-
Notifications
You must be signed in to change notification settings - Fork 0
/
submit.m
578 lines (484 loc) · 16.7 KB
/
submit.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
function submit(partId, webSubmit)
%SUBMIT Submit your code and output to the ml-class servers
% SUBMIT() will connect to the ml-class server and submit your solution
fprintf('==\n== [ml-class] Submitting Solutions | Programming Exercise %s\n==\n', ...
homework_id());
if ~exist('partId', 'var') || isempty(partId)
partId = promptPart();
end
if ~exist('webSubmit', 'var') || isempty(webSubmit)
webSubmit = 0; % submit directly by default
end
% Check valid partId
partNames = validParts();
if ~isValidPartId(partId)
fprintf('!! Invalid homework part selected.\n');
fprintf('!! Expected an integer from 1 to %d.\n', numel(partNames) + 1);
fprintf('!! Submission Cancelled\n');
return
end
if ~exist('ml_login_data.mat','file')
[login password] = loginPrompt();
save('ml_login_data.mat','login','password');
else
load('ml_login_data.mat');
[login password] = quickLogin(login, password);
save('ml_login_data.mat','login','password');
end
if isempty(login)
fprintf('!! Submission Cancelled\n');
return
end
fprintf('\n== Connecting to ml-class ... ');
if exist('OCTAVE_VERSION')
fflush(stdout);
end
% Setup submit list
if partId == numel(partNames) + 1
submitParts = 1:numel(partNames);
else
submitParts = [partId];
end
for s = 1:numel(submitParts)
thisPartId = submitParts(s);
if (~webSubmit) % submit directly to server
[login, ch, signature, auxstring] = getChallenge(login, thisPartId);
if isempty(login) || isempty(ch) || isempty(signature)
% Some error occured, error string in first return element.
fprintf('\n!! Error: %s\n\n', login);
return
end
% Attempt Submission with Challenge
ch_resp = challengeResponse(login, password, ch);
[result, str] = submitSolution(login, ch_resp, thisPartId, ...
output(thisPartId, auxstring), source(thisPartId), signature);
partName = partNames{thisPartId};
fprintf('\n== [ml-class] Submitted Assignment %s - Part %d - %s\n', ...
homework_id(), thisPartId, partName);
fprintf('== %s\n', strtrim(str));
if exist('OCTAVE_VERSION')
fflush(stdout);
end
else
[result] = submitSolutionWeb(login, thisPartId, output(thisPartId), ...
source(thisPartId));
result = base64encode(result);
fprintf('\nSave as submission file [submit_ex%s_part%d.txt (enter to accept default)]:', ...
homework_id(), thisPartId);
saveAsFile = input('', 's');
if (isempty(saveAsFile))
saveAsFile = sprintf('submit_ex%s_part%d.txt', homework_id(), thisPartId);
end
fid = fopen(saveAsFile, 'w');
if (fid)
fwrite(fid, result);
fclose(fid);
fprintf('\nSaved your solutions to %s.\n\n', saveAsFile);
fprintf(['You can now submit your solutions through the web \n' ...
'form in the programming exercises. Select the corresponding \n' ...
'programming exercise to access the form.\n']);
else
fprintf('Unable to save to %s\n\n', saveAsFile);
fprintf(['You can create a submission file by saving the \n' ...
'following text in a file: (press enter to continue)\n\n']);
pause;
fprintf(result);
end
end
end
end
% ================== CONFIGURABLES FOR EACH HOMEWORK ==================
function id = homework_id()
id = '4';
end
function [partNames] = validParts()
partNames = { 'Feedforward and Cost Function', ...
'Regularized Cost Function', ...
'Sigmoid Gradient', ...
'Neural Network Gradient (Backpropagation)' ...
'Regularized Gradient' ...
};
end
function srcs = sources()
% Separated by part
srcs = { { 'nnCostFunction.m' }, ...
{ 'nnCostFunction.m' }, ...
{ 'sigmoidGradient.m' }, ...
{ 'nnCostFunction.m' }, ...
