To implement QR decomposition algorithm using the Gram-Schmidt method.
- Hardware – PCs
- Anaconda – Python 3.7 Installation / Moodle-Code Runner
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Intialize the matrix Q and u
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The vector u and e is given by
#Program to QR decomposition using the Gram-Schmidt method
#Developed by: Meenu.S
#RegisterNumber: 23003303
import numpy as np
A=np.array(eval(input()))
n,m=A.shape
Q=np.zeros((n,n))
u=np.zeros((n,n))
u[:,0]=A[:,0]
Q[:,0]=u[:,0]/np.linalg.norm(u[:,0])
for i in range(1,n):
u[:,i]=A[:,i]
for j in range(i):
u[:,i]-=(A[:,i]@ Q[:,j])*Q[:,j]
Q[:,i]=u[:,i]/np.linalg.norm(u[:,i])
R=np.zeros((n,m))
for i in range(n):
for j in range(i,m):
R[i,j]=A[:,j] @ Q[:,i]
print(Q)
print(R)
Thus the QR decomposition algorithm using the Gram-Schmidt process is written and verified the result.