
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min_rmse = 100000.0
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min_rmse_fold = 100000.0
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bestd = None
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fc = 0
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diff = Transformations.differential(original)
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kf = KFold(len(original), n_folds=nfolds)
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for train_ix, test_ix in kf:
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train = diff[train_ix]
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test = diff[test_ix]
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min_rmse = 100000.0
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best_fold = None
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forecasted_best_fold = []
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errors_fold = []
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pc = 0
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for p in parameters:
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sets = Grid.GridPartitionerTrimf(train, p)
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fts = modelo(str(p) + " particoes")
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fts.train(train, sets)
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forecasted = [fts.forecastDiff(test, xx) for xx in np.arange(len(test))]
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error = Measures.rmse(np.array(forecasted), np.array(test))
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print(fc, p, error)
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errors[fc, pc] = error
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errors_fold.append(error)
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if error < min_rmse:
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min_rmse = error
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best_fold = fts
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pc = pc + 1
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forecasted_best_fold = [best_fold.forecastDiff(original, xx) for xx in np.arange(len(original))]
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ax2.plot(forecasted_best_fold, label=best_fold.name)
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if np.mean(errors_fold) < min_rmse_fold:
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min_rmse_fold = np.mean(errors)
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best = best_fold
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forecasted_best = forecasted_best_fold
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fc = fc + 1
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handles0, labels0 = ax2.get_legend_handles_labels()
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ax2.legend(handles0, labels0)
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ax3 = Axes3D(fig, rect=[0.7, 0, 0.3, 0.45], elev=30, azim=144)
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# ax1 = fig.add_axes([0.6, 0.0, 0.45, 0.45], projection='3d')
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ax3.set_title('Comparação dos Erros Quadráticos Médios')
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ax3.set_zlabel('RMSE')
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ax3.set_xlabel('K-fold')
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ax3.set_ylabel('Partições')
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X, Y = np.meshgrid(np.arange(0, nfolds), parameters)
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surf = ax3.plot_surface(X, Y, errors.T, rstride=1, cstride=1, antialiased=True)
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ret.append(best)
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ret.append(forecasted_best)
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return ret
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def SelecaoSimples_MenorRMSE(original, parameters, modelo):
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ret = []
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errors = []
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forecasted_best = []
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print("Série Original")
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fig = plt.figure(figsize=[20, 12])
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fig.suptitle("Comparação de modelos ")
