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liq [111]
3 years ago
15

What are some of the advantages of using the F measure (weighted harmonic mean) over using the Precision & Recall when evalu

ating an IR system performance? (list at least two advantages)
Computers and Technology
1 answer:
Art [367]3 years ago
6 0

Answer and Explanation:

Some of the advantages of using the F measure (weighted harmonic mean) over using the Precision & Recall when evaluating an IR system performance are as follows-

  • Precision quantifies the number of positive class predictions that actually belong to the positive class.
  • Recall quantifies the number of positive class predictions made out of all positive examples in the dataset.
  • F-Measure provides a single score that balances both the concerns of precision and recall in one number.
  • A measure that combines precision and recall is the harmonic mean of precision and recall, the traditional F-measure or balanced F-score:

F=2((precision.recall)/(precision+recall))

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Answer:

The following code is written in C programming language:

#include <stdio.h>     //header file

 

int main()       //main method

{

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    // print message

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   n = 100;      //initialize value in variable "n"    

   while (n <= 999)      //set while loop

   {

       digit1 = n - ((n / 10) * 10);

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       digit3 = (n / 100) - ((n / 1000) * 10);

       t = (digit1 * digit1 * digit1) + (digit2 * digit2 * digit2) + (digit3 * digit3 * digit3);

       if (t == n)      //set if statement

       {

           printf("\n Special integer number is: %d", t);     //print an output

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       n++;

   }

}

Output:

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Special integer number is: 370

Special integer number is: 371

Special integer number is: 407

Explanation:

Here, we set the header file "stdio.h".

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Then, we set the while loop which starts from 100 and stops at 999 and if the condition is true than code inside the loop is execute either loop is terminated.

Then, we set the if statement and pass the condition, if the condition is true the output would be print either if the condition is false the if statement is terminated.

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