Bdtjtk

I am building a linear regression model that maps a numpy array of ones into a numpy array of fives,

i.e. [1.0,1.0,1.0,1.0] ---> [5.0,5.0,5.0,5.0]

My network is shown below where you can see that the x placeholders correspond to the inputs and the y placeholders correspond to the outputs. However my model is just converging to 1.0s instead:

import numpy as np

import tensorflow as tf

from tensorflow.keras.layers import Dense



g= tf.Graph()

with g.as_default():



    x = tf.placeholder(dtype=tf.float32, shape = (None,4))

    y = tf.placeholder(dtype=tf.float32, shape = (None,4))



    model = tf.keras.Sequential([

    Dense(units=4, activation=tf.nn.relu),

    Dense(units=4, activation=tf.nn.sigmoid)

    ])





    pred = model(x)    

    loss = tf.reduce_mean(tf.square(pred - y))



    train_op = tf.train.AdamOptimizer().minimize(loss)



    init_op = tf.group(tf.global_variables_initializer(),

                         tf.local_variables_initializer())







with tf.Session(graph=g) as sess:

        sess.run(init_op)

        for step in range(1000):

            _ , lossy, predicted = sess.run([train_op,loss,pred], feed_dict = {x:np.ones(shape=(1,4)),

                                           y:5*np.ones(shape=(1,4))})        



            print(predicted)

The results unfortunately converge to a numpy array of ones instead of fives:

[[0.51713973 0.59164494 0.5563706  0.61163014]]

[[0.5176364  0.5928199  0.5572325  0.61297345]]

[[0.51813626 0.59399694 0.5580971  0.614318  ]]

[[0.518639  0.595176  0.5589645 0.615664 ]]

[[0.5191449  0.5963571  0.5598347  0.61701125]]

[[0.51965386 0.59754026 0.56070775 0.61835986]]

[[0.6156333  0.7611001  0.69670683 0.79359496]]

[[0.61654085 0.76225615 0.6978007  0.7947457 ]]

[[0.6174505  0.76340926 0.6988941  0.7958921 ]]

[[0.61836195 0.7645594  0.69998693 0.7970343 ]]

[[0.61927533 0.7657065  0.70107937 0.79817224]]

[[0.6201906  0.7668506  0.70217115 0.7993058 ]]

[[0.6211078 0.7679917 0.7032624 0.8004351]]

[[0.62202674 0.7691298  0.7043529  0.80156004]]

[[0.6229476  0.77026474 0.70544285 0.80268055]]

[[0.62387013 0.77139646 0.706532   0.8037967 ]]

[[0.6247945  0.7725251  0.70762056 0.80490845]]

[[0.6257205  0.77365047 0.70870817 0.80601573]]

[[0.62664825 0.7747727  0.70979506 0.8071186 ]]

[[0.6275776  0.77589166 0.7108811  0.8082169 ]]

[[0.6285086  0.77700734 0.7119662  0.80931073]]

[[0.6294413 0.7781197 0.7130505 0.8104002]]

[[0.63037556 0.7792287  0.7141337  0.81148493]]

[[0.63131136 0.7803343  0.715216   0.81256527]]

[[0.6322487 0.7814366 0.7162972 0.813641 ]]

[[0.63318753 0.78253555 0.7173774  0.81471217]]

[[0.6341278  0.78363097 0.71845657 0.8157787 ]]

[[0.63506955 0.7847229  0.7195346  0.81684065]]

[[0.6360127  0.78581136 0.72061133 0.817898  ]]

[[0.6369573  0.78689635 0.72168696 0.8189507 ]]

[[0.63790315 0.78797776 0.7227614  0.8199988 ]]

[[0.6388504 0.7890556 0.7238345 0.8210421]]

[[0.6397989  0.79012996 0.7249064  0.8220809 ]]

[[0.64074874 0.79120064 0.72597694 0.82311493]]

[[0.64169973 0.7922677  0.72704613 0.8241443 ]]

[[0.64265203 0.793331   0.7281139  0.825169  ]]

[[0.6436055 0.7943908 0.7291803 0.826189 ]]

[[0.64456004 0.7954469  0.7302452  0.82720417]]

[[0.6455158  0.7964993  0.7313086  0.82821476]]

[[0.6464725  0.7975479  0.7323705  0.82922053]]

[[0.6474304  0.79859275 0.7334308  0.8302216 ]]

[[0.6483893  0.79963386 0.7344896  0.83121794]]

[[0.6493493  0.8006713  0.7355467  0.83220947]]

[[0.65031016 0.80170476 0.7366023  0.8331962 ]]

[[0.65127194 0.80273455 0.7376562  0.8341783 ]]

[[0.65223473 0.8037604  0.7387082  0.83515555]]

[[0.6531983  0.80478245 0.7397586  0.836128  ]]

[[0.6541628  0.8058007  0.74080724 0.8370958 ]]

[[0.6551281  0.8068149  0.74185413 0.8380587 ]]

