Commit 160d393f authored by slavenc's avatar slavenc
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added project 4 files

parent 731286fc
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# -*- coding: utf-8 -*-
Created on Sun Dec 22 09:06:21 2019
@author: made_
# PCA on EEG datasets
import numpy as np
import pandas as pd
from sklearn.preprocessing import StandardScaler
from sklearn.decomposition import PCA, KernelPCA
# import eeg features directly
eeg_train = pd.read_csv('files/eeg_feats_train.csv').values
eeg_test = pd.read_csv('files/eeg_feats_test.csv').values
y_train = pd.read_csv('files/train_labels.csv').drop('Id', axis=1).values
# scale
scaler = StandardScaler()
eeg_train_s = scaler.transform(eeg_train)
eeg_test_s = scaler.transform(eeg_test)
# perfrom pca
pca = PCA(n_components=45, random_state=0)
pca.fit_transform(eeg_train_s, y_train)
#print('Explained Variance: %0.5f' % np.sum(pca.explained_variance_ratio_[0:45])) # looks like 45 are enough
# transform scaled eeg datasets
eeg_train_mod = pca.transform(eeg_train_s)
eeg_test_mod = pca.transform(eeg_test_s)
# write
pd.DataFrame.to_csv(pd.DataFrame(eeg_train_mod), 'files/eeg_train_pca45.csv', index=False)
pd.DataFrame.to_csv(pd.DataFrame(eeg_test_mod), 'files/eeg_test_pca45.csv', index=False)
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