def main():
# get dataset
data = pd.read_pickle("cluster.pkl")
data_np = data.values
# get mean
mean = PCA.calc_mean(data_np)
U = PCA.getU("PCA_eigen_cluster.pkl")
# get error for data space
error = []
featureSpace = []
prevError = sys.maxint
reconstructError = 0.0
k = 0
# find smallest feature space to reduce data set
for k in range(10):
print "k: " + str(k)
prevError = reconstructError
newSpace, eigen_vectors = PCA.reduce(data_np, k, U.values, mean)
reconstructError = PCA.reconstruction_error(newSpace, data_np, eigen_vectors, mean, k)
print "reconstr error: " + str(reconstructError)
error.append(reconstructError)
featureSpace.append(k)
print "Smallest feature space size: " + str(k)
plt.plot(featureSpace, error, marker=".")
plt.ylabel("Reconstruction Error")
plt.xlabel("Size of Reduced Feature Space")
plt.title("Size of Reduced Feature Space vs Reconstruction Error")
plt.savefig("Error for PCA Cluster")
def main():
global group_num
# get parser
k = int(sys.argv[1])
print 1
print 2
train = pd.read_pickle("cluster.pkl")
reduced_train = PCA.reduce(train.values, 50,
PCA.getU("PCA_eigen_cluster.pkl").values,
PCA.calc_mean(train.values))
print 3
cluster_center, cluster_idx = cluster(reduced_train, k)
print 4
print cluster_center
print cluster_center.shape
print cluster_idx
print 5
articles = train.index.values
groupings = {}
for i in range(k):
group_num = i
b = np.apply_along_axis(isInGroup, 0, cluster_idx)
groupings[i] = articles[b]
print(groupings)
for key in groupings:
print groupings[key].shape
def confirm_PCA(self, event):
self.fig_PCA.clear()
self.checkedPCAStrings = self.PCA_selection.GetCheckedStrings()
self.pca_color = self.color_on_pca.GetValue()
self.pca_shape = self.shape_on_pca.GetValue()
self.key_headers_PCA = [
self.x_axis_selection.GetValue(),
self.y_axis_selection.GetValue(), self.checkedPCAStrings,
self.pca_color,
self.size_slider_PCA.GetValue(), self.pca_shape,
self.label_points_pca.GetValue()
]
if self.data_been_filtered:
self.fig_PCA = pca.pca_(self.dataFiltered, self.key_headers_PCA,
self.fig_PCA, self.CLR_check.GetValue(),
self.arrows_check.GetValue(),
self.samples_check.GetValue(),
self.colordict, self.shapedict)
else:
self.fig_PCA = pca.pca_(self.data, self.key_headers_PCA,
self.fig_PCA, self.CLR_check.GetValue(),
self.arrows_check.GetValue(),
self.samples_check.GetValue(),
self.colordict, self.shapedict)
self.PCA_plot = self.fig_PCA
self.canvas2.draw()
self.confirm_btn_PCA.SetLabelText("Update Graph")
self.PCA_button.Enable(True)
def eigenface(trainData, testData, dataVariety):
# standardize train data
dropTrainData = trainData.drop("variety", axis=1)
trainMean = dropTrainData.sum()
trainMean = trainMean.values.reshape([dropTrainData.shape[1], 1])
trainMean = trainMean / dropTrainData.shape[0]
newtrainData = PCA.normalize(trainData, trainMean)
# calculate xT * x and its eigenvector
normTrainData = newtrainData.drop("variety", axis=1)
normTrainData = np.array(normTrainData)
X = np.transpose(normTrainData)
tempMat = np.zeros([X.shape[1], X.shape[1]])
np.matmul(np.transpose(X), X, tempMat)
eigValX, eigVecX = np.linalg.eigh(tempMat)
# calculate X * eigenvector
newEigVecX = np.zeros([X.shape[0], eigVecX.shape[1]])
newEigVecX = np.matmul(X, eigVecX)
# normalize eigenvector
newEigVecX = np.transpose(newEigVecX)
length = np.linalg.norm(newEigVecX, axis=1)
for i in range(newEigVecX.shape[0]):
newEigVecX[i] /= length[i]
normEigVec = np.transpose(newEigVecX)
# calculate A
L = 20
maxEigIdx = np.argsort(-eigValX)
A = []
for i in range(L):
A.append(normEigVec[:, maxEigIdx[i]])
A = np.array(A)
A = np.transpose(A)
newtestData = PCA.normalize(testData, trainMean)
# projection of train data
projTrainFrame = PCA.project(A, newtrainData)
# projection of test data
projTestFrame = PCA.project(A, newtestData)
# # classify test data by likelihood
# g1, testIdx1, success1, confusion_mat1 = Likelihood.likelihood(projTrainFrame, projTestFrame, dataVariety)
# Header.calAccuracy(success1, projTestFrame)
# Header.ROC_AUC(projTestFrame, dataVariety, g1, testIdx1)
# Header.drawConfusionMat(confusion_mat1, dataVariety)
# classify test data by bayes
names = []
for i in range(projTestFrame.shape[1] - 1):
names.append('0')
names.append('variety')
g2, testIdx2, success2, confusion_mat2 = Bayes.bayes(projTrainFrame, projTestFrame, dataVariety, names)
Header.calAccuracy(success2, projTestFrame)
Header.drawConfusionMat(confusion_mat2, dataVariety)
def main(runIndex=None):
print("Starting Main.main()")
# if the required directory structure doesn't exist, create it
makeDirectoryStructure(address)
# now start the GMM process
Load.main(address, filename_raw_data, runIndex, subsample_uniform,\
subsample_random, subsample_inTime, grid, conc, \
fraction_train, inTime_start, inTime_finish,\
fraction_nan_samples, fraction_nan_depths, cov_type,\
run_bic=False)
# loads data, selects train, cleans, centres/standardises, prints
PCA.create(address, runIndex, n_dimen, use_fPCA)
GMM.create(address, runIndex, n_comp, cov_type)
PCA.apply(address, runIndex)
GMM.apply(address, runIndex, n_comp)
# reconstruction (back into depth space)
Reconstruct.gmm_reconstruct(address, runIndex, n_comp)
Reconstruct.full_reconstruct(address, runIndex)
Reconstruct.train_reconstruct(address, runIndex)
# calculate properties
mainProperties(address, runIndex, n_comp)
def pca(self, X, dim=25):
"""
进行PCA降维
:param X: 图片
:param dim: 将维后图片维度