[[0.65609425 0.8078254  0.7428992  0.83901685]]

[[0.65706116 0.80883193 0.7439424  0.8399703 ]]

[[0.6580287  0.8098345  0.7449836  0.84091884]]

[[0.65899706 0.81083316 0.746023   0.8418626 ]]

[[0.65996605 0.8118279  0.74706054 0.84280175]]

[[0.6609357  0.8128186  0.748096   0.84373593]]

[[0.66190594 0.81380534 0.7491295  0.8446654 ]]

[[0.66287684 0.8147882  0.750161   0.84559   ]]

[[0.6638481  0.815767   0.7511904  0.84650993]]

[[0.6648201  0.8167418  0.75221777 0.84742504]]

[[0.6657925 0.8177126 0.753243  0.8483353]]

[[0.66676533 0.8186794  0.7542662  0.8492409 ]]

[[0.6677386  0.81964207 0.75528723 0.8501416 ]]

[[0.6687124  0.8206008  0.75630605 0.8510376 ]]

[[0.66968644 0.8215554  0.75732267 0.8519288 ]]

[[0.6706608  0.82250595 0.7583371  0.8528153 ]]

[[0.6716356  0.8234524  0.75934917 0.85369694]]

[[0.6726106  0.8243949  0.76035905 0.85457385]]

[[0.6735859  0.82533324 0.7613666  0.85544604]]

[[0.6745613 0.8262675 0.7623719 0.8563134]]

[[0.7172588 0.8633007 0.8040014 0.8899244]]

[[0.71821445 0.86405045 0.8048828  0.8905892 ]]

[[0.7191691  0.8647962  0.80576116 0.8912497 ]]

[[0.7201225  0.86553806 0.80663645 0.89190614]]

[[0.7210749  0.8662759  0.80750865 0.89255834]]

[[0.72202617 0.8670098  0.8083777  0.89320654]]

[[0.72297627 0.8677398  0.8092437  0.89385056]]

[[0.7239251  0.8684658  0.81010664 0.8944905 ]]

[[0.7248728  0.86918783 0.8109664  0.8951264 ]]

[[0.72581923 0.8699059  0.811823   0.8957583 ]]

[[0.7267645  0.8706201  0.81267655 0.8963861 ]]

[[0.72770846 0.8713304  0.8135269  0.8970099 ]]

[[0.7286511 0.8720368 0.8143741 0.8976297]]

[[0.7295924  0.8727393  0.81521827 0.89824563]]

[[0.73053235 0.87343794 0.8160591  0.8988575 ]]

[[0.73147094 0.87413275 0.816897   0.89946544]]

[[0.7324081 0.8748237 0.8177316 0.9000695]]

[[0.7333439  0.87551075 0.818563   0.90066963]]

[[0.73427826 0.876194   0.81939125 0.9012659 ]]

[[0.7352112  0.87687343 0.82021636 0.9018583 ]]

[[0.7361426  0.87754905 0.82103825 0.90244687]]

[[0.73707247 0.8782209  0.8218571  0.9030316 ]]

[[0.73800087 0.878889   0.8226726  0.9036125 ]]

[[0.7389278  0.87955326 0.82348496 0.9041897 ]]

[[0.7398531  0.8802138  0.82429415 0.9047631 ]]

[[0.74077684 0.88087064 0.8251     0.9053327 ]]

[[0.7416989  0.8815237  0.8259028  0.90589863]]

[[0.7426194 0.882173  0.8267024 0.9064608]]

[[0.7435383  0.8828187  0.82749873 0.9070193 ]]

[[0.7444555  0.8834607  0.8282919  0.90757424]]

[[0.745371   0.884099   0.82908183 0.90812546]]

[[0.74628484 0.8847336  0.8298686  0.90867305]]

[[0.7471969 0.8853646 0.8306521 0.909217 ]]

[[0.7481073  0.88599193 0.83143246 0.9097574 ]]

[[0.749016  0.8866157 0.8322095 0.9102941]]

[[0.7499228  0.8872358  0.83298343 0.91082746]]

[[0.7508279  0.8878523  0.8337541  0.91135716]]

[[0.7517311  0.88846534 0.8345216  0.9118833 ]]

[[0.7526325  0.8890747  0.83528584 0.912406  ]]

[[0.7535321  0.8896805  0.83604693 0.91292536]]

[[0.7544298  0.8902828  0.83680475 0.91344106]]

[[0.7553256  0.8908816  0.83755946 0.9139535 ]]

[[0.7562196  0.8914768  0.8383109  0.91446245]]

[[0.75711167 0.8920687  0.8390592  0.9149679 ]]

[[0.7580018  0.8926569  0.8398042  0.91547006]]

[[0.75889   0.8932418 0.840546  0.915969 ]]

[[0.7597762  0.89382327 0.84128463 0.91646445]]

[[0.7606604  0.89440125 0.84202003 0.9169566 ]]

