Ryota Bannai RyotaBannai

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Man's soil is still rich enough to direct his own life.

RyotaBannai / efaces_w_scilearn_pca.py

Last active December 19, 2018 18:01

	from sklearn.datasets import fetch_lfw_people

	faces = fetch_lfw_people(min_faces_per_person=60)
	face_data_raw = faces.data
	average_face = face_data_raw.mean(axis=0)
	face_data = face_data_raw - average_face

	pca = PCA(100).fit(face_data)
	PC = pca.transform(face_data)

RyotaBannai / reduce_same_size.py

Created December 19, 2018 18:05

	truncated = faces.data[:500] # 500 *2914 Matrix
	average_face = truncted.mean(axis=0)
	face_data = truncted - average_face

RyotaBannai / transform_matrix_to_100d.py

Created December 19, 2018 18:07

	U, s, Vt = LA.svd(face_data, full_matrices=False)
	S = np.diag(s)
	#U: 500 500, S: 500 500, Vt:500 *2914

	dim = 100
	US = U[:, 0:dim].dot(S[0:dim, 0:dim])

RyotaBannai / construct_faceimages.py

Created December 19, 2018 18:08

	X = US.dot(Vt[:dim,:])
	X = X + average_face

RyotaBannai / plot_faceimages_svd.py

Created December 19, 2018 18:10

	fig, ax = plt.subplots(2, 5, figsize=(5, 2.5),
	subplot_kw={'xticks':[], 'yticks':[]},
	gridspec_kw=dict(hspace=0.1, wspace=0.1))
	for i in range(5, 10):
	ax[0, i-5].imshow(faces.data[i].reshape(62,47), cmap='binary_r')
	ax[1, i-5].imshow(X[i].reshape(62,47), cmap='binary_r')

RyotaBannai / plot_eigenfaces.py

Created December 19, 2018 18:11

	N=5
	fig, ax = plt.subplots(1, N, figsize=(5, 2.5),
	subplot_kw={'xticks':[], 'yticks':[]},
	gridspec_kw=dict(hspace=0.1, wspace=0.1))
	for i in range(1, N+1):
	ax[i-1].imshow(Vt[i].reshape(62, 47), cmap='binary_r')

RyotaBannai / heroku_dump.txt

Last active December 19, 2018 18:49

	$heroku pg:backups:capture
	//Make the latest backup file on Poshgres on heroku
	$heroku pg:backups:download
	//Download the latest backup file to the localhost(the name is latest.dump)
	//Reference is below

RyotaBannai / insert_pgre_dumpfile.txt

Last active December 19, 2018 18:49

$pg_restore --verbose --clean --no-acl --no-owner -h localhost -U myuser -d mydb latest.dump

RyotaBannai / pgre_dump_commands.txt

Last active December 19, 2018 18:48

	db=# \t //1st command
	db=# \a //2nd command
	db=# \o file.json //3rd command
	db=# SELECT json_agg(json_build_object( //4thcommand
	'pk', t.id,'model','meryota.question', 'fields',
	json_build_object('question_text',t.question_text,
	'pub_date',t.pub_date))) from meryota_question as t;

RyotaBannai / django_sqlight_insert_format.json

Last active December 19, 2018 18:58