"""
pca = PCA(X)
output = pca.reduction(dim=25)
return output
def pcaOnMnist(training, dimension=700): principalComponents = PCA.pca(training, dimension) low, same = PCA.reduce(principalComponents, training) image2DInitial = vectorToImage(training[0], (28,28)) print same[0].shape image2D = vectorToImage(same[0], (28,28)) plt.imshow(image2DInitial, cmap=plt.cm.gray) plt.show() plt.imshow(image2D, cmap=plt.cm.gray) plt.show() print "done"
def prepareFMNISTData(scale=0, PCA_threshold=-1, Whitening=0, PCA_p=None):
mndata = MNIST('fashion_data')
imagesTrain, labelsTrain = mndata.load_training()
imagesTest, labelsTest = mndata.load_testing()
X_test = np.array(imagesTest)
y_test = np.array(labelsTest)
n = len(imagesTrain)
np.random.seed(RANDOM_SEED)
indices = np.random.permutation(n)
trainingIndex = indices[:int(4 * n / 5)]
validationIndex = indices[int(4 * n / 5):]
X_train = np.array(imagesTrain)[trainingIndex]
y_train = np.array(labelsTrain)[trainingIndex]
X_val = np.array(imagesTrain)[validationIndex]
y_val = np.array(labelsTrain)[validationIndex]
if (PCA_threshold != -1):
[Z_train, p, Xr, U, W] = PCA(X_train, PCA_threshold)
if PCA_p is not None: p = PCA_p
[Z_test, Xr] = project(X_test, U, p)
[Z_val, Xr] = project(X_val, U, p)
X_train = Z_train[:, :p]
X_val = Z_val[:, :p]
X_test = Z_test[:, :p]
print("PCA_Threshold = " + str(PCA_threshold) + ", P = " + str(p))
if (scale == 1):
mean = np.mean(X_train, axis=0)
X_train = X_train - mean
X_test = X_test - mean
X_val = X_val - mean
variance = np.var(X_train, axis=0)
X_train = X_train / np.sqrt(variance)
X_test = X_test / np.sqrt(variance)
X_val = X_val / np.sqrt(variance)
if (Whitening == 1):
[Z, p, X3, U, W] = PCA(X_train, 1.0)
X_train = whiteningTransform(X_train, W, U)
X_test = whiteningTransform(X_test, W, U)
X_val = whiteningTransform(X_val, W, U)
return (X_train, y_train, X_val, y_val, X_test, y_test)
def main():
train = pd.read_pickle("cluster.pkl")
reduced_data = PCA.reduce(train.values, 50,
PCA.getU("PCA_eigen_cluster.pkl").values,
PCA.calc_mean(train.values))
heterogeneity_k_means = []
heterogeneity_spectral = []
ks = range(1, 51)
spectral_laplacian = spectral.setup(train.values)
for k in ks:
print "k: " + str(k)
bestSSD_k_means = sys.maxint
bestSSD_spectral = sys.maxint
spectral_eigen = spectral.computeEigen(spectral_laplacian, k)
# do clustering 3 times for each k
for i in range(5):
print "i: " + str(i)
print "k_means"
cluster_center_k_means, cluster_idx_k_means = k_means.cluster(
reduced_data, k)
ssd_k_means = SSD(reduced_data, cluster_center_k_means,
cluster_idx_k_means)
if ssd_k_means < bestSSD_k_means:
bestSSD_k_means = ssd_k_means
print "Spectral"
cluster_center_spectral, cluster_idx_spectral = spectral.cluster(
spectral_eigen, k)
ssd_spectral = SSD(spectral_eigen, cluster_center_spectral,
cluster_idx_spectral)
if ssd_spectral < bestSSD_spectral:
bestSSD_spectral = ssd_spectral
# append best ssd
heterogeneity_k_means.append(bestSSD_k_means)
heterogeneity_spectral.append(bestSSD_spectral)
plt.figure(1)
plt.plot(ks, heterogeneity_k_means, marker=".")
plt.ylabel("Heterogeneity")
plt.xlabel("k")
plt.title("k vs Heterogeneity for k means")
plt.xticks(np.arange(0, max(ks), 2.0))
plt.savefig("heterogeneity_k_means_cluster.png")
plt.figure(2)
plt.plot(ks, heterogeneity_spectral, marker=".")
plt.ylabel("Heterogeneity")
plt.xlabel("k")
plt.title("k vs Heterogeneity for spectral")
plt.xticks(np.arange(0, max(ks), 2.0))
plt.savefig("heterogeneity_spectral_cluster.png")
def loadProjectPCA():
saveFileName = askopenfilename(initialdir = "/",title = "Select file",filetypes = (("Phenotype Files","*"),("all files","*.*")))
saveFileObject = open(saveFileName)
i = 0;
next = saveFileObject.readline()
PCADataRead = next
PCADataRead = PCADataRead.strip()
#reads through the text file and takes out the save data
while i < 5:
if(i == 0):
PCAPhenoRead = saveFileObject.readline()
PCAPhenoRead = PCAPhenoRead.rstrip('\n')
if(i == 1):
columnPCAEvec1read = saveFileObject.readline()
columnPCAEvec1read = columnPCAEvec1read.strip()
if(i == 2):
columnPCAEvec2read = saveFileObject.readline()
columnPCAEvec2read = columnPCAEvec2read.strip()
if(i == 3):
columnPCAEvec3read = saveFileObject.readline()
columnPCAEvec3read = columnPCAEvec3read.strip()
if(i == 4):
columnPCAPhenoRead = saveFileObject.readline()
columnPCAPhenoRead = columnPCAPhenoRead.strip()
i = i + 1
#Creates a new plot when loaded
PCAPlotterLoad = PCA.PCAPlotter()
PCAPlotterLoad.readFile1(PCAPhenoRead)
PCAPlotterLoad.readFile2(PCADataRead)
PCAPlotterLoad.connectFilesAddColour(int(columnPCAEvec1read), int(columnPCAEvec2read), int(columnPCAEvec3read), int(columnPCAPhenoRead))
PCAPlotterLoad.plotGraph()
def prepare_data(self, test_data_perc=0.2):
self.data = shuffle(self.data)
self.data_np_arr1 = self.data.values
self.features = np.shape(self.data_np_arr1)[1] - 1
if self.pca_decompose:
self.PCAObj = PCA.PCADecompose(self.num_feature_to_decompose)
d_x = self.data_np_arr1[:, 0:self.features]
d_y = self.data_np_arr1[:, self.features:]
data_new = self.PCAObj.transform_data(d_x, d_y)
self.data_np_arr = data_new
self.features = np.shape(self.data_np_arr)[1] - 1
else:
self.data_np_arr = self.data_np_arr1
train, test = train_test_split(self.data_np_arr,
test_size=test_data_perc)
self.X_train = train[:, 0:self.features]
self.Y_train = train[:, self.features:]
validation, test = train_test_split(test, test_size=0.5)