[[0.7615427  0.8949758  0.8427523  0.91744554]]

[[0.76242286 0.89554685 0.84348136 0.91793114]]

[[0.76330113 0.89611465 0.8442072  0.9184134 ]]

[[0.7641773  0.89667904 0.84492993 0.9188925 ]]

[[0.76505154 0.8972401  0.8456494  0.9193683 ]]

[[0.76592356 0.8977977  0.8463657  0.91984105]]

[[0.7667936 0.8983522 0.8470789 0.9203106]]

[[0.7676616 0.8989032 0.8477889 0.9207769]]

[[0.7685274  0.89945096 0.84849566 0.9212401 ]]

[[0.7693911 0.8999955 0.8491993 0.9217002]]

[[0.7702527  0.90053666 0.8498998  0.9221571 ]]

[[0.77111214 0.9010747  0.85059714 0.922611  ]]

[[0.77196944 0.90160936 0.8512913  0.9230617 ]]

[[0.7728246  0.9021409  0.85198236 0.9235095 ]]

[[0.7736775  0.90266925 0.8526702  0.9239543 ]]

[[0.77452826 0.9031944  0.85335505 0.924396  ]]

[[0.7753768 0.9037164 0.8540367 0.9248347]]

[[0.7762232  0.9042352  0.85471517 0.9252705 ]]

[[0.7770673  0.90475094 0.85539055 0.92570335]]

[[0.77790916 0.9052634  0.8560629  0.9261332 ]]

[[0.77874887 0.90577286 0.85673195 0.92656016]]

[[0.7795862  0.90627927 0.8573981  0.9269843 ]]

[[0.7804213 0.9067825 0.858061  0.9274055]]

[[0.7812542  0.9072827  0.85872096 0.9278238 ]]

[[0.7820847  0.90777993 0.85937774 0.9282393 ]]

[[0.782913  0.9082741 0.8600315 0.928652 ]]

[[0.783739   0.9087652  0.8606822  0.92906183]]

[[0.78456265 0.90925336 0.8613298  0.929469  ]]

[[0.78538394 0.90973854 0.86197436 0.9298733 ]]

[[0.7862029  0.91022074 0.8626159  0.9302748 ]]

[[0.7870195 0.9107    0.8632543 0.9306737]]

[[0.7878338  0.9111763  0.86388975 0.93106973]]

[[0.78864574 0.91164976 0.86452216 0.93146324]]

[[0.78945535 0.9121202  0.8651515  0.93185395]]

[[0.7902625 0.9125879 0.8657779 0.9322421]]

[[0.79106736 0.9130525  0.86640126 0.93262756]]

[[0.79186976 0.9135145  0.8670217  0.93301034]]

[[0.7926698  0.9139735  0.86763906 0.93339056]]

[[0.7934674  0.9144297  0.8682535  0.93376815]]

[[0.79426265 0.9148831  0.86886495 0.93414325]]

[[0.79505545 0.91533375 0.86947346 0.93451566]]

[[0.7958458  0.9157816  0.870079   0.93488574]]

[[0.7966338  0.9162267  0.8706816  0.93525314]]

[[0.79741925 0.9166691  0.87128115 0.93561804]]

[[0.7982023  0.9171086  0.87187797 0.9359805 ]]

[[0.7989829  0.91754556 0.87247175 0.9363405 ]]

[[0.7997611 0.9179797 0.8730627 0.9366981]]

[[0.8005369 0.9184112 0.8736506 0.9370531]]

[[0.8013101  0.91884005 0.8742358  0.93740577]]

[[0.80208087 0.9192663  0.874818   0.93775606]]

[[0.8028492 0.9196898 0.8753973 0.9381039]]

[[0.80361503 0.9201107  0.8759739  0.93844944]]

[[0.8043784  0.920529   0.8765475  0.93879265]]

[[0.8051393  0.9209448  0.87711823 0.93913347]]

[[0.80589765 0.92135787 0.8776862  0.93947196]]

[[0.80665356 0.92176855 0.8782513  0.93980825]]

[[0.80740696 0.9221765  0.8788136  0.9401421 ]]

[[0.80815786 0.9225821  0.8793731  0.94047374]]

[[0.8089062  0.9229851  0.87992984 0.9408031 ]]

[[0.8096521  0.9233855  0.88048375 0.9411302 ]]

[[0.8103955 0.9237835 0.8810349 0.9414551]]

[[0.8111363 0.9241791 0.8815832 0.9417779]]

[[0.81187475 0.92457217 0.8821289  0.9420984 ]]

[[0.81261057 0.9249628  0.88267165 0.9424168 ]]

[[0.81334394 0.92535096 0.8832118  0.94273293]]

[[0.8140747 0.9257367 0.8837492 0.9430469]]

[[0.814803   0.9261201  0.8842839  0.94335884]]

[[0.81552875 0.92650115 0.8848158  0.9436686 ]]

