def analyzeClusters(n_loops=1, cl=None, sp=None, shuffled=False, spShuff=False):
results = {}
n = n_loops
bins = [i for i in drange(0.0, 1.0, 0.1)]
total_hist = [0 for i in bins]
data = win.getData(shuffle=shuffled, class_=cl, spec=sp)
if spShuff is True:
win.shuffleIt(data, mode=2)
Z = hie.linkage(data, method='average', metric='correlation')
D = hie.dendrogram(Z, orientation='left', no_plot=True)
total_ys = [0 for d in D['dcoord']]
total_z = [0 for d in Z[::-1, 2]]
total_acc = [0 for d in np.diff(Z[::-1, 2], 2)]
for ii in range(0, n): # for loop added to average shuffled results
# data = win.getData(shuffle=True, class_='J')
# labels = win.getStudents(class_=classes[0])
# labels = [str(st.class_) + " " + str(st.spec) for st in labels]
Z = hie.linkage(data, method='average', metric='correlation')
D = hie.dendrogram(Z, orientation='left', no_plot=True)
# print(data[40, :])
# print(data[42, :])
# freq method
ys = [d[1] for d in D['dcoord']]
total_ys = [a + b for a, b in zip(ys, total_ys)]
hist, bins = np.histogram(ys, bins=bins)
total_hist = [a + b for a, b in zip(hist, total_hist)]
# elbow method (sort of)
z = Z[::-1, 2]
total_z = [a + b for a, b in zip(z, total_z)]
# inv elbow
acceleration = np.diff(Z[::-1, 2], 2) # 2nd derivative of distances
total_acc = [a + b for a, b in zip(acceleration, total_acc)]
if ii < n - 1: # dont get new data if there wont be another loop
data = win.getData(shuffle=shuffled, class_=cl, spec=sp)
total_hist = [a / n for a in total_hist]
total_ys = [a / n for a in total_ys]
total_z = [a / n for a in total_z]
total_acc = [a / n for a in total_acc]
results['bins'] = (bins[:-1] + bins[1:]) / 2
results['hist'] = total_hist
results['ys'] = total_ys
results['z'] = total_z
results['acc'] = total_acc
return results
import window_s_p_ft as win
import numpy as np
import scipy.stats as scp
data = win.getData(class_=None)
co_corr = np.corrcoef(data, rowvar=0)
print(np.mean(co_corr), scp.sem(co_corr, axis=None), sep=' +/- ')
print('var: ', np.var(co_corr, axis=None))
n = 10000
'''c shuff'''
m = 0
e = 0
v = 0
for ii in range(n):
data = win.getData(class_=None)
win.shuffleIt(data, 2)
co_corr = np.corrcoef(data, rowvar=0)
m += np.mean(co_corr)
e += scp.sem(co_corr, axis=None)
v += np.var(co_corr, axis=None)
m /= n
e /= n
v /= n
print(m, e, sep=' +/- ')
print('var: ', v)
'''s shuff'''
m = 0
'Fizyka kwantowa': 'Quantum Physics',
'Fizyka statystyczna i termodynamika': 'Statistical Physics and Thermodynamics',
'Opracowanie danych doświadczalnych': 'Analysis of Experimental Data',
'Analiza matematyczna 2': 'Mathematical Analysis 2',
'Probabilistyka': 'Probability',
'Algebra z geometrią': 'Algebra and Geometry',
'Wstęp do fizyki jądrowej': 'Introduction to Nuclear Physics',
'Analiza matematyczna 3': 'Mathematical Analysis 3',
'Laboratorium fizyki 2': 'Physics Laboratory 2',
'Analiza matematyczna 1': 'Mathematical Analysis 1',
'Mechanika': 'Mechanics'
}
cl = 'L'
co_corr = np.corrcoef(win.getData(class_=cl), rowvar=0)
labels = [pl_en[x] for x in win.getCoursesNames()]
mds = MDS(n_components=2, dissimilarity='precomputed')
dists = np.empty((len(co_corr), len(co_corr)))
for ii in range(len(labels)):
for jj in range(len(labels)):
dists[ii][jj] = math.sqrt(2 * (1 - co_corr[ii][jj]))
pos = mds.fit(dists).embedding_
G = nx.Graph()
G.add_nodes_from(range(len(labels)))
textstr = ""
for ii, l in enumerate(labels):
textstr += str(ii) + " - " + l + "\n"
for jj in range(ii + 1, len(labels)):
# sp = students[0].spec
# anno = []
# anno2 = []
# for ii, st in enumerate(students):
# if st.class_ != cl:
# anno.append((ii - 1, students[ii - 1].class_))
# cl = st.class_
# if st.spec != sp:
# anno2.append((ii - 1, students[ii - 1].spec))
# sp = st.spec
# anno.append(((len(students) - 1), students[-1].class_))
# anno2.append(((len(students) - 1), students[-1].spec))
# anno = anno + anno2
"""set up ranges"""