{ 'nnCostFunction.m' } };
end
function out = output(partId, auxstring)
% Random Test Cases
X = reshape(3 * sin(1:1:30), 3, 10);
Xm = reshape(sin(1:32), 16, 2) / 5;
ym = 1 + mod(1:16,4)';
t1 = sin(reshape(1:2:24, 4, 3));
t2 = cos(reshape(1:2:40, 4, 5));
t = [t1(:) ; t2(:)];
if partId == 1
[J] = nnCostFunction(t, 2, 4, 4, Xm, ym, 0);
out = sprintf('%0.5f ', J);
elseif partId == 2
[J] = nnCostFunction(t, 2, 4, 4, Xm, ym, 1.5);
out = sprintf('%0.5f ', J);
elseif partId == 3
out = sprintf('%0.5f ', sigmoidGradient(X));
elseif partId == 4
[J, grad] = nnCostFunction(t, 2, 4, 4, Xm, ym, 0);
out = sprintf('%0.5f ', J);
out = [out sprintf('%0.5f ', grad)];
elseif partId == 5
[J, grad] = nnCostFunction(t, 2, 4, 4, Xm, ym, 1.5);
out = sprintf('%0.5f ', J);
out = [out sprintf('%0.5f ', grad)];
end
end
% ====================== SERVER CONFIGURATION ===========================
% ***************** REMOVE -staging WHEN YOU DEPLOY *********************
function url = site_url()
url = 'http://class.coursera.org/ml-005';
end
function url = challenge_url()
url = [site_url() '/assignment/challenge'];
end
function url = submit_url()
url = [site_url() '/assignment/submit'];
end
% ========================= CHALLENGE HELPERS =========================
function src = source(partId)
src = '';
src_files = sources();
if partId <= numel(src_files)
flist = src_files{partId};
for i = 1:numel(flist)
fid = fopen(flist{i});
if (fid == -1)
error('Error opening %s (is it missing?)', flist{i});
end
line = fgets(fid);
while ischar(line)
src = [src line];
line = fgets(fid);
end
fclose(fid);
src = [src '||||||||'];
end
end
end
function ret = isValidPartId(partId)
partNames = validParts();
ret = (~isempty(partId)) && (partId >= 1) && (partId <= numel(partNames) + 1);
end
function partId = promptPart()
fprintf('== Select which part(s) to submit:\n');
partNames = validParts();
srcFiles = sources();
for i = 1:numel(partNames)
fprintf('== %d) %s [', i, partNames{i});
fprintf(' %s ', srcFiles{i}{:});
fprintf(']\n');
end
fprintf('== %d) All of the above \n==\nEnter your choice [1-%d]: ', ...
numel(partNames) + 1, numel(partNames) + 1);
selPart = input('', 's');
partId = str2num(selPart);
if ~isValidPartId(partId)
partId = -1;
end
end
function [email,ch,signature,auxstring] = getChallenge(email, part)
str = urlread(challenge_url(), 'post', {'email_address', email, 'assignment_part_sid', [homework_id() '-' num2str(part)], 'response_encoding', 'delim'});
str = strtrim(str);
r = struct;
while(numel(str) > 0)
[f, str] = strtok (str, '|');
[v, str] = strtok (str, '|');
r = setfield(r, f, v);
end
email = getfield(r, 'email_address');
ch = getfield(r, 'challenge_key');
signature = getfield(r, 'state');
auxstring = getfield(r, 'challenge_aux_data');
end
function [result, str] = submitSolutionWeb(email, part, output, source)
result = ['{"assignment_part_sid":"' base64encode([homework_id() '-' num2str(part)], '') '",' ...
'"email_address":"' base64encode(email, '') '",' ...
'"submission":"' base64encode(output, '') '",' ...
'"submission_aux":"' base64encode(source, '') '"' ...
'}'];
str = 'Web-submission';
end
function [result, str] = submitSolution(email, ch_resp, part, output, ...
source, signature)
params = {'assignment_part_sid', [homework_id() '-' num2str(part)], ...
'email_address', email, ...
'submission', base64encode(output, ''), ...
'submission_aux', base64encode(source, ''), ...
'challenge_response', ch_resp, ...