[[0.816252   0.9268798  0.88534504 0.9439762 ]]

[[0.81697273 0.92725605 0.8858717  0.9442818 ]]

[[0.81769097 0.92763    0.8863955  0.9445853 ]]

[[0.8184066  0.92800164 0.8869168  0.94488674]]

[[0.8191197 0.928371  0.8874354 0.9451862]]

[[0.8198303  0.92873794 0.88795125 0.94548357]]

[[0.82053834 0.92910266 0.88846457 0.9457789 ]]

[[0.8212439 0.9294652 0.8889752 0.9460723]]

[[0.8219469 0.9298253 0.8894833 0.9463636]]

[[0.8226474  0.9301833  0.8899887  0.94665307]]

[[0.82334536 0.930539   0.8904915  0.94694054]]

[[0.8240408  0.9308926  0.89099187 0.947226  ]]

[[0.8247337 0.9312439 0.8914895 0.9475095]]

[[0.8254241  0.93159294 0.89198464 0.9477912 ]]

[[0.82611185 0.93193996 0.8924773  0.948071  ]]

[[0.8267972  0.9322848  0.8929673  0.94834894]]

[[0.82747996 0.93262744 0.89345473 0.94862485]]

[[0.82816017 0.93296796 0.89393973 0.94889903]]

[[0.8288378  0.93330634 0.89442223 0.9491713 ]]

[[0.8295131  0.9336427  0.89490217 0.94944173]]

[[0.8301857  0.9339769  0.89537966 0.9497103 ]]

[[0.8308559  0.93430907 0.8958547  0.94997716]]

[[0.83152354 0.93463904 0.8963272  0.9502422 ]]

[[0.83218867 0.9349671  0.8967973  0.95050544]]

[[0.8328512  0.9352931  0.89726496 0.95076704]]

[[0.83351135 0.9356171  0.8977302  0.9510267 ]]

[[0.83416885 0.935939   0.898193   0.95128465]]

[[0.8348239  0.936259   0.8986533  0.95154095]]

[[0.83547646 0.93657684 0.89911133 0.9517955 ]]

[[0.83612657 0.93689287 0.8995669  0.9520483 ]]

[[0.8367741  0.93720686 0.90002006 0.9522995 ]]

[[0.8374192 0.937519  0.9004709 0.9525489]]

[[0.8380617  0.93782914 0.9009194  0.9527967 ]]

[[0.8387018  0.9381373  0.9013655  0.95304286]]

[[0.8393393  0.93844366 0.90180933 0.9532873 ]]

[[0.83997434 0.9387481  0.90225077 0.95353013]]

[[0.840607   0.9390507  0.90268993 0.9537715 ]]

[[0.8412371  0.93935126 0.9031268  0.9540111 ]]

[[0.84186476 0.93965    0.9035613  0.9542491 ]]

[[0.84248984 0.939947   0.9039936  0.95448554]]

[[0.8431125  0.9402421  0.90442365 0.95472044]]

[[0.8437328 0.9405354 0.9048513 0.9549538]]

[[0.8443506  0.94082683 0.9052768  0.9551855 ]]

[[0.8449659  0.9411165  0.9057001  0.95541567]]

[[0.8455787  0.9414044  0.9061211  0.95564437]]

[[0.84618914 0.9416905  0.9065399  0.95587164]]

[[0.846797   0.9419748  0.90695643 0.95609725]]

[[0.8474025  0.94225746 0.90737087 0.9563215 ]]

[[0.8480056  0.9425382  0.90778303 0.95654416]]

[[0.84860617 0.94281733 0.90819305 0.9567654 ]]

[[0.8492044  0.94309473 0.90860105 0.95698524]]

[[0.84980017 0.9433704  0.90900666 0.9572035 ]]

[[0.8503936  0.9436444  0.9094103  0.95742035]]

[[0.8509845  0.9439166  0.90981174 0.9576358 ]]

[[0.8515731  0.94418734 0.9102111  0.9578499 ]]

[[0.85215926 0.9444563  0.9106083  0.9580626 ]]

[[0.85274297 0.9447236  0.91100335 0.95827377]]

[[0.8533243 0.9449892 0.9113964 0.9584836]]

[[0.8539032 0.9452532 0.9117873 0.958692 ]]

[[0.85447973 0.94551563 0.91217613 0.95889914]]

[[0.8550539  0.94577646 0.91256297 0.95910496]]

[[0.85562575 0.9460357  0.9129477  0.9593093 ]]

[[0.8561953  0.9462933  0.9133304  0.95951235]]

[[0.85676235 0.94654936 0.9137111  0.9597142 ]]

[[0.85732704 0.9468038  0.91408974 0.95991445]]

[[0.8578894  0.9470567  0.91446644 0.96011364]]

[[0.8584494  0.94730806 0.9148411  0.96031135]]

[[0.8590071 0.9475579 0.9152137 0.960508 ]]

[[0.8595625  0.9478062  0.9155845  0.96070325]]

