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Juliette [100K]
3 years ago
13

You trained a binary classifier model which gives very high accuracy on thetraining data, but much lower accuracy on validation

data. The following maybe true:
a. This is an instance of overfitting.
b. This is an instance of underfitting.
c. The training was not well regularized.
d. The training and testing examples are sampled from different distributions.
Computers and Technology
1 answer:
kompoz [17]3 years ago
4 0

Answer:

a. This is an instance of overfitting.

Explanation:

In data modeling and machine learning practice, data modeling begins with model training whereby the training data is used to train and fit a prediction model. When a trained model performs well on training data and has low accuracy on the test data, then we say say the model is overfitting. This means that the model is memorizing rather Than learning and hence, model fits the data too well, hence, making the model unable to perform well on the test or validation set. A model which underfits will fail to perform well on both the training and validation set.

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What additive keeps engines clean by preventing contaminates and deposits from collecting on surfaces? a. Friction modifiers b.
White raven [17]

Answer is: Dispersants


Explanation:

Dispersants keep contaminants (e.g. soot) suspended in the oil to prevent them from coagulating. Anti-foam agents inhibit the production of air bubbles and foam in the oil which can cause a loss of lubrication, pitting, and corrosion where entrained air and combustion gases contact metal surfaces.

So that's why the answer is: Dispersants

7 0
3 years ago
Read 2 more answers
write a c++ program that reads from the user a positive integer (in a decimal representation), and prints its binary (base 2) re
Vesna [10]

Answer:

The program to this question can be described as follows:

Program:

#include <iostream> //defining header file

using namespace std;

int main() //defining main method

{

int x1,rem,i=1; //defining integer variable

long Num=0;// defining long variable

cout << "Input a decimal number: "; // print message

cin >> x1; //input value by user

while (x1!=0) //loop for calculate binary number

{

//calculating binary value    

rem= x1%2;

x1=x1/2;

Num =Num +rem*i;//holding calculate value

i=i*10;

}

cout <<Num;//print value

return 0;

}

Output:

Input a decimal number: 76

1001100

Explanation:

In the above code, four variable "x1, rem, i, and Num" is declared, in which three "x1, rem, and i" is an integer variable, and one "Num" is a long variable.

  • In the x1 variable, we take input by the user and use the while loop to calculate its binary number.
  • In the loop, first, we check x1 variable value is not equal to 0, inside we calculate it binary number that store in long "Num" variable, after calculating its binary number the print method "cout" is used to prints its value.  
5 0
3 years ago
You are preparing to give a presentation at a client’s location using your mobile device and a large screen TV. You have success
Ray Of Light [21]

Answer:

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Explanation:

B should be wrong because the TV being connected to a different network segment still means that it is on the Wi-Fi network, it is just using a different switch or a repeater.

C should be wrong because the brightness of the TV does not have anything to do with being able to connect to the phone.

D should be wrong because in the question itself it says that "you tap the mirroring option on your device" which clearly means that the mobile device supports display mirroring.

The answer should be A, if the device and the TV are not on the same Wi-Fi network, than they simply can not connect and the mirroring can not be done.

I hope this answer helps.

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3 years ago
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Answer Choices:

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4 0
3 years ago
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Darina [25.2K]
ATX
microATX (smaller version of ATX)
mini-ITX (smaller version of microATX)

5 0
3 years ago
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