self.X_validation = validation[:, 0:self.features]
self.Y_validation = validation[:, self.features:]
self.X_test = test[:, 0:self.features]
self.Y_test = test[:, self.features:]
print("X Train shape ", np.shape(self.X_train))
print("Y Train shape ", np.shape(self.Y_train))
print("X Validation shape ", np.shape(self.X_validation))
print("Y Validation shape ", np.shape(self.Y_validation))
print("X Test shape ", np.shape(self.X_test))
print("Y Test shape ", np.shape(self.Y_test))
def treat_data(self, data):
data, name = data.drop(
['participant'], axis=1).as_matrix(), data['participant'].tolist()
data = PCA.PCA(data) # PCA it
return data, name
def callPCA(dataset, attrNum, k):
X, y = g.splitXandY(dataset, attrNum, len(dataset))
print(k)
finalData, reconMat = PCA.pca(X, k)
# PCA.plotBestFit(finalData, reconMat, y)
return np.hstack((finalData, y)), np.hstack((reconMat, y))
def read(PCA_v = True, covariances = None, begin=0, end=10):
prev = None
X = None
Y = None
for i in range(begin,end):
sample = dirList_2[i][-10:]
mat_string = dirList_2[i] + sample + '.mat'
arousal_string = dirList_2[i] + sample
print("Working on sample nr: ", i, )
x = sio.loadmat(mat_string)['val']
if (PCA_v):
ann = wfdb.rdann(arousal_string, 'arousal')
prev = PCA.get_matrices(x,ann,prev)
else:
arousal_string += '-arousal.mat'
f = h5py.File(arousal_string, 'r')
y = f['data']['arousals'][:]
X,Y = extract_features(x,np.transpose(y),covariances,X,Y)
print("-----------------------")
if(PCA_v):
return prev
return X,Y
def construct_mnist():
# 主要成分
K = 1
# 手写数字
num = 9
# 样本数量
N = 100
print('read from MNIST_test.txt...')
data = np.loadtxt('dataset/MNIST_test.txt', delimiter=',')
# 切分 标签和 特征
Y = data[:, 0]
X = data[:, 1:]
######单一数字######
# 获得某个手写数字的所有下标
indices = np.argwhere(Y == num)
# 获得所有该数字的样本
X_n = X[indices][:N]
# 展示原始图片
slice_imgs(X_n, 'original')
# 主成分分析 特征重建
X_n_k, re_X_n = PCA(np.asarray(X_n).reshape((N, 784)), K)
# 展示重建图片
slice_imgs(np.real(re_X_n), 'reconstruct')
# 每张图片的信噪比
print('SNR of each picture...')
print([compute_SNR(X_n[i], re_X_n[i]) for i in range(N)])
def preprocess(feature_abstract_method):
# X_raw = raw_data.iloc[:, 1:]
# y_raw = raw_data['label']
# X_train, X_test, y_train, y_test = train_test_split(X_raw, y_raw, test_size=0.2)
# X_train.to_csv('x_train.csv')
# X_test.to_csv('x_test.csv')
# y_train.to_csv('y_train.csv')
# y_test.to_csv('y_test.csv')
X_train = pd.read_csv('x_train.csv', index_col=0)
X_test = pd.read_csv('x_test.csv', index_col=0)
y_train = pd.read_csv('y_train.csv', index_col=0, header=None)
y_test = pd.read_csv('y_test.csv', index_col=0, header=None)
if (feature_abstract_method == 'LBP'):
X_train = LBP.lbp_extract(X_train)
X_test = LBP.lbp_extract(X_test)
elif (feature_abstract_method == 'PCA'):
X_train, X_test = PCA.PCA_extract(X_train, X_test)
elif (feature_abstract_method == 'skeleton'):
X_train = SKELETON.skeleton_extract(X_train)
X_test = SKELETON.skeleton_extract(X_test)
elif (feature_abstract_method == 'grid'):
X_train = GRID.grid_extract(X_train)
X_test = GRID.grid_extract(X_test)
elif (feature_abstract_method == 'hog'):
X_train = HOG.hog_extract(X_train)
X_test = HOG.hog_extract(X_test)
return X_train, X_test, y_train, y_test
def get_feature_mattrix():
meal_files = [
'MealNoMealData/mealData1.csv', 'MealNoMealData/mealData2.csv',
'MealNoMealData/mealData3.csv', 'MealNoMealData/mealData4.csv',
'MealNoMealData/mealData5.csv',
]
meal_data = parse_and_interpolate(meal_files)
data = meal_data[0]
fft_features = get_fft_features(data)
entropy_feature = get_entropy(data)
moving_avg_features = moving_avg(data)
normal_skew_feature = normal_skew(data)
for index in range(1, len(meal_data)):
data = meal_data[index]
fft_features = np.concatenate((fft_features, get_fft_features(data)), axis=0)
moving_avg_features = np.concatenate((moving_avg_features, moving_avg(data)), axis=0)
entropy_feature = np.concatenate((entropy_feature, get_entropy(data)), axis=0)
normal_skew_feature = np.concatenate((normal_skew_feature, normal_skew(data)), axis=0)
feature_mattrix = np.concatenate((moving_avg_features, entropy_feature, fft_features, normal_skew_feature), axis=1)
np.set_printoptions(suppress=True)
PCA = p.cal_PCA()
feature_mattrix = PCA.performPCA(feature_mattrix)
return feature_mattrix, PCA
def getPC(coords, outFileName='ligBox.pdb'):
size = coords.size
shape = coords.shape
if shape != (1, 3):
if size != 0:
eigenVectors, eigenValues = PCA.princomp(coords.T,
numpc=3,
getEigenValues=True)
com = coords.mean(axis=0)
projection = numpy.dot(coords - com, eigenVectors)
signs = numpy.sign(numpy.sign(projection).sum(axis=0))
signs2 = numpy.sign(
projection[numpy.abs(projection).argmax(axis=0)].diagonal())
signs[signs == 0] = signs2[signs == 0]
eigenVectors = eigenVectors * signs
vectors = com + eigenVectors.T * numpy.atleast_2d(
numpy.sqrt(eigenValues)).T
elif size == 0:
com = numpy.zeros((3))
vectors = numpy.zeros((3, 3))
else:
com = coords.flatten()
vectors = numpy.zeros((3, 3))
# pdbBoxWriter(com, vectors, outFileName)
return com, vectors
def draw_2d():
x2 = PCA(data_set.x, 2)
plt.figure()
plt.scatter(x2[0, :50],
x2[1, :50],
marker='x',
color='m',
s=30,
label='Iris-setosa')
plt.scatter(x2[0, 50:100],
x2[1, 50:100],
marker='+',
color='c',
s=50,
label='Iris-versicolor')
plt.scatter(x2[0, 100:150],
x2[1, 100:150],
marker='o',
color='r',
s=15,
label='Iris-virginica')
plt.legend()