'state', signature};
str = urlread(submit_url(), 'post', params);
% Parse str to read for success / failure
result = 0;
end
% =========================== LOGIN HELPERS ===========================
function [login password] = loginPrompt()
% Prompt for password
[login password] = basicPrompt();
if isempty(login) || isempty(password)
login = []; password = [];
end
end
function [login password] = basicPrompt()
login = input('Login (Email address): ', 's');
password = input('Password: ', 's');
end
function [login password] = quickLogin(login,password)
disp(['You are currently logged in as ' login '.']);
cont_token = input('Is this you? (y/n - type n to reenter password)','s');
if(isempty(cont_token) || cont_token(1)=='Y'||cont_token(1)=='y')
return;
else
[login password] = loginPrompt();
end
end
function [str] = challengeResponse(email, passwd, challenge)
str = sha1([challenge passwd]);
end
% =============================== SHA-1 ================================
function hash = sha1(str)
% Initialize variables
h0 = uint32(1732584193);
h1 = uint32(4023233417);
h2 = uint32(2562383102);
h3 = uint32(271733878);
h4 = uint32(3285377520);
% Convert to word array
strlen = numel(str);
% Break string into chars and append the bit 1 to the message
mC = [double(str) 128];
mC = [mC zeros(1, 4-mod(numel(mC), 4), 'uint8')];
numB = strlen * 8;
if exist('idivide')
numC = idivide(uint32(numB + 65), 512, 'ceil');
else
numC = ceil(double(numB + 65)/512);
end
numW = numC * 16;
mW = zeros(numW, 1, 'uint32');
idx = 1;
for i = 1:4:strlen + 1
mW(idx) = bitor(bitor(bitor( ...
bitshift(uint32(mC(i)), 24), ...
bitshift(uint32(mC(i+1)), 16)), ...
bitshift(uint32(mC(i+2)), 8)), ...
uint32(mC(i+3)));
idx = idx + 1;
end
% Append length of message
mW(numW - 1) = uint32(bitshift(uint64(numB), -32));
mW(numW) = uint32(bitshift(bitshift(uint64(numB), 32), -32));
% Process the message in successive 512-bit chs
for cId = 1 : double(numC)
cSt = (cId - 1) * 16 + 1;
cEnd = cId * 16;
ch = mW(cSt : cEnd);
% Extend the sixteen 32-bit words into eighty 32-bit words
for j = 17 : 80
ch(j) = ch(j - 3);
ch(j) = bitxor(ch(j), ch(j - 8));
ch(j) = bitxor(ch(j), ch(j - 14));
ch(j) = bitxor(ch(j), ch(j - 16));
ch(j) = bitrotate(ch(j), 1);
end
% Initialize hash value for this ch
a = h0;
b = h1;
c = h2;
d = h3;
e = h4;
% Main loop
for i = 1 : 80
if(i >= 1 && i <= 20)
f = bitor(bitand(b, c), bitand(bitcmp(b), d));
k = uint32(1518500249);
elseif(i >= 21 && i <= 40)
f = bitxor(bitxor(b, c), d);
k = uint32(1859775393);
elseif(i >= 41 && i <= 60)
f = bitor(bitor(bitand(b, c), bitand(b, d)), bitand(c, d));
k = uint32(2400959708);
elseif(i >= 61 && i <= 80)
f = bitxor(bitxor(b, c), d);
k = uint32(3395469782);
end
t = bitrotate(a, 5);
t = bitadd(t, f);
t = bitadd(t, e);
t = bitadd(t, k);
t = bitadd(t, ch(i));
e = d;
d = c;
c = bitrotate(b, 30);
b = a;
a = t;
end
h0 = bitadd(h0, a);
h1 = bitadd(h1, b);
h2 = bitadd(h2, c);
h3 = bitadd(h3, d);
h4 = bitadd(h4, e);
end
hash = reshape(dec2hex(double([h0 h1 h2 h3 h4]), 8)', [1 40]);
hash = lower(hash);
end
function ret = bitadd(iA, iB)
ret = double(iA) + double(iB);
ret = bitset(ret, 33, 0);
ret = uint32(ret);
end
function ret = bitrotate(iA, places)
t = bitshift(iA, places - 32);
ret = bitshift(iA, places);
ret = bitor(ret, t);
end
% =========================== Base64 Encoder ============================
% Thanks to Peter John Acklam
%
function y = base64encode(x, eol)
%BASE64ENCODE Perform base64 encoding on a string.
%
% BASE64ENCODE(STR, EOL) encode the given string STR. EOL is the line ending
% sequence to use; it is optional and defaults to '\n' (ASCII decimal 10).
% The returned encoded string is broken into lines of no more than 76
% characters each, and each line will end with EOL unless it is empty. Let
% EOL be empty if you do not want the encoded string broken into lines.
%
% STR and EOL don't have to be strings (i.e., char arrays). The only
% requirement is that they are vectors containing values in the range 0-255.
%
% This function may be used to encode strings into the Base64 encoding
% specified in RFC 2045 - MIME (Multipurpose Internet Mail Extensions). The
% Base64 encoding is designed to represent arbitrary sequences of octets in a
% form that need not be humanly readable. A 65-character subset
% ([A-Za-z0-9+/=]) of US-ASCII is used, enabling 6 bits to be represented per
% printable character.
