Multiple_Linear_Regression

 #!/usr/bin/env python

# coding: utf-8

# In[1]:


import numpy as np
import matplotlib.pyplot as plt
import pandas as pd


# In[2]:


myfile="D:\Sunny115\week2_50_Startups.csv"
dataset=pd.read_csv(myfile)
X=dataset.iloc[:,:-1].values
y=dataset.iloc[:,-1].values


# In[6]:


#encoding categorical data
from sklearn.compose import ColumnTransformer
from sklearn.preprocessing import OneHotEncoder
ct=ColumnTransformer(transformers=[('encoder',OneHotEncoder(),[3])],remainder='passthrough')
X=np.array(ct.fit_transform(X))


# In[8]:


print(X)


# In[13]:


#splitting the dataset
from sklearn.model_selection import train_test_split
X_train,X_test,y_train,y_test=train_test_split(X,y,test_size=0.2,random_state=0)


# In[14]:


from sklearn.linear_model import LinearRegression
regressor=LinearRegression()
regressor.fit(X_train,y_train)


# In[15]:


y_pred=regressor.predict(X_test)
print(y_test)
print(y_pred)


# In[16]:


from sklearn.metrics import r2_score
r2_score(y_test,y_pred)


# In[ ]:





Comments

Post a Comment

Popular posts from this blog

1.Import and Export(How to read csv file using manualvfunction)

#!/usr/bin/env python # coding: utf-8 # In[5]: # Week1: Write a python program to import and export data from/to CSV file ######################################################################### ## (1) How to Read CSV File using Manual Function import pandas as pd def load_csv ( filepath ):     data = []     col = []     checkcol = False     with open (filepath) as f:         for val in f.readlines():             val = val.strip()             val = val.split( ',' )             if checkcol is False :                 col = val                 checkcol = True             else :                 data.append(val)     df = pd.DataFrame( data = data, columns = col)     return df # Replace 'yourfile.csv' with the actual file path myfile = r "C: \U sers \91 887 \O neDrive\Desktop \M achine_Learning\Sales_Records.csv" myData = load_csv(myfile) print (myData.head()) # In[ ]: # In[6]: ## (2) How to Read CSV File in python Using Pandas? df = pd.read_cs
Read more

How to became a junior Engineer

How to become a junior Engineer. We know that about a junior Engineer. We and all have only a question  How I Became? I want to explain you. Every Central and state Government has Organized exam for preparing junior Engineeringlike (polytechnic , Diploma cources etc) Step 1 . Junior Engineer course exam  is organized every year on the month of April,may,and June. Fill the registration appearing form . Step 2. prepare the examination for the junior engineering. Step 3. Appear the examination on the junior engineering Step 4.   If you will pass out the exam then you will appear on the counselling .this time counselling is organized on online so you will fill your choice  branch like(civile engineering,electrical engineering, mechanical engineering, computer science and engineering, mining engineering etc)and choice your college . Step 4.  After fill your choice and college you will allotted a particular branch and college if you like the branch and college you will accept the counselling
Read more

K Means_Clustering

  #!/usr/bin/env python # coding: utf-8 # In[3]: import pandas as pd import numpy as np import matplotlib.pyplot as plt df = pd.read_csv( r "C: \U sers \91 887 \O neDrive\Desktop \M achine_Learning\week4_Mall_Customers.csv" ) x = df.iloc[:, [ 3 , 4 ]].values # In[4]: from sklearn.cluster import KMeans wcss_list = [] for i in range ( 1 , 11 ):     kmeans = KMeans( n_clusters = i, init = 'k-means++' , random_state = 42 )     kmeans.fit(x)     wcss_list.append(kmeans.inertia_) plt.plot( range ( 1 , 11 ), wcss_list) plt.title( 'The Elobw Method Graph' ) plt.xlabel( 'Number of clusters(k)' ) plt.ylabel( 'wcss_list' ) plt.show() # In[ ]:
Read more