[[0.86011547 0.948053   0.9159532  0.96089727]]

[[0.8606662  0.94829834 0.91631997 0.9610899 ]]

[[0.8612146  0.9485422  0.91668475 0.9612813 ]]

[[0.8617606  0.94878453 0.91704774 0.9614716 ]]

[[0.86230445 0.9490253  0.9174087  0.9616606 ]]

[[0.86284584 0.94926465 0.9177677  0.96184844]]

[[0.8633851  0.94950265 0.9181249  0.96203494]]

[[0.86392194 0.94973904 0.91848016 0.9622203 ]]

[[0.8644566 0.9499741 0.9188335 0.9624045]]

[[0.8649889  0.95020777 0.919185   0.96258736]]

[[0.86551905 0.9504399  0.9195346  0.9627692 ]]

[[0.8660469  0.9506707  0.91988236 0.9629498 ]]

[[0.8665724  0.95090014 0.9202283  0.96312934]]

[[0.86709577 0.9511282  0.92057234 0.9633076 ]]

[[0.86761683 0.9513548  0.92091465 0.96348476]]

[[0.86813563 0.95158005 0.9212551  0.9636607 ]]

[[0.8686523 0.9518039 0.9215937 0.9638357]]

[[0.8691666  0.9520265  0.9219306  0.96400946]]

[[0.86967885 0.9522477  0.9222656  0.9641821 ]]

[[0.87018883 0.9524676  0.9225989  0.9643537 ]]

[[0.8706966  0.95268613 0.9229304  0.9645242 ]]

[[0.8712022  0.95290345 0.92326015 0.9646936 ]]

[[0.87170553 0.95311934 0.9235882  0.9648619 ]]

[[0.87220675 0.953334   0.92391443 0.96502906]]

[[0.8727058  0.95354736 0.9242389  0.9651953 ]]

[[0.8732026  0.95375943 0.92456174 0.96536046]]

[[0.8736974 0.9539702 0.9248829 0.9655245]]

[[0.87419    0.9541798  0.92520225 0.9656875 ]]

[[0.87468034 0.954388   0.92551994 0.9658495 ]]

[[0.8751687  0.95459515 0.92583597 0.9660106 ]]

[[0.8756549  0.95480096 0.9261504  0.9661705 ]]

[[0.87613887 0.9550055  0.92646295 0.9663294 ]]

[[0.8766207 0.9552089 0.926774  0.9664874]]

[[0.8771005  0.955411   0.92708343 0.9666444 ]]

[[0.87757826 0.955612   0.92739123 0.9668004 ]]

[[0.8780539  0.95581174 0.9276973  0.9669553 ]]

[[0.87852734 0.9560103  0.92800176 0.9671094 ]]

[[0.8789989  0.95620775 0.9283046  0.9672624 ]]

[[0.8794682 0.9564039 0.9286059 0.9674145]]

[[0.8799355  0.956599   0.92890567 0.9675656 ]]

[[0.8804008  0.9567929  0.92920375 0.96771586]]

[[0.8808639  0.95698565 0.9295003  0.9678651 ]]

[[0.88132507 0.9571773  0.92979527 0.96801347]]

[[0.8817841  0.9573677  0.93008864 0.9681608 ]]

[[0.8822412 0.9575571 0.9303806 0.9683073]]

[[0.8826963 0.9577454 0.9306708 0.968453 ]]

[[0.8831493 0.9579325 0.9309596 0.9685976]]

[[0.8836004  0.9581185  0.93124694 0.9687414 ]]

[[0.8840494  0.95830345 0.9315326  0.9688843 ]]

[[0.8844965 0.9584873 0.9318169 0.9690263]]

[[0.8849416  0.95867014 0.93209964 0.9691674 ]]

[[0.8853847 0.9588518 0.9323809 0.9693077]]

[[0.8858257 0.9590325 0.9326607 0.9694471]]

[[0.8862649  0.959212   0.93293905 0.96958566]]

[[0.8867021 0.9593906 0.9332158 0.9697233]]

[[0.8871373  0.959568   0.93349123 0.9698602 ]]

[[0.88757056 0.95974445 0.9337651  0.96999615]]

[[0.88800204 0.9599199  0.9340376  0.9701313 ]]

[[0.88843143 0.96009433 0.93430877 0.9702656 ]]

[[0.8888589  0.9602677  0.93457836 0.9703992 ]]

[[0.8892847  0.96044004 0.93484664 0.9705319 ]]

[[0.88970834 0.96061146 0.93511343 0.9706637 ]]

[[0.89013016 0.9607818  0.9353789  0.9707948 ]]

[[0.89055014 0.9609512  0.93564296 0.97092515]]

[[0.8909682  0.96111965 0.9359056  0.9710547 ]]

[[0.89138436 0.961287   0.93616694 0.97118336]]

[[0.8917987  0.96145356 0.9364268  0.97131133]]