%
% Examples
% --------
%
% If you want to encode a large file, you should encode it in chunks that are
% a multiple of 57 bytes. This ensures that the base64 lines line up and
% that you do not end up with padding in the middle. 57 bytes of data fills
% one complete base64 line (76 == 57*4/3):
%
% If ifid and ofid are two file identifiers opened for reading and writing,
% respectively, then you can base64 encode the data with
%
% while ~feof(ifid)
% fwrite(ofid, base64encode(fread(ifid, 60*57)));
% end
%
% or, if you have enough memory,
%
% fwrite(ofid, base64encode(fread(ifid)));
%
% See also BASE64DECODE.
% Author: Peter John Acklam
% Time-stamp: 2004-02-03 21:36:56 +0100
% E-mail: [email protected]
% URL: http://home.online.no/~pjacklam
if isnumeric(x)
x = num2str(x);
end
% make sure we have the EOL value
if nargin < 2
eol = sprintf('\n');
else
if sum(size(eol) > 1) > 1
error('EOL must be a vector.');
end
if any(eol(:) > 255)
error('EOL can not contain values larger than 255.');
end
end
if sum(size(x) > 1) > 1
error('STR must be a vector.');
end
x = uint8(x);
eol = uint8(eol);
ndbytes = length(x); % number of decoded bytes
nchunks = ceil(ndbytes / 3); % number of chunks/groups
nebytes = 4 * nchunks; % number of encoded bytes
% add padding if necessary, to make the length of x a multiple of 3
if rem(ndbytes, 3)
x(end+1 : 3*nchunks) = 0;
end
x = reshape(x, [3, nchunks]); % reshape the data
y = repmat(uint8(0), 4, nchunks); % for the encoded data
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Split up every 3 bytes into 4 pieces
%
% aaaaaabb bbbbcccc ccdddddd
%
% to form
%
% 00aaaaaa 00bbbbbb 00cccccc 00dddddd
%
y(1,:) = bitshift(x(1,:), -2); % 6 highest bits of x(1,:)
y(2,:) = bitshift(bitand(x(1,:), 3), 4); % 2 lowest bits of x(1,:)
y(2,:) = bitor(y(2,:), bitshift(x(2,:), -4)); % 4 highest bits of x(2,:)
y(3,:) = bitshift(bitand(x(2,:), 15), 2); % 4 lowest bits of x(2,:)
y(3,:) = bitor(y(3,:), bitshift(x(3,:), -6)); % 2 highest bits of x(3,:)
y(4,:) = bitand(x(3,:), 63); % 6 lowest bits of x(3,:)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Now perform the following mapping
%
% 0 - 25 -> A-Z
% 26 - 51 -> a-z
% 52 - 61 -> 0-9
% 62 -> +
% 63 -> /
%
% We could use a mapping vector like
%
% ['A':'Z', 'a':'z', '0':'9', '+/']
%
% but that would require an index vector of class double.
%
z = repmat(uint8(0), size(y));
i = y <= 25; z(i) = 'A' + double(y(i));
i = 26 <= y & y <= 51; z(i) = 'a' - 26 + double(y(i));
i = 52 <= y & y <= 61; z(i) = '0' - 52 + double(y(i));
i = y == 62; z(i) = '+';
i = y == 63; z(i) = '/';
y = z;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Add padding if necessary.
%
npbytes = 3 * nchunks - ndbytes; % number of padding bytes
if npbytes
y(end-npbytes+1 : end) = '='; % '=' is used for padding
end
if isempty(eol)
% reshape to a row vector
y = reshape(y, [1, nebytes]);
else
nlines = ceil(nebytes / 76); % number of lines
neolbytes = length(eol); % number of bytes in eol string
% pad data so it becomes a multiple of 76 elements
y = [y(:) ; zeros(76 * nlines - numel(y), 1)];
y(nebytes + 1 : 76 * nlines) = 0;
y = reshape(y, 76, nlines);
% insert eol strings
eol = eol(:);
y(end + 1 : end + neolbytes, :) = eol(:, ones(1, nlines));
% remove padding, but keep the last eol string
m = nebytes + neolbytes * (nlines - 1);
n = (76+neolbytes)*nlines - neolbytes;
y(m+1 : n) = '';
% extract and reshape to row vector
y = reshape(y, 1, m+neolbytes);
end
% output is a character array
y = char(y);
end