In [9]:
from theano.tensor.shared_randomstreams import RandomStreams
from theano.printing import pp
from theano import function
In [2]:
srng = RandomStreams(seed=234)
rv_u = srng.uniform((2,2))
rv_n = srng.normal((2,2))
In [7]:
print pp(rv_n)
print pp(rv_n)
RandomFunction{normal}(<RandomStateType>, int32([TensorConstant{2}, TensorConstant{2}]), TensorConstant{0.0}, TensorConstant{1.0})
RandomFunction{normal}(<RandomStateType>, int32([TensorConstant{2}, TensorConstant{2}]), TensorConstant{0.0}, TensorConstant{1.0})
In [10]:
f = function([], rv_u)
g = function([], rv_n, no_default_updates=True) #Not updating rv_n.rng
In [20]:
print "f() is {}".format(f())
print
print "g() is {}".format(g())
f() is [[ 0.28179047 0.23616647]
[ 0.5958365 0.1385743 ]]
g() is [[ 0.37328447 -0.65746672]
[-0.36302373 -0.97484625]]
In [21]:
nearly_zeros = function([], rv_u + rv_u - 2 * rv_u)
In [24]:
nearly_zeros()
Out[24]:
array([[ 0., 0.],
[ 0., 0.]])
In [25]:
rng_val = rv_u.rng.get_value(borrow=True) # Get the rng for rv_u rng_val.seed(89234) # seeds the generator rv_u.rng.set_value(rng_val, borrow=True) # Assign back seeded rng
In [29]:
rng_val
Out[29]:
<mtrand.RandomState at 0x107215710>
In [31]:
state_after_v0 = rv_u.rng.get_value().get_state()
# this affects rv_u's generator v1 = f() rng = rng.get_value(borrow=True) rng.set_state(state_after_v0) rv_u.rng.set_value(rng, borrow=True) v2 = f() # v2 != v1
In [32]:
state_after_v0
Out[32]:
('MT19937', array([1412837902, 4087756582, 516309042, 1364072208, 1090621429,
4112181791, 3626575279, 1669722016, 3008290917, 852339364,
138280172, 165820123, 2327577011, 3079128434, 3457976983,
359398700, 1807233986, 1274846374, 4117684190, 73832659,
1478997809, 1174043298, 1741287282, 2408080718, 2281248458,
932100177, 3771617988, 1600467228, 924198853, 4068010514,
2587713894, 3433167301, 1613211556, 2120429277, 397803828,
1420342703, 498076466, 915436930, 3968997384, 1080010303,
3772081571, 3010457279, 2416405684, 3446465340, 3562542605,
1819353986, 3800663786, 915703320, 2059339361, 4125682097,
3511670932, 516487005, 839137542, 3788010305, 3224581901,
941172982, 2777973816, 2028991983, 1416998551, 3402826840,
1706339450, 64970340, 1156665240, 1332620248, 1066760937,
2073534949, 1046328115, 3780476516, 1939087946, 4162625085,
269457214, 2946549107, 2415322410, 122216919, 4284949092,
3931977509, 1232741786, 3962103520, 2467239141, 1457000662,
2596712546, 2319750987, 3564233040, 4187982969, 716710529,
1635315776, 932314278, 798657003, 3728875315, 1979249970,
2854781471, 4144158891, 1874767531, 3179091202, 1453140231,
4104657811, 1141787777, 576525996, 111151510, 363590525,
548832472, 769198274, 3179968677, 3818150943, 1985647709,
2312394400, 3238056780, 3535874624, 26674961, 1982425085,
179526683, 524607122, 733786888, 1479839416, 3112831309,
2663089241, 3164611155, 3794299985, 3309069440, 2448700555,
1413605274, 2944283910, 2934808181, 560951660, 3430501763,
134472123, 1744554810, 3901983634, 4260991572, 2026804764,
599412781, 1677821654, 2970357069, 274568852, 4029216823,
2163308429, 923404741, 3060758440, 3188078736, 589482521,
714322363, 591446418, 2224572094, 3261582840, 3734124780,
2518244455, 3164126701, 2645926636, 2369908400, 1822787024,
4061149396, 939368302, 3110123697, 3062841555, 2504793946,
153656410, 897374583, 3963596744, 100650606, 726856439,
3043251727, 3696952182, 3033025986, 600137326, 596338481,
2349588735, 208351545, 2370206405, 3881572849, 1487701115,
2061074391, 1934520009, 2639386111, 38641262, 1124173263,
609603763, 2918324016, 2392772417, 2434206835, 683879474,
325978279, 1769495085, 1161205011, 3719825126, 2198578744,
826291772, 1550646588, 1969142839, 13804749, 436642740,
2199983786, 1581160537, 3930022013, 3542172581, 4248999801,
3574780596, 2774672601, 1416736027, 1690641351, 1268367246,
3186632028, 3014657937, 3812829988, 63083448, 2329771683,
3174781836, 3855289781, 927023402, 20655977, 2880261689,
2023853847, 891739105, 2131595572, 2699019987, 2642204749,
1518960179, 1162519712, 2934363193, 3065378916, 1154231621,
4036082481, 1148973407, 1009256058, 102565122, 503854828,
3516132618, 3303814558, 639761349, 4015469082, 1498019510,
3653042504, 3826419779, 66870972, 3768255694, 1581987533,
313766547, 2716611032, 2804185931, 3207109835, 2368363152,
1703564111, 1847407645, 2515691761, 3868455915, 566761734,
1945727564, 469045596, 1486650326, 3319971042, 2978889768,
2670986471, 2781736929, 1642673298, 2461141453, 1752150435,