[[0.8922111  0.9616191  0.9366853  0.97143847]]

[[0.8926217  0.9617836  0.9369426  0.97156477]]

[[0.8930305  0.96194726 0.9371984  0.9716905 ]]

[[0.8934374  0.96210986 0.9374529  0.97181535]]

[[0.8938426  0.96227163 0.9377062  0.97193944]]

[[0.8942458  0.9624324  0.93795806 0.97206277]]

[[0.89464736 0.9625923  0.9382085  0.97218543]]

[[0.89504695 0.96275127 0.93845785 0.97230726]]

[[0.89544487 0.96290934 0.93870574 0.97242844]]

[[0.89584094 0.9630664  0.9389525  0.97254884]]

[[0.89623517 0.9632227  0.93919784 0.9726686 ]]

[[0.8966277  0.96337795 0.939442   0.97278756]]

[[0.89701843 0.96353257 0.93968475 0.9729058 ]]

[[0.8974075 0.9636861 0.9399264 0.9730234]]

[[0.89779466 0.9638388  0.94016665 0.97314024]]

[[0.8981802  0.9639906  0.94040585 0.9732564 ]]

[[0.8985639  0.96414167 0.9406436  0.9733718 ]]

[[0.89894587 0.9642917  0.94088024 0.9734867 ]]

[[0.8993262  0.96444106 0.9411157  0.9736008 ]]

[[0.89970475 0.9645894  0.9413498  0.9737143 ]]

[[0.90008163 0.9647371  0.9415828  0.973827  ]]

[[0.90045685 0.9648838  0.9418145  0.9739391 ]]

[[0.90083027 0.9650298  0.9420451  0.9740505 ]]

[[0.9012021  0.9651748  0.9422744  0.97416127]]

[[0.90157217 0.96531916 0.9425026  0.9742715 ]]

[[0.9019405  0.96546257 0.9427296  0.9743809 ]]

[[0.90230733 0.96560526 0.94295543 0.9744898 ]]

[[0.9026724  0.9657471  0.9431801  0.97459793]]

[[0.9030359  0.96588814 0.9434036  0.9747055 ]]

[[0.90339774 0.9660284  0.9436259  0.97481245]]

[[0.90375787 0.9661679  0.9438472  0.9749188 ]]

[[0.9041164  0.96630657 0.9440673  0.9750245 ]]

[[0.9044733  0.96644455 0.9442862  0.9751296 ]]

[[0.9048286  0.9665817  0.944504   0.97523403]]

[[0.90518236 0.9667182  0.9447208  0.97533786]]

[[0.9055344  0.9668538  0.94493645 0.9754411 ]]

[[0.90588486 0.9669886  0.94515085 0.97554374]]

[[0.90623385 0.96712273 0.9453643  0.97564584]]

[[0.90658116 0.9672561  0.9455766  0.97574735]]

[[0.90692693 0.96738887 0.9457878  0.9758482 ]]

[[0.90727115 0.9675207  0.945998   0.97594845]]

[[0.9076137  0.9676519  0.94620705 0.9760482 ]]

[[0.9079548  0.9677824  0.9464151  0.97614735]]

[[0.9082944  0.96791214 0.9466221  0.97624594]]

[[0.9086324  0.9680411  0.94682795 0.97634387]]

[[0.90896887 0.9681694  0.94703275 0.9764414 ]]

[[0.9093037  0.96829706 0.9472366  0.97653824]]

[[0.9096372  0.9684239  0.94743943 0.9766346 ]]

[[0.90996915 0.96855015 0.9476412  0.9767304 ]]

[[0.91029954 0.9686756  0.9478419  0.9768256 ]]

[[0.9106285  0.9688005  0.9480416  0.97692037]]

[[0.91095597 0.9689247  0.94824034 0.9770145 ]]

[[0.91128194 0.96904814 0.948438   0.9771081 ]]

[[0.9116064  0.96917087 0.94863474 0.9772012 ]]

[[0.9119294  0.96929306 0.9488303  0.9772938 ]]

[[0.91225094 0.9694145  0.94902503 0.97738576]]

[[0.9125711  0.96953523 0.94921875 0.97747725]]

[[0.91288966 0.9696554  0.94941163 0.97756827]]

[[0.9132069 0.9697749 0.9496034 0.9776588]]

[[0.91352266 0.96989375 0.9497942  0.97774875]]

[[0.913837   0.97001195 0.949984   0.9778382 ]]

[[0.91414994 0.9701295  0.9501729  0.9779272 ]]

[[0.91446143 0.97024643 0.95036095 0.9780156 ]]

[[0.91477156 0.9703627  0.9505479  0.97810364]]

[[0.9150802  0.97047836 0.95073396 0.97819114]]

[[0.9153876  0.97059345 0.9509191  0.97827804]]

[[0.9156934  0.9707079  0.9511034  0.97836465]]

[[0.915998  0.9708217 0.9512866 0.9784506]]