students = win.getData()
co_corr = np.corrcoef(students, rowvar=0)
vmin, vmax = co_corr.min(), co_corr.max()
win.shuffleIt(students, 2)
co_corr = np.corrcoef(students, rowvar=0)
vmin = vmin if co_corr.min() >= vmin else co_corr.min()
vmax = vmax if co_corr.min() <= vmax else co_corr.max()
students = win.getData()
win.shuffleIt(students, 1)
co_corr = np.corrcoef(students, rowvar=0)
vmin = vmin if co_corr.min() >= vmin else co_corr.min()
vmax = vmax if co_corr.min() <= vmax else co_corr.max()
vmin, vmax = vmin - 0.0001, vmax + 0.0001
"""plot heatmap"""
font = {"family": "normal", "weight": "bold", "size": 22}
'''spec: OE, MN, FK, FM''' # students = win.getStudents(shuffle=False) # cl = students[0].class_ # sp = students[0].spec # anno = [] # anno2 = [] # for ii, st in enumerate(students): # if st.class_ != cl: # anno.append((ii - 1, students[ii - 1].class_)) # cl = st.class_ # if st.spec != sp: # anno2.append((ii - 1, students[ii - 1].spec)) # sp = st.spec # anno.append(((len(students) - 1), students[-1].class_)) # anno2.append(((len(students) - 1), students[-1].spec)) # anno = anno + anno2 students = win.getData(shuffle=False, spec='FK') # win.shuffleIt(students, 2) # win.shuffleIt(students, 1) # st_corr = pairwise_distances(students, students, 'jaccard') co_corr = pairwise_distances(students.T, students.T, 'jaccard') heatmap.plotheat(co_corr, xlabels=win.getCoursesNames(), ylabels=win.getCoursesNames(), mode='special') # heatmap.plotheat(st_corr, changeTicks=False, annotation=anno, mode='special')
import networkx as nx
import matplotlib.pyplot as plt
import window_s_p_ft as win
import numpy as np
import math
from sklearn.manifold import MDS
cl = 'L'
data = win.getData(class_=cl)
data = sorted(data, key=lambda s: np.mean(s), reverse=True)
studs = win.getStudents(class_=cl)
studs = sorted(studs, key=lambda s: np.mean(s.grades), reverse=True)
st_corr = np.corrcoef(data, rowvar=1)
mds = MDS(n_components=2, dissimilarity='precomputed')
dists = np.empty((len(st_corr), len(st_corr)))
for ii in range(len(data)):
for jj in range(len(data)):
dists[ii][jj] = math.sqrt(2 * (1 - st_corr[ii][jj]))
pos = mds.fit(dists).embedding_
G = nx.Graph()
G.add_nodes_from(range(len(data)))
labels = []
for ii in range(len(data)):
labels.append(str(ii + 1) + " " +
str(studs[ii].spec))
for jj in range(ii + 1, len(data)):
d = math.sqrt(2 * (1 - st_corr[ii][jj]))
G.add_edge(ii, jj, weight=d)
'Podstawy elektroniki': 'Fundamentals of Electronics',
'Grafika inżynierska': 'Engineering Graphics',
'Metody matematyczne fizyki': 'Mathematical Methods of Physics',
'Elektronika w eksperymencie fizycznym': 'Electronics in Physical Experiment',
'Podstawy projektowania przyrządów wirtualnych': 'Fundamentals of Virtual Devices Design',
'Programowanie obiektowe': 'Object-Oriented Programming',
'Podstawy optyki': 'Fundamentals of Optics',
'Fizyka kwantowa': 'Quantum Physics',
'Fizyka statystyczna i termodynamika': 'Statistical Physics and Thermodynamics',
'Opracowanie danych doświadczalnych': 'Analysis of Experimental Data',
'Analiza matematyczna 2': 'Mathematical Analysis 2',
'Probabilistyka': 'Probability',
'Algebra z geometrią': 'Algebra and Geometry',
'Wstęp do fizyki jądrowej': 'Introduction to Nuclear Physics',
'Analiza matematyczna 3': 'Mathematical Analysis 3',
'Laboratorium fizyki 2': 'Physics Laboratory 2',
'Analiza matematyczna 1': 'Mathematical Analysis 1',
'Mechanika': 'Mechanics'
}
courses = win.getData().T
courses_names = win.getCoursesNames()
courses_names = [pl_en[x] for x in courses_names]
co_corr = np.corrcoef(win.getData(), rowvar=0)
for ii, c in enumerate(courses):
av = round(np.mean(c), 2)
var = round(np.var(c), 2)
cij = round(sum(co_corr[ii]) - 1.0, 2)
print(courses_names[ii], av, var, cij, sep=' & ')
