Náhodná čísla

Intermediate Python

Hugo Bowne-Anderson

Data Scientist at DataCamp

Intermediate Python

Intermediate Python

Intermediate Python

Intermediate Python

Intermediate Python

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Intermediate Python

Jak to vyřešit?

  • Analyticky
  • Simulovat proces
    • Hackerská statistika!
Intermediate Python

Generátory náhodných čísel

import numpy as np
np.random.rand()      # Pseudo-random numbers

0.9535543896720104    # Mathematical formula

np.random.seed(123)    # Starting from a seed
np.random.rand()

0.6964691855978616

np.random.rand()

0.28613933495037946
Intermediate Python

Generátory náhodných čísel

np.random.seed(123)
np.random.rand()

0.696469185597861    # Same seed: same random numbers!

np.random.rand()     # Ensures "reproducibility"

0.28613933495037946
Intermediate Python

Hod mincí

game.py

import numpy as np

np.random.seed(123)

coin = np.random.randint(0,2)  # Randomly generate 0 or 1

print(coin)

0
Intermediate Python

Hod mincí

game.py

import numpy as np
np.random.seed(123)
coin = np.random.randint(0,2)  # Randomly generate 0 or 1
print(coin)

if coin == 0:
    print("heads")

else:
    print("tails")

0
heads
Intermediate Python

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Intermediate Python

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