3613305138, 499854688, 3061951908, 3687032443, 828529273,
2702211660, 3934432907, 2374651832, 2424894963, 1261067248,
165808961, 4117415507, 3777841030, 1514267354, 3613582842,
2127542702, 2584873609, 4049762241, 86428185, 3504973197,
1317318877, 3765014744, 4070756204, 1727630374, 2348271132,
1945707995, 46761409, 1577128108, 179052069, 3403150376,
1154881936, 1902199253, 1811744656, 2711675737, 359315896,
4068057142, 1053026574, 2366071146, 322081552, 3780530289,
350339122, 3608987810, 2833067747, 2051365992, 1840052468,
2474286067, 264515920, 1502144692, 7148633, 1430039480,
2193707321, 3977833580, 2255323409, 409610861, 909136298,
1903485074, 2560486284, 4086313705, 4136292667, 908962737,
2774687414, 1183334136, 439973059, 1167020730, 135222752,
2629376488, 3392769661, 4189814270, 593852863, 488825447,
2359575845, 830919823, 2892840407, 1592227086, 1864094786,
4237919087, 2135327627, 527173739, 1355678894, 4210298667,
3648583138, 1643580234, 358387655, 2337225784, 2383604050,
3351415364, 1800909141, 4137137445, 1777508899, 3762801979,
3496873471, 1184270647, 2449156175, 2429291349, 84994442,
4161337351, 46898071, 253630401, 518838530, 3707135726,
1480913371, 3905161601, 3300042022, 3377411934, 3601039599,
417189573, 3493185949, 2486378743, 987284509, 710674841,
1070944000, 1587998505, 2227576894, 3327962578, 3191694538,
2276079469, 2449156594, 561980200, 3411787805, 2611759090,
2733088034, 2065892825, 2430399281, 2060756234, 3009361539,
638463092, 737105740, 3428057890, 2996803837, 2595504223,
4018007824, 2539379822, 3391891402, 2727184575, 1848512064,
2026855084, 1331583874, 3163448297, 3188900547, 653230404,
3856012077, 4260245814, 736993553, 2328083036, 3288883360,
4215337583, 547225099, 923643235, 2149573866, 2177133374,
3911932146, 1447737292, 3101525708, 3138482631, 3593894820,
3340151406, 2617080910, 2647642559, 1673873703, 1128921886,
3448067160, 688070401, 874427289, 2361677012, 1547920252,
1249326610, 547487572, 4057271732, 1213717997, 2874898914,
16662783, 126079883, 4087801654, 1636454211, 981046718,
277594235, 2731219300, 3757506341, 2079189074, 1009720718,
2006644122, 3708151614, 4254927768, 32367359, 2308883490,
858672165, 1710979013, 3877381084, 467561107, 1501722750,
2729007283, 3338344744, 828563679, 351260380, 1227859793,
91118473, 2045383096, 3976646835, 386929260, 763659410,
4152819501, 3058735963, 3514238679, 1647845692, 3345147262,
3613960644, 3812942489, 2218593522, 437896599, 161601068,
4102760237, 911463144, 655123239, 4138026288, 315757625,
2877154215, 108069870, 170419904, 2343464280, 1647161553,
1508545118, 2905898392, 2943976376, 4166030425, 93316479,
2161468649, 475425833, 2892642633, 2393638036, 2544999224,
390414386, 956198573, 2778871508, 437191685, 2370171986,
292232043, 2384430697, 1665788653, 53876070, 219470071,
720673497, 3246939168, 1271481429, 2946254394, 1936856149,
533303133, 3518635330, 2652645443, 1582583892, 1289536264,
1326188002, 2500772376, 1954127689, 3966137059, 1886510204,
895745511, 1709586379, 3290905315, 4150257029, 1891528335,
4245382273, 3190110301, 2658508924, 1446440771, 1865300999,
3393630316, 197613071, 2233550695, 1100280151, 3181015976,
2103750390, 2234554601, 4290323204, 2083870105, 4029629027,
4112954128, 1577926272, 1211334753, 1018603816, 2464292852,
882840584, 1674884761, 1007819093, 1075894648, 1391370625,
1110992549, 18877701, 2666168432, 3458535879, 875810272,
3988810231, 3740751919, 1762844494, 656066760, 3903295259,
2227612428, 1130875250, 1196377602, 3564596308, 247710625,
1706233805, 675533329, 3116622366, 4138391800, 3595300543,
2093457292, 406063726, 451731325, 3303496345, 2982152654,
2950895025, 3706919204, 4291792878, 1099123380, 1247972206,
2157177882, 4089670375, 223362415, 2882411391, 615705890,
2640427279, 3262073682, 416108777, 3203460670, 1933873108,
458545692, 3856674583, 392715637, 3977197131, 1499680815,
1186094788, 4119391230, 4264946994, 1095700140, 1709141516,
2995125657, 4293826842, 1251606668, 3944369121, 1269506870,
1192678818, 2830564642, 3699006581, 1959410213, 290175100,
3059960693, 224500426, 3269831356, 2183887773, 1690545694,
1015643982, 249955423, 2024239502, 3071621441, 914696671,
2027725858, 1132035017, 2231938653, 889246455, 871073059,
2875629117, 3649030881, 2027634247, 3459022769, 1661505375,
3698008114, 2495837797, 118389792, 3623168049], dtype=uint32), 64, 0, 0.0)
Content source: dikien/personnel-study
Similar notebooks: