Tensorflow एक मशीन लर्निंग फ्रेमवर्क है जो Google द्वारा प्रदान किया जाता है। यह एक ओपन-सोर्स फ्रेमवर्क है जिसका उपयोग एल्गोरिदम, गहन शिक्षण अनुप्रयोगों और बहुत कुछ को लागू करने के लिए पायथन के साथ संयोजन में किया जाता है। इसका उपयोग अनुसंधान और उत्पादन उद्देश्यों के लिए किया जाता है। इसमें अनुकूलन तकनीकें हैं जो जटिल गणितीय कार्यों को शीघ्रता से करने में मदद करती हैं।
कोड की निम्न पंक्ति का उपयोग करके विंडोज़ पर 'टेंसरफ़्लो' पैकेज स्थापित किया जा सकता है -
pip install tensorflow
Tensor एक डेटा संरचना है जिसका उपयोग TensorFlow में किया जाता है। यह प्रवाह आरेख में किनारों को जोड़ने में मदद करता है। इस प्रवाह आरेख को 'डेटा प्रवाह ग्राफ' के रूप में जाना जाता है। टेंसर और कुछ नहीं बल्कि एक बहुआयामी सरणी या एक सूची है।
'आईएमडीबी' डेटासेट में 50 हजार से अधिक फिल्मों की समीक्षाएं हैं। यह डेटासेट आमतौर पर प्राकृतिक भाषा प्रसंस्करण से जुड़े कार्यों के लिए उपयोग किया जाता है।
हम नीचे दिए गए कोड को चलाने के लिए Google सहयोग का उपयोग कर रहे हैं। Google Colab या Colaboratory ब्राउज़र पर पायथन कोड चलाने में मदद करता है और इसके लिए शून्य कॉन्फ़िगरेशन और GPU (ग्राफ़िकल प्रोसेसिंग यूनिट) तक मुफ्त पहुंच की आवश्यकता होती है। जुपिटर नोटबुक के ऊपर कोलैबोरेटरी बनाई गई है।
IMDB डेटासेट के लिए कोड स्निपेट निम्नलिखित है -
उदाहरण
def vectorize_text(text, label):
text = tf.expand_dims(text, −1)
return vectorize_layer(text), label
text_batch, label_batch = next(iter(raw_train_ds))
first_review, first_label = text_batch[0], label_batch[0]
print("Review is ", first_review)
print("Label is ", raw_train_ds.class_names[first_label])
print("Vectorized review is ", vectorize_text(first_review, first_label))
print("1222 −−−> ",vectorize_layer.get_vocabulary()[1222])
print(" 451 −−−> ",vectorize_layer.get_vocabulary()[451])
print('Vocabulary size: {}'.format(len(vectorize_layer.get_vocabulary())))
train_ds = raw_train_ds.map(vectorize_text)
val_ds = raw_val_ds.map(vectorize_text)
test_ds = raw_test_ds.map(vectorize_text) कोड क्रेडिट - https://www.tensorflow.org/tutorials/keras/text_classification
आउटपुट
Review is tf.Tensor(b'Silent Night, Deadly Night 5 is the very last of the series, and like part 4, it\'s unrelated to the first three except by title and the fact that it\'s a Christmas-themed horror flick.<br /><br />Except to the oblivious, there\'s some obvious things going on here...Mickey Rooney plays a toymaker named Joe Petto and his creepy son\'s name is Pino. Ring a bell, anyone? Now, a little boy named Derek heard a knock at the door one evening, and opened it to find a present on the doorstep for him. Even though it said "don\'t open till Christmas", he begins to open it anyway but is stopped by his dad, who scolds him and sends him to bed, and opens the gift himself. Inside is a little red ball that sprouts Santa arms and a head, and proceeds to kill dad. Oops, maybe he should have left well-enough alone. Of course Derek is then traumatized by the incident since he watched it from the stairs, but he doesn\'t grow up to be some killer Santa, he just stops talking.<br /><br />There\'s a mysterious stranger lurking around, who seems very interested in the toys that Joe Petto makes. We even see him buying a bunch when Derek\'s mom takes him to the store to find a gift for him to bring him out of his trauma. And what exactly is this guy doing? Well, we\'re not sure but he does seem to be taking these toys apart to see what makes them tick. He does keep his landlord from evicting him by promising him to pay him in cash the next day and presents him with a "Larry the Larvae" toy for his kid, but of course "Larry" is not a good toy and gets out of the box in the car and of course, well, things aren\'t pretty.<br /><br />Anyway, eventually what\'s going on with Joe Petto and Pino is of course revealed, and as with the old story, Pino is not a "real boy". Pino is probably even more agitated and naughty because he suffers from "Kenitalia" (a smooth plastic crotch) so that could account for his evil ways. And the identity of the lurking stranger is revealed too, and there\'s even kind of a happy ending of sorts. Whee.<br /><br />A step up from part 4, but not much of one. Again, Brian Yuzna is involved, and Screaming Mad George, so some decent special effects, but not enough to make this great. A few leftovers from part 4 are hanging around too, like Clint Howard and Neith Hunter, but that doesn\'t really make any difference. Anyway, I now have seeing the whole series out of my system. Now if I could get some of it out of my brain. 4 out of 5.', shape=(), dtype=string) Label is neg Vectorized review is (<tf.Tensor: shape=(1, 250), dtype=int64, numpy= array([[1287, 313, 2380, 313, 661, 7, 2, 52, 229, 5, 2, 200, 3, 38, 170, 669, 29, 5492, 6, 2, 83, 297, 549, 32, 410, 3, 2, 186, 12, 29, 4, 1, 191, 510, 549, 6, 2, 8229, 212, 46, 576, 175, 168, 20, 1, 5361, 290, 4, 1, 761, 969, 1, 3, 24, 935, 2271, 393, 7, 1, 1675, 4, 3747, 250, 148, 4, 112, 436, 761, 3529, 548, 4, 3633, 31, 2, 1331, 28, 2096, 3, 2912, 9, 6, 163, 4, 1006, 20, 2, 1, 15, 85, 53, 147, 9, 292, 89, 959, 2314, 984, 27, 762, 6, 959, 9, 564, 18, 7, 2140, 32, 24, 1254, 36, 1, 85, 3, 3298, 85, 6, 1410, 3, 1936, 2, 3408, 301, 965, 7, 4, 112, 740, 1977, 12, 1, 2014, 2772, 3, 4, 428, 3, 5177, 6, 512, 1254, 1, 278, 27, 139, 25, 308, 1, 579, 5, 259, 3529, 7, 92, 8981, 32, 2, 3842, 230, 27, 289, 9, 35, 2, 5712, 18, 27, 144, 2166, 56, 6, 26, 46, 466, 2014, 27, 40, 2745, 657, 212, 4, 1376, 3002, 7080, 183, 36, 180, 52, 920, 8, 2, 4028, 12, 969, 1, 158, 71, 53, 67, 85, 2754, 4, 734, 51, 1, 1611, 294, 85, 6, 2, 1164, 6, 163, 4, 3408, 15, 85, 6, 717, 85, 44, 5, 24, 7158, 3, 48, 604, 7, 11, 225, 384, 73, 65, 21, 242, 18, 27, 120, 295, 6, 26, 667, 129, 4028, 948, 6, 67, 48, 158, 93, 1]])>, <tf.Tensor: shape=(), dtype=int32, numpy=0>) 1222 ---> stick 451 ---> already Vocabulary size: 10000
स्पष्टीकरण
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'vectorize_text' नाम के एक फंक्शन को परिभाषित किया गया है, जो मूल रूप से दिए गए टेक्स्ट को संख्याओं में बदल देता है ताकि इसे कंप्यूटर समझ सके।
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मॉडल को प्रशिक्षित करने के लिए IMDB डेटासेट का उपयोग किया जाता है।
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कंसोल पर समीक्षा, लेबल और वेक्टरकृत डेटा का एक नमूना प्रदर्शित होता है।
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प्रशिक्षण डेटा, परीक्षण डेटा और सत्यापन डेटा सभी वेक्टरकृत हैं।