[[0.9163012  0.9709348  0.95146906 0.9785362 ]]

[[0.9166029  0.97104746 0.9516505  0.97862124]]

[[0.9169033  0.9711594  0.95183104 0.9787058 ]]

[[0.91720235 0.97127086 0.9520107  0.97879   ]]

[[0.9175001  0.97138166 0.95218956 0.9788736 ]]

[[0.91779643 0.97149175 0.95236737 0.97895676]]

[[0.91809154 0.97160137 0.9525444  0.9790396 ]]

[[0.91838527 0.97171044 0.9527205  0.97912186]]

[[0.9186776  0.9718188  0.95289576 0.9792036 ]]

[[0.9189687  0.9719268  0.95307016 0.979285  ]]

[[0.9192584  0.97203404 0.9532437  0.97936594]]

[[0.9195469  0.97214085 0.95341635 0.9794464 ]]

[[0.91983396 0.97224694 0.9535881  0.97952646]]

[[0.9201199  0.97235256 0.95375913 0.9796061 ]]

[[0.9204044  0.9724576  0.9539292  0.97968525]]

[[0.92068774 0.97256213 0.9540984  0.979764  ]]

[[0.9209698  0.97266597 0.9542669  0.97984225]]

[[0.92125046 0.97276944 0.9544344  0.9799201 ]]

[[0.92152995 0.9728723  0.9546012  0.97999763]]

[[0.9218081  0.97297466 0.9547672  0.98007464]]

[[0.92208517 0.97307634 0.95493233 0.9801513 ]]

[[0.92236084 0.9731776  0.95509666 0.9802274 ]]

[[0.9226354  0.97327834 0.9552602  0.9803033 ]]

[[0.9229086 0.9733785 0.955423  0.9803786]]

[[0.9231806  0.97347826 0.9555848  0.9804536 ]]

[[0.9234514  0.9735773  0.95574594 0.9805282 ]]

[[0.923721   0.97367597 0.9559064  0.9806024 ]]

[[0.9239894  0.9737741  0.9560659  0.98067605]]

[[0.9242567  0.97387165 0.9562247  0.9807494 ]]

[[0.92452264 0.9739688  0.95638275 0.9808224 ]]

[[0.9247874  0.97406536 0.95654    0.980895  ]]

[[0.92505103 0.9741615  0.95669645 0.9809672 ]]

[[0.9253135  0.9742571  0.95685214 0.98103905]]

[[0.9255748  0.9743522  0.95700717 0.98111045]]

[[0.92583483 0.9744468  0.95716137 0.98118144]]

[[0.92609376 0.97454095 0.95731485 0.9812522 ]]

[[0.92635155 0.9746346  0.95746744 0.9813224 ]]

[[0.9266082 0.9747277 0.9576195 0.9813923]]

[[0.9268636  0.9748205  0.9577707  0.98146194]]

[[0.927118   0.9749127  0.9579212  0.98153114]]

[[0.92737114 0.9750044  0.9580711  0.9816    ]]

[[0.9276232 0.9750957 0.9582201 0.9816684]]

[[0.9278742 0.9751864 0.9583685 0.9817364]]

[[0.92812407 0.97527677 0.9585161  0.98180425]]

[[0.92837274 0.9753667  0.958663   0.98187155]]

[[0.9286204  0.97545606 0.95880926 0.9819386 ]]

[[0.92886686 0.9755451  0.9589548  0.98200524]]

[[0.92911226 0.9756336  0.9590996  0.9820716 ]]

[[0.92935663 0.97572166 0.9592438  0.98213756]]

[[0.9295999  0.9758093  0.9593872  0.98220325]]

[[0.92984205 0.9758965  0.95952994 0.98226845]]

[[0.93008316 0.9759832  0.959672   0.9823334 ]]

[[0.9303231 0.9760695 0.9598134 0.9823981]]

[[0.93056214 0.9761553  0.95995414 0.9824623 ]]

[[0.9308    0.9762407 0.9600942 0.9825263]]

[[0.9310368  0.9763258  0.96023357 0.9825899 ]]

[[0.9312727  0.9764104  0.96037227 0.98265314]]

[[0.9315074 0.9764945 0.9605103 0.9827161]]

[[0.93174106 0.97657824 0.96064776 0.9827787 ]]

[[0.93197376 0.9766616  0.96078455 0.982841  ]]

[[0.93220544 0.9767444  0.9609206  0.98290306]]

[[0.93243605 0.97682697 0.9610561  0.9829647 ]]

[[0.9326657  0.976909   0.9611909  0.98302597]]

[[0.93289423 0.9769907  0.96132505 0.98308706]]

[[0.93312186 0.97707194 0.9614586  0.98314774]]

[[0.9333484 0.9771527 0.9615916 0.9832081]]

[[0.933574   0.97723323 0.9617239  0.9832683 ]]

[[0.9337986 0.9773132 0.9618556 0.9833281]]

[[0.93402225 0.977393   0.9619866  0.9833876 ]]

[[0.9342449 0.9774721 0.962117  0.9834468]]

[[0.93446654 0.97755104 0.96224695 0.98350567]]

[[0.9346872  0.97762954 0.9623761  0.98356426]]

[[0.93490684 0.9777076  0.96250474 0.9836225 ]]

[[0.93512565 0.97778535 0.9626328  0.9836805 ]]

[[0.93534344 0.9778626  0.96276015 0.9837382 ]]

[[0.9355602  0.97793955 0.962887   0.98379564]]

[[0.9357761  0.97801614 0.96301323 0.98385274]]

[[0.93599105 0.9780924  0.9631388  0.98390967]]

[[0.9362051 0.9781682 0.9632639 0.9839662]]

[[0.9364182 0.9782437 0.9633884 0.9840224]]

[[0.9366302  0.97831875 0.9635123  0.9840784 ]]

[[0.93684137 0.9783934  0.9636356  0.984134  ]]

[[0.9370517  0.9784678  0.9637584  0.98418945]]

[[0.9372611  0.9785418  0.96388066 0.98424464]]

[[0.93746954 0.9786154  0.96400225 0.98429954]]

[[0.93767715 0.9786887  0.96412337 0.98435414]]

[[0.9378838  0.9787617  0.9642438  0.98440844]]

[[0.9380895  0.9788342  0.96436375 0.9844625 ]]

[[0.9382944 0.9789065 0.9644832 0.9845163]]

[[0.9384984  0.97897834 0.9646021  0.98456985]]

[[0.93870133 0.97904986 0.9647203  0.98462313]]

[[0.9389036  0.9791211  0.9648381  0.98467606]]

[[0.9391049  0.9791919  0.9649553  0.98472875]]

[[0.9393053  0.97926235 0.9650719  0.98478127]]

[[0.939505   0.97933257 0.9651881  0.98483354]]

[[0.9397036  0.9794024  0.9653037  0.98488545]]

[[0.93990153 0.9794718  0.9654188  0.98493713]]

[[0.9400985 0.979541  0.9655334 0.9849886]]

[[0.9402946  0.97960985 0.9656474  0.98503983]]

[[0.94048995 0.9796784  0.9657609  0.98509073]]

[[0.94068444 0.97974646 0.965874   0.9851415 ]]

[[0.94087803 0.97981435 0.96598643 0.98519194]]

[[0.9410709  0.9798819  0.9660985  0.98524207]]

[[0.9412627 0.9799492 0.9662099 0.985292 ]]

[[0.94145393 0.98001605 0.9663208  0.9853418 ]]

[[0.9416442  0.9800826  0.96643126 0.98539126]]

[[0.94183373 0.98014885 0.9665413  0.98544055]]

[[0.94202244 0.98021483 0.9666508  0.98548955]]

[[0.94221026 0.98028046 0.96675974 0.98553824]]

[[0.94239736 0.9803458  0.9668683  0.98558676]]

[[0.9425836  0.98041075 0.9669763  0.98563504]]

[[0.9427691  0.9804755  0.96708375 0.98568314]]

[[0.94295377 0.9805399  0.96719074 0.98573095]]

[[0.9431377  0.98060405 0.96729726 0.98577857]]

[[0.94332075 0.9806678  0.96740335 0.98582596]]

[[0.94350314 0.9807313  0.9675089  0.9858731 ]]

[[0.94368464 0.9807946  0.96761405 0.9859201 ]]

[[0.9438655 0.9808575 0.9677187 0.9859666]]

[[0.94404536 0.9809201  0.9678229  0.9860131 ]]

[[0.94422466 0.9809825  0.9679267  0.98605937]]

[[0.9444031  0.9810445  0.96802986 0.9861055 ]]

[[0.94458085 0.9811063  0.9681327  0.9861513 ]]

[[0.94475776 0.9811678  0.968235   0.9861968 ]]

[[0.944934   0.981229   0.96833694 0.9862422 ]]

[[0.9451094 0.9812898 0.9684383 0.9862874]]

[[0.94528407 0.9813504  0.9685393  0.9863323 ]]

[[0.94545805 0.9814108  0.96863985 0.98637706]]

[[0.9456314 0.9814709 0.96874   0.9864216]]

[[0.94580376 0.9815307  0.9688395  0.9864659 ]]

[[0.9459756 0.9815902 0.9689388 0.98651  ]]

[[0.94614667 0.98164946 0.96903753 0.98655397]]

[[0.94631696 0.9817084  0.96913594 0.9865976 ]]

[[0.94648653 0.9817671  0.9692338  0.9866411 ]]

You should not use the sigmoid activation function. Use RELU instead.
Because the sigmoid function confine the number to range(-1, 1).

model = tf.keras.Sequential([

            Dense(units=4, activation=tf.nn.relu),

            Dense(units=4, activation=tf.nn.relu)

        ])