plt.title('PCA of IRIS k = 2')
plt.show()
def small_data_test():
test_1 = PCA.pca_function([[1,0,1,1],[0,1,2,0],[1,1,2,0],[0,1,2,1]],2)
result = [[0.8333, -0.5, -0.1666, -0.1666], [0.0, 0.0, 0.7071, -0.7071]]
if test_1:
return("All OK")
else:
return("something went wrong")
def main():
data = pd.read_csv('/Users/bytedance/Desktop/AI/data/wine.data.csv')
label = data["0"].to_numpy()
del data["0"]
data = data / data.max(axis=0) # normalize
data = data.to_numpy()
# PCA
K = 3
for thresh in [0.9, 0.8, 0.7, 0.6, 0.5]:
new_data, _, _ = PCA.PCA(data.T, 2, True, thresh)
ndim = new_data.shape[1]
print(
f"======== kmeans, K = {K}, ndim = {ndim}, thresh = {thresh} ========="
)
if ndim == 2:
plt.figure(1)
plt.scatter(new_data[:, 0], new_data[:, 1], s=50)
S, RI, predicted_label = Kmeans.test_kmeans(new_data, label, K)
df_data = pd.DataFrame(new_data)
df_label = pd.DataFrame(predicted_label)
result_df = pd.concat([df_label, df_data], axis=1)
result_df.to_csv(f"./result_ndim{ndim}_K{K}.csv")
def plotTestSet3(filepath):
n = 1000 # number of points to create
xcord0 = []; ycord0 = []
xcord1 = []; ycord1 = []
xcord2 = []; ycord2 = []
markers = []
colors = []
fw = open(filepath, 'w')
for i in range(n):
groupNum = int(3 * numpy.random.uniform())
[r0, r1] = numpy.random.standard_normal(2)
if groupNum == 0:
x = r0 + 16.0
y = 1.0 * r1 + x
xcord0.append(x)
ycord0.append(y)
elif groupNum == 1:
x = r0 + 8.0
y = 1.0 * r1 + x
xcord1.append(x)
ycord1.append(y)
elif groupNum == 2:
x = r0 + 0.0
y = 1.0 * r1 + x
xcord2.append(x)
ycord2.append(y)
fw.write("%f\t%f\t%d\n" % (x, y, groupNum))
fw.close()
fig = plt.figure()
ax = fig.add_subplot(211)
ax.scatter(xcord0, ycord0, marker='^', s=90)
ax.scatter(xcord1, ycord1, marker='o', s=50, c='red')
ax.scatter(xcord2, ycord2, marker='v', s=50, c='yellow')
ax = fig.add_subplot(212)
myDat = PCA.loadDataSet(filepath)
lowDDat, reconDat = PCA.pca(myDat[:, 0:2], 1)
label0Mat = lowDDat[numpy.nonzero(myDat[:, 2] == 0)[0], :2][0] # get the items with label 0
label1Mat = lowDDat[numpy.nonzero(myDat[:, 2] == 1)[0], :2][0] # get the items with label 1
label2Mat = lowDDat[numpy.nonzero(myDat[:, 2] == 2)[0], :2][0] # get the items with label 2
# ax.scatter(label0Mat[:,0],label0Mat[:,1], marker='^', s=90)
# ax.scatter(label1Mat[:,0],label1Mat[:,1], marker='o', s=50, c='red')
# ax.scatter(label2Mat[:,0],label2Mat[:,1], marker='v', s=50, c='yellow')
ax.scatter(label0Mat[:, 0], numpy.zeros(numpy.shape(label0Mat)[0]), marker='^', s=90)
ax.scatter(label1Mat[:, 0], numpy.zeros(numpy.shape(label1Mat)[0]), marker='o', s=50, c='red')
ax.scatter(label2Mat[:, 0], numpy.zeros(numpy.shape(label2Mat)[0]), marker='v', s=50, c='yellow')
plt.show()
def predict(data, components):
pca, train_features, train_results, test_features, test_results, values = PCA.transform(
components)
clf = svm.SVC(kernel="rbf", gamma='auto', probability=True)
PCA_data = pca.transform(data)
clf.fit(train_features, train_results)
outcome = clf.predict_proba(PCA_data)
return (outcome, test_features, test_results, values)
def predict(data, components):
pca, train_features, train_targets, test_features, test_results, values = PCA.transform(
components)
model = GaussianNB()
# Train the model using the training sets
model.fit(train_features, train_targets)
PCA_data = pca.transform(data)
predicted = model.predict_proba(PCA_data)
return (predicted, test_features, test_results, values)
def main():
global group_num
k = int(sys.argv[1])
train = pd.read_pickle("tfidf_small.pkl")
reduced_data = PCA.reduce(train.values, 50, PCA.getU("PCA_eigen_cluster.pkl").values, PCA.calc_mean(train.values))
laplacian = setup(train.values)
eigen_vectors = computeEigen(laplacian, k)
cluster_center, cluster_idx = cluster(eigen_vectors, k)
# display the data:
articles = train.index.values
groupings = {}
for i in range(k):
group_num = i
b = np.apply_along_axis(isInGroup, 0, cluster_idx)
groupings[i] = articles[b]
print(groupings)
for key in groupings:
print groupings[key].shape
def main(run=None):
print("Starting Main.main()")
# Now start the GMM process
Load.main(address, dir_raw_data, run, subsample_uniform, subsample_random,\
subsample_inTime, grid, conc, fraction_train, inTime_start,\
inTime_finish, fraction_nan_samples, fraction_nan_depths, dtype)
#Load.main(address, filename_raw_data, run, subsample_uniform, subsample_random,\
# Loads data, selects Train, cleans, centres/standardises, prints
PCA.create(address, run, n_dimen) # Uses Train to create PCA, prints results, stores object
GMM.create(address, run, n_comp) # Uses Train to create GMM, prints results, stores object
PCA.apply(address, run) # Applies PCA to test dataset
GMM.apply(address, run, n_comp) # Applies GMM to test dataset
# Reconstruction
Reconstruct.gmm_reconstruct(address, run, n_comp) # Reconstructs the results in original space
Reconstruct.full_reconstruct(address, run)
Reconstruct.train_reconstruct(address, run)
# new stuff DD 27/08/18, after seeing updates on DJ github
#mainProperties(address, runIndex, n_comp)
# Plotting -- first commented out DD
#Plot.plotMapCircular(address, address_fronts, run, n_comp)
#Plot.plotPosterior(address, address_fronts, run, n_comp, plotFronts=True)
Plot.plotPostZonal(address, run, n_comp, dtype, plotFronts=False) ## zonal frequencies
#Plot.plotPosterior(address, run, n_comp, dtype, plotFronts=False) ## works but data overlaps spatially...