import window_s_p_ft as win
import numpy as np
import scipy.stats as scp
import math
import matplotlib.pyplot as plt
import matplotlib
classes = ['J', 'K', 'L']
X = np.zeros((5, 217))
for sem in range(1, 6):
counter = 0
for cl in classes:
studs = win.getData(class_=cl, sems='=' + str(sem))
glav = np.mean(studs)
glsig = scp.sem(studs, axis=None)
for s in studs:
X[sem - 1][counter] = (np.mean(s) - glav) / glsig
counter += 1
plt.xlabel('xn')
plt.ylabel('xn+1')
for ii in range(0, 4):
plt.plot(X[ii, :], X[ii + 1, :], 'o', label='n='+str(ii+1)+',n+1='+str(ii+1+1))
plt.legend(loc=2)
plt.show()
# bins = (bins[:-1] + bins[1:]) / 2
# plt.bar(bins_, hist, align='center', width=width, label='real')
# plt.show()
classes = ['J', 'K', 'L']
specs = ['FK', 'OE', 'FM', 'MN']
font = {'family': 'normal',
'weight': 'bold',
'size': 12}
matplotlib.rc('font', **font)
for sp in specs:
for cl in classes:
data = win.getData(spec=sp, class_=cl)
hist, bins = np.histogram(
data, bins=[2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5], range=(1.0, 6.0))
bins_ = bins
bins = (bins[:-1] + bins[1:]) / 2
# print(bins)
# print(hist)
plt.plot(bins, hist)
# plt.show()
# figure = plt.gcf() # get current figure
# figure.set_size_inches(12, 12)
# plt.savefig('/home/luke/Documents/APPA/img/hists/' +
# "grades_" + cl + "_" + sp + '.png', bbox_inches='tight',
# dpi=300)
# plt.clf()
plt.show()
import window_s_p_ft as win
import numpy as np
import matplotlib.pyplot as plt
from sklearn.decomposition import PCA, KernelPCA
def removeNZ(arr, row=1):
mask = np.any(np.equal(arr, None) | np.equal(arr, 0), axis=row)
return arr[~mask]
meanop = False
cl = None
data = win.getData(class_=cl, spare=True)
x = [1, 2, 3, 4, 5]
if meanop:
y = np.zeros((len(data), 5))
for ii in x:
data = win.getData(sems='=' + str(ii), class_=cl, spare=True)
for jj, s in enumerate(data):
try:
if np.mean(s) >= 3.0:
y[jj, ii - 1] = np.mean(s)
else:
raise
except:
y[jj, ii - 1] = 0.
y = removeNZ(y)
else:
# # accumulate([1,2,3,4,5]) --> 1 3 6 10 15
# # accumulate([1,2,3,4,5], operator.mul) --> 1 2 6 24 120
# it = iter(iterable)
# try:
# total = next(it)
# except StopIteration:
# return
# yield total
# for element in it:
# total = func(total, element)
# yield total
'''PCA'''
pca = PCA(whiten=False)
data = win.getData()
# win.shuffleIt(data, 2)
# win.shuffleIt(data, 1)
pca.fit(data)
'''plot'''
# expl_var_cumultative = [x / max(list(accumulate(pca.explained_variance_))) for x in list(accumulate(pca.explained_variance_))]
# plt.plot(range(len(pca.explained_variance_)), expl_var_cumultative,
# 'bo-', label="real")
ndims = range(1, len(pca.explained_variance_ratio_)+1)
expl_var_cumultative = list(accumulate(pca.explained_variance_ratio_))
plt.plot(ndims, expl_var_cumultative, 'r*', label='real - after PCA', markersize=10)
#
var = []
for x in range(27):
var.append(pca.get_covariance()[x][x])
var_r = var / sum(var)
'Laboratorium fizyki 2': ('Physics Laboratory 2', 'PL2'),
'Analiza matematyczna 1': ('Mathematical Analysis 1', 'MA1'),
'Mechanika': ('Mechanics', 'M')
}
font = {'family': 'normal',
'weight': 'bold',
'size': 22}
matplotlib.rc('font', **font)
matplotlib.rcParams['ps.useafm'] = True
matplotlib.rcParams['pdf.use14corefonts'] = True
matplotlib.rcParams['text.usetex'] = True
fig, ax = plt.subplots(1)
data = win.getData()
lr = LR()
'''average of a student in function of their first principal component'''
# pca_0 = PCA(n_components=1)
# data_0 = pca_0.fit_transform(data)
# s_avs = []
# for s in data:
# s_avs.append(np.mean(s))
# lr.fit(data_0, s_avs)
# pr = lr.predict(data_0)
# plt.plot(data_0, s_avs, 'o', label='students')
# plt.plot(data_0, pr, '-', label='fit', linewidth=3.0)
# plt.legend()
# plt.xlabel('value of first principal component for a student')
# plt.ylabel('mean value of student\'s grades')
