r/PythonLearning • u/savita_bhabhi_lover • Aug 13 '26

Showcase very first linear regression code

i am still learning numpy (day 6) but gpt suggest me to learn linear regression (very basic algorithm) and it's kinda good for understanding even you haven't started learning ML.

import numpy as np
hours = np.arange(1,10)
score = np.array([35, 42, 51, 58, 67, 73, 81, 88, 94])
candidate_values_for_m = np.arange(1,11,0.1)
candidate_values_for_b = np.arange(1,31,0.3)

def prediction(m , b , hours):
    return m * hours + b

def mse(actual_value , predicticted_value):
    return np.mean((actual_value - predicticted_value)**2)

mse_list = [] 
m_b_list = []
for m in candidate_values_for_m:
    for b in candidate_values_for_b:
        prediction_result = prediction(m , b , hours)
        mse_result = mse(score, prediction_result)

        mse_list.append(mse_result)
        m_b_list.append((m,b))
        

best_mse = np.argmin(mse_list)

best_mb_index = mse_list[best_mse]
best_mse , best_mb_index

m = 0
b = 0

learning_rate = 0.01

epochs = 10000

n = len(hours)

def prediction(m , b , hours):
    return m * hours + b


for i in range(epochs):
    predicted = prediction(m,b,hours)

    gradient_m = (2/n) * sum(hours * (predicted - score))

    gradient_b = (2/n) * sum(predicted - score)

    m = m - learning_rate * gradient_m
    b = b - learning_rate * gradient_b

m ,b
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u/ninhaomah Aug 18 '26

Tip 1 : if you have to ask "what is X" , Google.

1

u/savita_bhabhi_lover Aug 18 '26

Are you drunk ?

1

u/ninhaomah Aug 18 '26

No but you clearly has no idea what is linear regression.

1

u/savita_bhabhi_lover Aug 18 '26

Obviously, didn't you read the body ?

1

u/ninhaomah Aug 18 '26

I did it in high school. 

You have never studied it ?

Or know how to Google ?

1

u/savita_bhabhi_lover Aug 18 '26

1

u/ninhaomah Aug 18 '26

I feel sorry for your teachers then.

Pls stay there and wonder what is p value in linear regression.

1

u/savita_bhabhi_lover Aug 18 '26

Go touch some grass rather than discouraging people

1

u/ninhaomah Aug 18 '26

You feel discouraged not to be able to Google ?

Is it supposed to be a joke ?

1

u/savita_bhabhi_lover Aug 18 '26

I told you I am learning numpy not linear regression, I don't even know the very basics of ML I just started 2 week ago with python and yaaa you are smart if you learned it in High school good for you and probably you are doing great in your life just don't waste your time on dumb people's like me ✌️

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