Plot.plotProfileClass(address, run, n_comp, dtype, 'uncentred')
Plot.plotProfileClass(address, run, n_comp, dtype, 'depth')
Plot.plotGaussiansIndividual(address, run, n_comp, dtype, 'reduced')#uncentred')#'depth')#reduced')
# Plot.plotGaussiansIndividual(address, run, n_comp, 'depth') # ERROR NOT WOKRING PROPERLY
# Plot.plotGaussiansIndividual(address, run, n_comp, 'uncentred') # ERROR NOT WOKRING PROPERLY
#Plot.plotProfile(address, run, dtype, 'original') # these run just fine but are huge and unhelpful
Plot.plotProfile(address, run, dtype, 'uncentred')
Plot.plotWeights(address, run, dtype)
def confirm_scatter(self, event):
self.fig_scatter.clear()
self.scatter_color = self.color_on_scatter.GetValue()
self.scatter_shape = self.shape_on_scatter.GetValue()
size = self.size_slider_scatter.GetValue()
self.key_headers_scatter = [
self.scatter_color,
self.x_name_scatter.GetValue(),
self.y_name_scatter.GetValue(),
self.z_name_scatter.GetValue(),
self.x1_name_scatter.GetValue(),
self.y1_name_scatter.GetValue(),
self.z1_name_scatter.GetValue(), size, self.scatter_shape,
self.label_points_scatter.GetValue()
]
limits = [
self.xLowLim.GetValue(),
self.xUpLim.GetValue(),
self.yLowLim.GetValue(),
self.yUpLim.GetValue()
]
log_scales = [
self.scatter_log_x.GetValue(),
self.scatter_log_y.GetValue()
]
if self.data_been_filtered:
if not len(self.x_name_scatter.GetValue()) == 0 and not len(
self.y_name_scatter.GetValue()) == 0:
self.fig_scatter = pca.blank_scatter_plot(
self.dataFiltered, self.key_headers_scatter, limits,
self.fig_scatter, log_scales, self.colordict,
self.shapedict)
else:
if not len(self.x_name_scatter.GetValue()) == 0 and not len(
self.y_name_scatter.GetValue()) == 0:
self.fig_scatter = pca.blank_scatter_plot(
self.data, self.key_headers_scatter, limits,
self.fig_scatter, log_scales, self.colordict,
self.shapedict)
self.scatter_plot = self.fig_scatter
self.canvas3.draw()
self.confirm_btn_scatter.SetLabelText("Update Graph")
self.scatter_button.Enable(True)
def main():
percentages = dict()
for PC in range(1, 274):
PCA.init(PC)
img = cv2.imread("c1.jpg", cv2.IMREAD_GRAYSCALE)
kp1, des1 = get_descriptors(img)
img2 = cv2.imread("c2.jpg", cv2.IMREAD_GRAYSCALE)
kp2, des2 = get_descriptors(img2)
# Matching between descriptors
bf = cv2.BFMatcher(cv2.NORM_HAMMING, crossCheck=True)
matches = sorted(bf.match(des1, des2),
key=lambda match: match.distance)
# # Plot keypoints
# img4 = cv2.drawKeypoints(img, kp1, outImage=None)
# img5 = cv2.drawKeypoints(img2, kp2, outImage=None)
# f, axarr = plt.subplots(1, 2)
# axarr[0].imshow(img4)
# axarr[1].imshow(img5)
# # plt.show()
# # Plot matches
# img3 = cv2.drawMatches(img, kp1, img2, kp2, matches, flags=2, outImg=None)
# plt.imshow(img3)
# # plt.show()
# Calculate score
score = 0
for match in matches:
score += match.distance
score_threshold = 33
k = 100 - (score / len(matches))
if score / len(matches) < score_threshold:
print("PC " + str(PC) + ": Matches with " + str(k) + "%")
percentages.update({PC: (k, "Yes")})
else:
print("PC " + str(PC) + ": No Match with " + str(k) + "%")
percentages.update({PC: (k, "No")})
pickle_out = open("percentages.pickle", "wb")
pickle.dump(percentages, pickle_out)
pickle_out.close()
print('It took', time.time() - start, 'seconds.')
