The night passed, and Su Ye was dying.

There is absolutely no way to resist, if you can stand Liu Lianlian, can you still stand up to Fang Xiaowu?

Of course, Liu Lianlian is not much better, those who play with fire will set themselves on fire, arouse the bestiality of Fang Jiao's beast, and want to get out of the whole body?

Naive!

At first, Liu Lianlian pressed Su Ye, and then Su Ye began bloody revenge, in short, it was all cheap Fang Xiaowu, and it was a crazy night.

It feels like I've done nothing at all, and the time has already come to the 3rd.

In the morning, the sisters hugged each other again to catch up on sleep, and Fang Xiaowu was typing the code in the living room.

The required computer courses of Yunda Finance are VB programming, C language and C++ are elective, and Fang Xiaowu also taught himself Python.

This thing was recommended to him by Bai Wushuang, who went to the software academy to take a class and quickly realized the benefits of this language.

Concise, clear, easy to read, strong scalability, especially extensibility, a vast number of extended libraries, a vast number of neural network packages, you can test it, and it is very easy to practice coding by yourself, which is extremely friendly to novices.

Some time ago, IEEE released the 2017 programming language rankings, Python ranked first, fortunately, the Yunda Planning Institute is strong enough, keeps pace with the times, and has this professional course, so that Fang Xiaowu will not have to learn completely by himself.

At present, he is still far from designing a practical enough artificial neural network, and the training is even more difficult - it is not a large company like BAT, and the training data is difficult to obtain.

Fortunately, there are enough packages and test data in Python, and big things can't be done, verifying ideas and learning processes, which can be guaranteed, otherwise Fang Xiaowu wouldn't know how to teach Su Ye.

Now you know how pitiful this unlocking quest is, right?

Change people and kneel in minutes.

When it was almost noon, the sisters Haitang slept late, got up with difficulty, and crawled to wash and eat.

After eating a hearty lunch, which can be regarded as recovering some energy, Teacher Fang continued to make up lessons for Su Ye.

"I haven't told you before, how the neural weight F is obtained, they are important parameters of the whole model, not designed, but trained. ”

"In the news, we often talk about training artificial intelligence, and this training is the process of machine learning, with the aim of getting that important weight F, so that neural networks can be used to solve practical problems. ”

"How do you train?"

"Get enough training samples, both the input data X1X2 and the corresponding output data Y, to deduce F1F2. ”

"Until here, do you understand?"

Su Ye nodded, writing and drawing in his small notebook, looking very serious.

"Understand, simplified description, is to use two deterministic values to find an unknown solution, wait until the correct solution of the weights is found, and then enter the data at will, we can get the output value Y we want. ”

Liu Lian was surprised with a small leather whip: "Big girl, you are so smart? I am really impressed with you......"

Su Ye rolled his eyes violently: "I'll be behind you with that thing, you must be smarter than me." ”

In fact, they still don't understand why Fang Xiaowu has to teach Su Ye this thing, they can't use it at all.

But the super high favorability makes them not think about it, it can be said that it is reasonable or not, anyway, it is still fun to play like this......

By the end of the evening, Su Ye had formally established an understanding of artificial neural networks, which was a little shallow, but essentially correct.

In her words-

"It's a very simple machine learning tool, and it's not smart at all!"

"What kind of training, the words are so lofty, isn't it actually repeated calculations, trial and error? Find the most reasonable and reliable weight, so that the result is as close to the correct answer as possible - in fact, it is not 100% correct at all. ”

Liu Lianlian, who had been following the afternoon class, suddenly realized: "So that's what happened! I really think it can think like a human being......

Fang Xiaowu smiled: "How is it possible, thinking like a human being, this is the traditional artificial intelligence idea proposed in the 60s, and it has long been proven to be infeasible." Now all artificial intelligence, in fact, is taking the route of statistics + calculation, it is completely a machine tool, no matter how fast the computing speed is, it has nothing to do with human intelligence in essence. ”

Liu Lianlian retorted unconvincedly: "Then the alpha dog still won Ke Jie! Doesn't it mean that Go is the last position of mankind?"

As a result, without waiting for Fang Xiaowu to speak, Su Ye sneered.

"It is not uncommon for machines that use algorithms and models to complete probability calculations to defeat humans in any field, but one thing is never the same - do human beings act and think by calculating probabilities?

Liu Lianlian was speechless for a moment, racking her brains to find a way to refute her, and the two quickly quarreled together.

Fang Xiaowu smiled, and did not intend to correct their misunderstanding, so he went with them.

At this point, 1/3 of the unlocking tasks have been completed, and the remaining teaching content is the role and meaning.

Because he was not sure about the judgment criteria of the system, the worst preparation he made was to let Su Ye personally build a simple neural network and complete the test with the data in Python.

It's a hassle, but judging from the recent gains, it's actually worth it.

Through the teaching of Su Ye, he has gained a lot of himself, and his understanding and mastery of this knowledge have reached a considerable height.

Although neural networks are only a small part of artificial intelligence, it is a coincidence that the main research direction of artificial intelligence of Cloud Zhilian is neural networks, after all, this thing performs extremely well in speech recognition and machine translation.

If he goes deeper in this direction, he will soon be able to keep up with the progress of Yun Zhilian - Xueba is so unreasonable.

After dinner, Su Ye was sent home to recuperate, and Liu Lianlian dragged his sick body and insisted on going to Migu to take a look.

Fang Xiaowu didn't send the two sisters, stayed in the room and continued to study hard - this product is simply an ascetic, in addition to reading every day, it is studying, and life is boring and boring.

So he can say to Mr. Da Mo without shame: I have my current success because I work hard enough and focus enough!

Da Mo always had that expression at that time, admiration mixed with distress, and he stopped talking and pursed his lips......

Back to the point.

At this point in time, no one usually bothers him.

Cheng Chi, the ruffian Lu's rich second generation is already very familiar with his style, activities like feasts, he never participates, and occasionally goes out to eat with books, one comes and goes, when there is no serious business, everyone simply no longer looks for him, at most occasionally have a meal.

In this situation like now, the time has passed 7 o'clock, except for Mo Ziyan who occasionally harasses him, basically no one will ask him to go out to play.

Today, however, there is an exception.

The phone rings, and it's a ringtone that rarely rings.

The person who came opened his mouth and said, "Is it inconvenient for Fang to come out and have a drink with me?"