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ax0 = fig.add_axes([0, 0.5, 0.65, 0.45]) # left, bottom, width, height
|
|
ax0.set_xlim([0, len(original)])
|
|
ax0.set_ylim([min(original), max(original)])
|
|
ax0.set_title('Série Temporal')
|
|
ax0.set_ylabel('F(T)')
|
|
ax0.set_xlabel('T')
|
|
ax0.plot(original, label="Original")
|
|
min_rmse = 100000.0
|
|
best = None
|
|
for p in parameters:
|
|
sets = Grid.GridPartitionerTrimf(original, p)
|
|
fts = modelo(str(p) + " particoes")
|
|
fts.train(original, sets)
|
|
# print(original)
|
|
forecasted = fts.forecast(original)
|
|
forecasted.insert(0, original[0])
|
|
# print(forecasted)
|
|
ax0.plot(forecasted, label=fts.name)
|
|
error = Measures.rmse(np.array(forecasted), np.array(original))
|
|
print(p, error)
|
|
errors.append(error)
|
|
if error < min_rmse:
|
|
min_rmse = error
|
|
best = fts
|
|
forecasted_best = forecasted
|
|
handles0, labels0 = ax0.get_legend_handles_labels()
|
|
ax0.legend(handles0, labels0)
|
|
ax1 = fig.add_axes([0.7, 0.5, 0.3, 0.45]) # left, bottom, width, height
|
|
ax1.set_title('Comparação dos Erros Quadráticos Médios')
|
|
ax1.set_ylabel('RMSE')
|
|
ax1.set_xlabel('Quantidade de Partições')
|
|
ax1.set_xlim([min(parameters), max(parameters)])
|
|
ax1.plot(parameters, errors)
|
|
ret.append(best)
|
|
ret.append(forecasted_best)
|
|
# Modelo diferencial
|
|
print("\nSérie Diferencial")
|
|
difffts = Transformations.differential(original)
|
|
errors = []
|
|
forecastedd_best = []
|
|
ax2 = fig.add_axes([0, 0, 0.65, 0.45]) # left, bottom, width, height
|
|
ax2.set_xlim([0, len(difffts)])
|
|
ax2.set_ylim([min(difffts), max(difffts)])
|
|
ax2.set_title('Série Temporal')
|
|
ax2.set_ylabel('F(T)')
|
|
ax2.set_xlabel('T')
|
|
ax2.plot(difffts, label="Original")
|
|
min_rmse = 100000.0
|
|
bestd = None
|
|
for p in parameters:
|
|
sets = Grid.GridPartitionerTrimf(difffts, p)
|
|
fts = modelo(str(p) + " particoes")
|
|
fts.train(difffts, sets)
|
|
forecasted = fts.forecast(difffts)
|
|
forecasted.insert(0, difffts[0])
|
|
ax2.plot(forecasted, label=fts.name)
|
|
error = Measures.rmse(np.array(forecasted), np.array(difffts))
|
|
print(p, error)
|
|
errors.append(error)
|
|
if error < min_rmse:
|
|
min_rmse = error
|
|
bestd = fts
|
|
forecastedd_best = forecasted
|
|
handles0, labels0 = ax2.get_legend_handles_labels()
|
|
ax2.legend(handles0, labels0)
|
|
ax3 = fig.add_axes([0.7, 0, 0.3, 0.45]) # left, bottom, width, height
|
|
ax3.set_title('Comparação dos Erros Quadráticos Médios')
|
|
ax3.set_ylabel('RMSE')
|
|
ax3.set_xlabel('Quantidade de Partições')
|
|
ax3.set_xlim([min(parameters), max(parameters)])
|
|
ax3.plot(parameters, errors)
|
|
ret.append(bestd)
|
|
ret.append(forecastedd_best)
|
|
return ret
|
|
|
|
|
|
def compareModelsPlot(original, models_fo, models_ho):
|
|
fig = plt.figure(figsize=[13, 6])
|
|
fig.suptitle("Comparação de modelos ")
|
|
ax0 = fig.add_axes([0, 0, 1, 1]) # left, bottom, width, height
|
|
rows = []
|
|
for model in models_fo:
|
|
fts = model["model"]
|
|
ax0.plot(model["forecasted"], label=model["name"])
|
|
for model in models_ho:
|
|
fts = model["model"]
|
|
ax0.plot(model["forecasted"], label=model["name"])
|
|
handles0, labels0 = ax0.get_legend_handles_labels()
|
|
ax0.legend(handles0, labels0)
|
|
|
|
|
|
def compareModelsTable(original, models_fo, models_ho):
|
|
fig = plt.figure(figsize=[12, 4])
|
|
fig.suptitle("Comparação de modelos ")
|
|
columns = ['Modelo', 'Ordem', 'Partições', 'RMSE', 'MAPE (%)']
|
|
rows = []
|
|
for model in models_fo:
|
|
fts = model["model"]
|
|
error_r = Measures.rmse(model["forecasted"], original)
|
|
error_m = round(Measures.mape(model["forecasted"], original) * 100, 2)
|
|
rows.append([model["name"], fts.order, len(fts.sets), error_r, error_m])
|
|
for model in models_ho:
|
|
fts = model["model"]
|
|
error_r = Measures.rmse(model["forecasted"][fts.order:], original[fts.order:])
|
|
error_m = round(Measures.mape(model["forecasted"][fts.order:], original[fts.order:]) * 100, 2)
|
|
rows.append([model["name"], fts.order, len(fts.sets), error_r, error_m])
|
|
ax1 = fig.add_axes([0, 0, 1, 1]) # left, bottom, width, height
|
|
ax1.set_xticks([])
|
|
ax1.set_yticks([])
|
|
ax1.table(cellText=rows,
|
|
colLabels=columns,
|
|
cellLoc='center',
|
|
bbox=[0, 0, 1, 1])
|
|
sup = "\\begin{tabular}{"
|
|
header = ""
|
|
body = ""
|
|
footer = ""
|
|
|
|
for c in columns:
|
|
sup = sup + "|c"
|
|
if len(header) > 0:
|
|
header = header + " & "
|
|
header = header + "\\textbf{" + c + "} "
|
|
sup = sup + "|} \\hline\n"
|
|
header = header + "\\\\ \\hline \n"
|
|
|
|
for r in rows:
|
|
lin = ""
|
|
for c in r:
|
|
if len(lin) > 0:
|
|
lin = lin + " & "
|
|
lin = lin + str(c)
|
|
|
|
body = body + lin + "\\\\ \\hline \n"
|
|
|
|
return sup + header + body + "\\end{tabular}"
|
|
|
|
|
|
def simpleSearch_RMSE(train, test, model, partitions, orders, save=False, file=None, tam=[10, 15],
|
|
plotforecasts=False, elev=30, azim=144, intervals=False):
|
|
ret = []
|
|
errors = np.array([[0 for k in range(len(partitions))] for kk in range(len(orders))])
|
|
forecasted_best = []
|
|
fig = plt.figure(figsize=tam)
|
|
# fig.suptitle("Comparação de modelos ")
|
|
if plotforecasts:
|
|
ax0 = fig.add_axes([0, 0.4, 0.9, 0.5]) # left, bottom, width, height
|
|
ax0.set_xlim([0, len(train)])
|
|
ax0.set_ylim([min(train) * 0.9, max(train) * 1.1])
|
|
ax0.set_title('Forecasts')
|
|
ax0.set_ylabel('F(T)')
|
|
ax0.set_xlabel('T')
|
|
min_rmse = 1000000.0
|
|
best = None
|
|
|
|
for pc, p in enumerate(partitions, start=0):
|
|
|
|
sets = Grid.GridPartitionerTrimf(train, p)
|
|
for oc, o in enumerate(orders, start=0):
|
|
fts = model("q = " + str(p) + " n = " + str(o))
|
|
fts.train(train, sets, o)
|
|
if not intervals:
|
|
forecasted = fts.forecast(test)
|
|
error = Measures.rmse(np.array(test[o:]), np.array(forecasted[:-1]))
|
|
for kk in range(o):
|
|
forecasted.insert(0, None)
|
|
if plotforecasts: ax0.plot(forecasted, label=fts.name)
|
|
else:
|
|
forecasted = fts.forecastInterval(test)
|
|
error = 1.0 - Measures.rmse_interval(np.array(test[o:]), np.array(forecasted[:-1]))
|
|
errors[oc, pc] = error
|
|
if error < min_rmse:
|
|
min_rmse = error
|
|
best = fts
|
|
forecasted_best = forecasted
|
|
|
|
# print(min_rmse)
|
|
if plotforecasts:
|
|
# handles0, labels0 = ax0.get_legend_handles_labels()
|
|
# ax0.legend(handles0, labels0)
|
|
ax0.plot(test, label="Original", linewidth=3.0, color="black")
|
|
ax1 = Axes3D(fig, rect=[0, 1, 0.9, 0.9], elev=elev, azim=azim)
|
|
if not plotforecasts: ax1 = Axes3D(fig, rect=[0, 1, 0.9, 0.9], elev=elev, azim=azim)
|
|
# ax1 = fig.add_axes([0.6, 0.5, 0.45, 0.45], projection='3d')
|
|
ax1.set_title('Error Surface')
|
|
ax1.set_ylabel('Model order')
|
|
ax1.set_xlabel('Number of partitions')
|
|
ax1.set_zlabel('RMSE')
|
|
X, Y = np.meshgrid(partitions, orders)
|
|
surf = ax1.plot_surface(X, Y, errors, rstride=1, cstride=1, antialiased=True)
|
|
ret.append(best)
|
|
ret.append(forecasted_best)
|
|
|
|
# plt.tight_layout()
|
|
|
|
Util.showAndSaveImage(fig, file, save)
|
|
|
|
return ret
|
|
|
|
|
|
def pftsExploreOrderAndPartitions(data,save=False, file=None):
|
|
fig, axes = plt.subplots(nrows=4, ncols=1, figsize=[6, 8])
|
|
data_fs1 = Grid.GridPartitionerTrimf(data, 10)
|
|
mi = []
|
|
ma = []
|
|
|
|
axes[0].set_title('Point Forecasts by Order')
|
|
axes[2].set_title('Interval Forecasts by Order')
|
|
|
|
for order in np.arange(1, 6):
|
|
fts = pfts.ProbabilisticFTS("")
|
|
fts.shortname = "n = " + str(order)
|
|
fts.train(data, data_fs1, order=order)
|
|
point_forecasts = fts.forecast(data)
|
|
interval_forecasts = fts.forecastInterval(data)
|
|
lower = [kk[0] for kk in interval_forecasts]
|
|
upper = [kk[1] for kk in interval_forecasts]
|
|
mi.append(min(lower) * 0.95)
|
|
ma.append(max(upper) * 1.05)
|
|
for k in np.arange(0, order):
|
|
point_forecasts.insert(0, None)
|
|
lower.insert(0, None)
|
|
upper.insert(0, None)
|
|
axes[0].plot(point_forecasts, label=fts.shortname)
|
|
axes[2].plot(lower, label=fts.shortname)
|
|
axes[2].plot(upper)
|
|
|
|
axes[1].set_title('Point Forecasts by Number of Partitions')
|
|
axes[3].set_title('Interval Forecasts by Number of Partitions')
|
|
|
|
for partitions in np.arange(5, 11):
|
|
data_fs = Grid.GridPartitionerTrimf(data, partitions)
|
|
fts = pfts.ProbabilisticFTS("")
|
|
fts.shortname = "q = " + str(partitions)
|
|
fts.train(data, data_fs, 1)
|
|
point_forecasts = fts.forecast(data)
|
|
interval_forecasts = fts.forecastInterval(data)
|
|
lower = [kk[0] for kk in interval_forecasts]
|
|
upper = [kk[1] for kk in interval_forecasts]
|
|
mi.append(min(lower) * 0.95)
|
|
ma.append(max(upper) * 1.05)
|
|
point_forecasts.insert(0, None)
|
|
lower.insert(0, None)
|
|
upper.insert(0, None)
|
|
axes[1].plot(point_forecasts, label=fts.shortname)
|
|
axes[3].plot(lower, label=fts.shortname)
|
|
axes[3].plot(upper)
|
|
|
|
for ax in axes:
|
|
ax.set_ylabel('F(T)')
|
|
ax.set_xlabel('T')
|
|
ax.plot(data, label="Original", color="black", linewidth=1.5)
|
|
handles, labels = ax.get_legend_handles_labels()
|
|
ax.legend(handles, labels, loc=2, bbox_to_anchor=(1, 1))
|
|
ax.set_ylim([min(mi), max(ma)])
|
|
ax.set_xlim([0, len(data)])
|
|
|
|
plt.tight_layout()
|
|
|
|
Util.showAndSaveImage(fig, file, save)
|