def test_PCA():
X = np.empty((100, 2))
X[:, 0] = np.random.uniform(0., 100., size=100)
X[:, 1] = 0.75 * X[:, 0] + 3. + np.random.normal(0, 10., size=100)
pca = PCA(n_components=2)
pca.fit(X)
print(pca.components_)
# 降维
pca = PCA(n_components=1)
pca.fit(X)
X_reduction = pca.transform(X)
print(X_reduction.shape)
X_restore = pca.inverse_transform(X_reduction)
print(X_restore.shape)
plt.scatter(X[:, 0], X[:, 1], color='b')
plt.scatter(X_restore[:, 0], X_restore[:, 1], color='r', alpha=0.5)
plt.show()
def RunTrainLDA(infile, pcaFile, ldaFile):
import cPickle
fp = open(infile, "r")
dataset = cPickle.load(fp)
subjID = cPickle.load(fp)
fp.close()
pca = PCA(dataset)
pca_proj = pca.compute()
np.save(pcaFile, pca_proj)
lda_proj = []
lda = LDA(dataset, subjID, pca_proj)
projData = lda.projectData()
lda_proj = lda.train(projData)
np.save(ldaFile, lda_proj)
def pca_and_call(features=all_features,
fn=using_distance_to_original,
dim=2,
k=-1):
data = np.array([f[1] for f in features])
# Note: this warps the variable data
data_rescaled = PCA.PCA(data, dim)
features = [(features[i][0], data_rescaled[i])
for i in range(len(features))]
if k > 0:
return fn(features, k)
return fn(features)
def pcaOnMnist(training, dimension=700): mean, principalComponents = PCA.pca(training, dimension) low, same = PCA.reduce(principalComponents, training, mean, noSame=False) print "low[0].shape" print low[0].shape image2DInitial = vectorToImage(training[0], (28,28)) print same[0].shape image2D = vectorToImage(same[0], (28,28)) image2DLow = vectorToImage(low[0], (20,20)) plt.imshow(image2DLow, cmap=plt.cm.gray) plt.show() plt.imshow(image2DInitial, cmap=plt.cm.gray) plt.show() plt.imshow(image2D, cmap=plt.cm.gray) plt.show() print "done" return low
def pcaSklearn(training, dimension=700): pca = PCA(n_components=dimension) pca.fit(training) low = pca.transform(training) same = pca.inverse_transform(low) print "low[0].shape" print low[0].shape image2DInitial = vectorToImage(training[0], (28,28)) print same[0].shape image2D = vectorToImage(same[0], (28,28)) image2DLow = vectorToImage(low[0], (20,20)) plt.imshow(image2DLow, cmap=plt.cm.gray) plt.show() plt.imshow(image2DInitial, cmap=plt.cm.gray) plt.show() plt.imshow(image2D, cmap=plt.cm.gray) plt.show() print "done" return low
def do ( Obs_ij, run_dir ) :
# PCA
N_PCs, V_nj, U_in = PCA.do_PCA( Obs_ij, run_dir )
print '# ---------------------------------------------------'
print '# U_in'
# print samples
for ii in xrange( len( U_in ) ):
for nn in xrange( len( U_in.T ) ):
print U_in[ii][nn],
print ''
print ''
# shrink wrap
A_mn = shrinkwrap.do_shrinkwrap ( U_in, N_PCs, run_dir )
def PlotXference_AVG():
global EyeData
global Events
# Change these into arrays and prelocate size
inference = []
noference = []
for idx in range(0, len(Events)):
# inference.append(FindSlices(EyeData[idx], Events[idx], 'Inference', trialTypes))
# noference.append(FindSlices(EyeData[idx], Events[idx], 'Noference', trialTypes))
inference.append(FindSlices(EyeData[idx], Events[idx], "Inference", "typeB", 1))
noference.append(FindSlices(EyeData[idx], Events[idx], "Noference", "typeA", 1))
fig = plt.figure()
fig.suptitle("Gaze X position")
ax = fig.add_subplot(121)
ax2 = fig.add_subplot(122)
for trial in inference:
ax.plot(trial)
ax.set_ylim(0, 2000)
ax.set_ylabel("X coordinate of gaze position")
ax.set_xlabel("Inference trials \n x time course in ms")
for trial in noference:
ax2.plot(trial)
ax2.set_ylim(0, 2000)
ax2.set_xlabel("No inference trials \n x time course in ms")
ticks = ax.get_xticks() * 16
ax.set_xticklabels(ticks.astype(int))
ax2.set_xticklabels(ticks.astype(int))
inf_cat = [1 for i in range(1, len(inference) + 1)]
nof_cat = [0 for i in range(1, len(noference) + 1)]
known_cat = np.hstack((np.array(inf_cat), np.array(nof_cat)))
ferences = np.vstack((inference, noference))
PlotAverage_X(np.array(inference), np.array(noference))
#
components = PCA.myPCA(ferences, known_cat)
components = components * 1000
LOG_REG.logReg(known_cat, components)
# components_tmp = components *1000
np.savetxt("eda_pcaResults.csv", np.hstack((known_cat.reshape(len(known_cat), 1), components)), delimiter=",")
def plotSecomPCA(filepath):
dataMat = PCA.replaceNanWithMean(filepath)
# below is a quick hack copied from pca.pca()
meanVals = numpy.mean(dataMat, axis=0)
meanRemoved = dataMat - meanVals # remove mean
covMat = numpy.cov(meanRemoved, rowvar=0)
eigVals, eigVects = numpy.linalg.eig(numpy.mat(covMat))
eigValInd = numpy.argsort(eigVals) # sort, sort goes smallest to largest
eigValInd = eigValInd[::-1] # reverse
sortedEigVals = eigVals[eigValInd]
total = sum(sortedEigVals)
varPercentage = sortedEigVals / total * 100
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(1, 21), varPercentage[:20], marker='^')
plt.xlabel('Principal Component Number')
plt.ylabel('Percentage of Variance')
plt.show()
def getPC(coords, outFileName='ligBox.pdb'): size = coords.size shape = coords.shape if shape != (1,3): if size != 0 : eigenVectors, eigenValues = PCA.princomp(coords.T, numpc=3, getEigenValues=True) com = coords.mean(axis=0) projection = numpy.dot(coords-com,eigenVectors) signs = numpy.sign(numpy.sign(projection).sum(axis=0)) signs2 = numpy.sign(projection[numpy.abs(projection).argmax(axis=0)].diagonal()) signs[signs==0] = signs2[signs==0] eigenVectors = eigenVectors*signs vectors = com + eigenVectors.T * numpy.atleast_2d(numpy.sqrt(eigenValues)).T elif size == 0: com = numpy.zeros((3)) vectors = numpy.zeros((3,3)) else: com = coords.flatten() vectors = numpy.zeros((3,3)) # pdbBoxWriter(com, vectors, outFileName) return com, vectors
import numpy as np
import sys
import PCA
import shrinkwrap
INFILE = 'data/raddata_2_norm'
#===================================================
if __name__ == "__main__":
# input data
Obs_ij = np.loadtxt(INFILE)
n_slice = len(Obs_ij)
# PCA
N_PCs, V_nj, U_in = PCA.do_PCA( Obs_ij )
# print 'Principal Components (V_lj) : '
# print V_nj
# print ''
# print 'Coefficients (U_il) : '
# print U_in
# print ''
print '# ---------------------------------------------------'
print '# U_in'
# print samples
for ii in xrange( len( U_in ) ):
for nn in xrange( len( U_in.T ) ):
print U_in[ii][nn],
print ''
print ''
print '\nERROR : Unknown slice type\n'
sys.exit()
# Determine initial values for fitting parameters
if KNOWN_ANSWER :
print 'Initial values from known answers'
X0_albd_kj = np.loadtxt( ALBDFILE ).T
X0_area_lk = np.loadtxt( AREAFILE )
else:
# PCA
print 'Performing PCA...'
n_pc, V_nj, U_in, M_j = PCA.do_PCA( Obs_ij, E_cutoff=1e-2, run_dir=run_dir )
n_type = n_pc + 1
# shrinkwrap
print 'Perfoming shrink-wrapping...'
