Data Science - Binary Disorder Confusion matrix of binary classification. For binary classifications, a confusion matrix is a

Question

I didnt get i have tried it like this
y_true = [int(x) for x in input().split()]
y_pred = [int(x) for x in input().split()]

from sklearn.metrics import confusion_matrix
from numpy as np

y_pred = np.array(y_pred).reshape(-1 , 1)

print(confusion_matrix(y_true, y_pred))

Answer 1

y_true = [int(x) for x in input().split()]
y_pred = [int(x) for x in input().split()]

import numpy as np
y_true = np.array(y_true)
y_pred= np.array(y_pred)

tp=sum(y_true & y_pred)
fp=sum(~y_true & y_pred)
fn=sum(y_true & ~y_pred)
tn=len(y_true)-tp-fp-fn

print(np.array([[tp,fp],[fn,tn]],dtype='f'))

Answer 2

import numpy as np
from sklearn.metrics import confusion_matrix

y_true = [int(x) for x in input().split()]
y_pred = [int(x) for x in input().split()]

# numpy array
y_true = np.array(y_true)
y_pred = np.array(y_pred)

confusion = confusion_matrix(y_pred, y_true, labels=[1, 0])

print(np.array(confusion, dtype="f"))

Answer 3

import numpy as np
from sklearn.metrics import confusion_matrix

y_true = [int(x) for x in input().split()]
y_pred = [int(x) for x in input().split()]

X = []
TL = float(0)
TR = float(0)
BL = float(0)
BR = float(0)

for x, y in zip(y_true, y_pred):
if x == 1:
if y == 1:
TL += 1
else:
BL += 1

elif x == 0:
if y == 1:
TR += 1
else:
BR += 1

X.append(TL)
X.append(TR)
X.append(BL)
X.append(BR)

Y = np.array(X)
Y = Y.reshape(2, 2)

print(Y)

I've tried this. And it works for all the cases..

Answer 4

import numpy as np
from sklearn.metrics import confusion_matrix

y_true = [int(x) for x in input().split()]
y_pred = [int(x) for x in input().split()]

X = []
TL = float(0)
TR = float(0)
BL = float(0)
BR = float(0)

for x, y in zip(y_true, y_pred):
if x == 1:
if y == 1:
TL += 1
else:
BL += 1

elif x == 0:
if y == 1:
TR += 1
else:
BR += 1

X.append(TL)
X.append(TR)
X.append(BL)
X.append(BR)

Y = np.array(X)
Y = Y.reshape(2, 2)

print(Y)

Answer 5

TEWODROS WUBETE DESTA what is purpose of confusion_matrix here?

Answer 6

import numpy as np

y_true = [int(x) for x in input().split()]
y_pred = [int(x) for x in input().split()]

conf = list(zip(y_true, y_pred))

def confTuple(tupl, tr,pr):
res = len([t[0] for t in tupl if t[0] == tr and t[1]==pr])
return res

tp = confTuple(conf, 1,1)
fp = confTuple(conf, 0,1)
fn = confTuple(conf, 1,0)
tn = confTuple(conf, 0,0)

print(np.array([[tp,fp],[fn, tn]])/1)