# N ( = n_PC ): number of principle components
# M ( = n_PC + 1 ) : number of vertices
A_mn, P_im = shrinkwrap.do_shrinkwrap( U_in, n_pc, run_dir=run_dir )
X0_albd_kj = np.dot( A_mn, V_nj )
X0_albd_kj = X0_albd_kj + M_j
if ( SLICE_TYPE=='time' ) :
X0_area_lk = P_im
else :
X0_area_lk = np.ones( n_slice*n_type ).reshape([n_slice, n_type])/(n_type*1.0)
# Save initial condutions
if __name__ == "__main__":
# Load input data
Obs_ij = np.loadtxt( INFILE_DIR + INFILE )
Time_i = np.arange( len( Obs_ij ) ) / ( 1.0 * len( Obs_ij ) )
n_band = len( Obs_ij.T )
# Initialization of Kernel
print 'Decomposition into time slices...'
n_slice = len( Time_i )
Kernel_il = np.identity( n_slice )
# PCA
print 'Performing PCA...'
n_pc, V_nj, U_in, M_j = PCA.do_PCA( Obs_ij, E_cutoff=1e-2, output=False, run_dir=OUTFILE_DIR )
V_nj[0] = -1. * V_nj[0]
U_in.T[0] = -1. * U_in.T[0]
V_nj[1] = -1. * V_nj[1]
U_in.T[1] = -1. * U_in.T[1]
n_type = n_pc + 1
if n_type != 3 :
print 'ERROR: This code is only applicable for 3 surface types!'
sys.exit()
U_iq = np.c_[ U_in, np.ones( len( U_in ) ) ]
PC1_limit = [XMIN,XMAX] # manually set for now
PC2_limit = [YMIN,YMAX] # manually set for now
points_kn_list = []
data=np.vstack((x,y))
#mean, eigenvectors = cv2.PCACompute(npc, np.mean(npc, axis=0).reshape(1,-1))
#mlab_pca = mlabPCA(data.T)
sklearn_pca = PCA(n_components=2)
incPCA.append(sklearn_pca.fit_transform(data.T))'''
#print(incPCA[0].components_)
#spaja sve primere prvog sekutica u matricu gde su u jednom redu spojeni vektori koordinata lendmarkova (x,y) a u koloni razliciti primeri 14x80
data1=np.append(Persons[0].Incisors[0].normXY[:,0],Persons[0].Incisors[0].normXY[:,1])
for p in range(1,14):
data1=np.vstack((data1,np.append(Persons[p].Incisors[0].normXY[:,0],Persons[p].Incisors[0].normXY[:,1])))
eigenvalues, eigenvectors, mu=pca.pcaD(data1,3)
tEVectors=np.array((eigenvectors[0:40,:],eigenvectors[40:80,:])).T
ty=np.array((mu[0:40],mu[40:80])).T
'''
#spaja sve primere prvog sekutica u jednu x,y matricu 560x2
x=np.array([])
y=np.array([])
for p in range(0,14):
a=Persons[p].Incisors[0].normXY
x=np.append(x,(a[:,0]))
y=np.append(y,a[:,1])
data=np.vstack((x,y)).T
#Part One: Load Example Dataset
print 'One: ======== Load Example Dataset1 ... '
plt.plot(X[:,0],X[:,1],'bo')
plt.axis(xmin=0.5,xmax=6.5,ymin=2,ymax=8)
plt.title('Example Dataset1')
#Part Two: Principal Component Analysis
print 'Two: ================ Running PCA on example dataset...'
result=FN.featureNormalize(X)
X_norm=result[0]
mu=result[1]
res=PCA.pca(X_norm)
U=res[0]
S=res[1]
S=np.eye(S.shape[0])*S
print 'Top eigenvector: '
print 'U[:,0] = %f %f ' % (U[0,0],U[1,0])
print '(You should expect to see -0.707107, -0.707107)'
tmp1=mu+1.5*np.dot(S[0,0],U[:,0].transpose())
tmp2=mu+1.5*np.dot(S[1,1],U[:,1].transpose())
DL.drawLine(mu,tmp1,color='k',linewidth=2)
DL.drawLine(mu,tmp2,color='b',linewidth=2)
plt.show()
fig.savefig(file_name) if display == True: plt.show() plt.clf() def graph2d(data, display = True, file_name = None, verbose = True): fig, ax = plt.subplots() for code in np.unique(data[:,2]): x, y = zip(*data[data[:,2] == code][:,0:2]) ax.scatter(x, y, c = color_convert(code), marker = 'o') if file_name != None: fig.savefig(file_name) if display == True: plt.show() plt.clf() ''' Examples, in order, 3d plot of data, PCA, Isomap, LLE, LapEig ''' # graph3d(np.column_stack((npdata, color_code))) graph2d(np.column_stack((PCA.pca(npdata, dim = 2), color_code)), False, 'PCA') graph2d(np.column_stack((Isomap.isomap(npdata, load = 'C.npy'), color_code)), False, 'Isomap') graph2d(np.column_stack((LLE.lle(npdata), color_code)), False, 'LLE') graph2d(np.column_stack((LaplacianEigenmap.le(npdata), color_code)), False, 'LaplacianEigenmap') #Just a sanity check # from sklearn import manifold # x = manifold.SpectralEmbedding().fit_transform(X= npdata) # graph2d(np.column_stack((x, color_code)))
import PCA
from numpy import *
def loadData (fileAddress) :
"""
"""
file = open (fileAddress).readlines ()
data = []
for line in file :
data.append (map (float , line.strip().split()))
return mat (data)
if __name__ == '__main__' :
dataSet = loadData ('testSet.txt')
lowDimData , newData = PCA.pca (dataSet , 1)
PCA.showPca (dataSet , lowDimData , newData)
if 0:
#
# PCAT magic: Lifting the following from GMM.py in PCAT
#
import PCA, GMM
score_matrix, principal_components, means, stds, eigenvalues = \
PCA.PCA(catalogue, components_number=10)
principal_components_number=10
reduced_score_matrix = score_matrix[:,:principal_components_number]
mat, tmp, tmp1 = PCA.matrix_whiten(reduced_score_matrix, std=True)
#labels = GMM.gaussian_mixture(mat,upper_bound=5)
labels = GMM.gaussian_mixture(reduced_score_matrix,upper_bound=5)
colored_clusters = GMM.color_clusters( score_matrix, labels )
GMM.print_cluster_info(colored_clusters)
#sys.exit()
#
# PCA
#
#H = np.matrix(waveform_catalogue)
H = np.matrix(catalogue)
'robberies', 'robbbPerPop',
'assaults', 'assaultPerPop',
'burglaries', 'burglPerPop',
'larcenies', 'larcPerPop',
# 'autoTheft', 'autoTheftPerPop',
'arsons', 'arsonsPerPop',
'violentPerPop',
'nonViolPerPop',
]
from DataSet import *
from PCA import *
dataset = DataSet(data, names, drop_columns=drop_columns, fix_missing=FixMissing.DROPATTRIBUTES, rescale=Rescale.NORMALIZE)
print(dataset.X)
print(dataset.X.iloc[5,10])
pca = PCA(dataset)
pca.plot_rho()
pca.show()
plt.show()
print("\n\nstd:", dataset.X.std())
print("\n\nmean:", dataset.X.mean())
print("\n\nrange:", dataset.X.max()-dataset.X.min())
import vectorizeFiles as VF
import getFileNames as gf
import matplotlib.pyplot as plot
import numpy as np
# from feature_extractor import FeatureExtractor
# fe = FeatureExtractor(1)
# featurized = fe.featurizeFiles('../data')
# classNames, repubAndDemMatrix, labels = featurized[:3]
[repubAndDemMatrix,vectorizerRepubDem,labels]=VF.extractWordCounts(True,True,False)
k = 3
files=gf.getFileNames()
transformed = PCA.getPCAMat(repubAndDemMatrix, k)
repub=np.array([list(x) for i,x in enumerate(transformed) if labels[i]==1])
dem=np.array([list(x) for i,x in enumerate(transformed) if labels[i]==0])
plot.figure()
plot.scatter(repub[:,0],repub[:,1],c='r',marker='x')
plot.scatter(dem[:,0],dem[:,1],c='b',marker='x')
##plot.annotate(s=files[0],xy=transformed[0])
plot.savefig('results/images/VFPCA.png')
# plot.savefig('results/images/PCA.png')
'''
transformedWords=PCA.getPCAMat(repubAndDemMatrix.T, k)
vocab=vectorizerRepubDem.vocabulary_
indicesOfInterest=[]
f=open('wordsInterest.txt','r')
wordsOfInterest=[line.split()[0] for line in f]
import PCA
import EXTRAS
import numpy
dataMat = PCA.loadDataSet("E:/TestDatas/MachineLearningInAction/Ch13/testSet.txt")
lowDMat, reconMat = PCA.pca(dataMat, 1)
PCA.plotPCA(dataMat, reconMat)
"""
dataMat = PCA.replaceNanWithMean("E:/TestDatas/MachineLearningInAction/Ch13/secom.data")
meanVals = numpy.mean(dataMat, axis=0)
meanRemoved = dataMat - meanVals
covMat = numpy.cov(meanRemoved, rowvar=0)
eigVals, eigVects = numpy.linalg.eig(numpy.mat(covMat))
print eigVals
"""
# EXTRAS.plotTestSet("E:/TestDatas/MachineLearningInAction/Ch13/testSet.txt")
# EXTRAS.plotTestSet3("E:/TestDatas/MachineLearningInAction/Ch13/testSet3.txt")
# EXTRAS.plotSecomPCA("E:/TestDatas/MachineLearningInAction/Ch13/secom.data")
SGMean = PCA.MLmean(SGNorm)
SGCov = PCA.MLcov(SGNorm,SGMean)
eigw,eigv = np.linalg.eig(SGCov)
""" Python doesn't return an ordered list of eigenvalues/eigenvectors
so we join them and sort them in descending order.
Then we substract the 2 highest eigenvectors/principal components """
SGVectors = []
for i in range(len(eigw)):
SGVectors.append((eigw[i],eigv[:,i]))
SGVectors = sorted(SGVectors, reverse=True, key=lambda tup: tup[0])
SGPC = [SGVectors[0][1],SGVectors[1][1]]
#Projection via dot product
new_SGX,new_SGY = PCA.transform(SGNorm,SGPC)
# Plotting the eigenspectrum
plt.plot(range(1,len(eigw)+1),eigw,'r-')
plt.xlabel('Eigenvector number')
plt.ylabel('Eigenvalue')
plt.title('Eigenspectrum')
plt.show()
#Plotting the projection onto the first 2 Principal Components
plt.plot(new_SGX,new_SGY,"x")
plt.xlabel('First principal component')
plt.ylabel('Second principal component')
plt.title("The SGdata projected onto Principal Components")
plt.show()
# Load input data
Obs_ij = np.loadtxt( INFILE_DIR + INFILE )
Time_i = np.arange( len( Obs_ij ) ) / ( 1.0 * len( Obs_ij ) )
n_band = len( Obs_ij.T )
# Initialization of Kernel
print 'Decomposition into time slices...'
n_slice = len( Time_i )
Kernel_il = geometry.kernel( Time_i, n_slice, N_SIDE, GEOM )
print 'Kernel_il', Kernel_il
Kernel_il[ np.where( Kernel_il < 1e-3 ) ] = 0.
print 'Kernel_il', Kernel_il
# PCA
print 'Performing PCA...'
n_pc, V_nj, U_in, M_j = PCA.do_PCA( Obs_ij, E_cutoff=1e-2, output=True )
# V_nj[0] = -1. * V_nj[0]
# U_in.T[0] = -1. * U_in.T[0]
# V_nj[1] = -1. * V_nj[1]
# U_in.T[1] = -1. * U_in.T[1]
n_type = n_pc + 1
if n_type != 3 :
print 'ERROR: This code is only applicable for 3 surface types!'
sys.exit()
U_iq = np.c_[ U_in, np.ones( len( U_in ) ) ]
PC1_limit = [-0.4, 0.2] # manually set for now
PC2_limit = [-0.1, 0.4] # manually set for now
# Ignore the new feature as it messes up PCA
data_dict = pickle.load(open("data/own_data_dict.pkl", "r"))
features_list = getallFeatures(data_dict)
data = featureFormat(data_dict, features_list, sort_keys = True)
# Scale features:
mins = np.min(data, axis=0)
maxs = np.max(data, axis=0)
data = (data-mins)/(maxs-mins)
labels, features = targetFeatureSplit(data)
features_train, features_test, labels_train, labels_test = \
stratifiedShuffleSplit(features, labels)
### Do some PCA
pca = PCA.doPCA(features_train, n = 4)
transformed_train = pca.transform(features_train)
# Do some hyperparam validation:
best_svc, svc_grid_scores = ClassifySVM.gridsearch(
transformed_train, labels_train
)
svmfit = ClassifySVM.train(transformed_train, labels_train, best_svc)
test_classifier(svmfit, data)
dump_classifier_and_data(svmfit, data_dict, features_list)
