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zepelin [54]
1 year ago
8

identify the difficulties with the k-nearest neighbor algorithm. a. both a and b b. calculate the distance of the test case from

all training cases c. none of the above d. curse of dimensionality
Computers and Technology
1 answer:
Levart [38]1 year ago
7 0

The difficulties with the k-nearest neighbor algorithm is option c. none of the above.

<h3>What problems does the K-nearest Neighbor algorithm have?</h3>

An unlabelled point is given a label based on its proximity to all other nearby labelled points. This is how it works. Its main drawbacks are that picking the "right" value of K is challenging and that it is highly computationally inefficient.

Hence, The supervised machine learning technique known as the k-nearest neighbors (KNN) can be used to tackle classification and regression issues. It is simple to use and comprehend, but it has the important problem of becoming noticeably slower as the amount of data in use increases.

Learn more about algorithm from

brainly.com/question/13800096
#SPJ1

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3 years ago
Design a class named QuadraticEquation for a quadratic equation ax^2+bx+x=0. The class contains: **private data fields a, b, and
LenaWriter [7]

Answer:

<em>C++</em>

///////////////////////////////////////////////////////////////////////////////////////////

#include <iostream>

using namespace std;

//////////////////////////////////////////////////////////////////

class QuadraticEquation {

   int a, b, c;

   

public:

   QuadraticEquation(int a, int b, int c) {

       this->a = a;

       this->b = b;

       this->c = c;

   }

   ////////////////////////////////////////

   int getA() {

       return a;

   }

   

   int getB() {

       return b;

   }

   

   int getC() {

       return c;

   }

   ////////////////////////////////////////

   // returns the discriminant, which is b2-4ac

   int getDiscriminant() {

       return (b*2)-(4*a*c);

   }

   

   int getRoot1() {

       if (getDiscriminant() < 0)

           return 0;

       else {

           // Please specify how to calculate the two roots.

           return 1;

       }

   }

   

   int getRoot2() {

       if (getDiscriminant() < 0)

           return 0;

       else {

           // Please specify how to calculate the two roots.

           return -1;

       }

   }

};

//////////////////////////////////////////////////////////////////

int main() {

   return 0;

}

4 0
3 years ago
What are two software tools for bank account reconciliation?
AysviL [449]

Answer: cashbook and erp system

Explanation:

8 0
3 years ago
Read 2 more answers
Instructions Write a program that allows the user to enter the last names of five candidates in a local election and the number
KengaRu [80]

Here is code in java.

import java.util.*;

class Election

{ //main method

   public static void main(String args[]){

      // create an object of Scanner class to read input

      Scanner s = new Scanner(System.in);

      // string array to store name of candidates

       String name[] = new String[5];

       // int array to store vote count of candidates

       int v_count[] = new int[5];

       double p = 0;

       int i = 0, sum = 0, high =0, win = 0;

for(i = 0; i < 5;i++)

       {

          System.out.print("last name of Candidate " + (i+1) + ":");

          // read name of Candidate

          name[i] = s.next();

          System.out.print(" number of votes received: ");

          // read vote of Candidate

           v_count[i] =s.nextInt();

if(v_count[i] > high)

              {

                  // highest vote

                  high = v_count[i];

                  win = i;

              }

              // total vote count

           sum +=v_count[i];

       }

     // printing the output

      System.out.println("\nCandidate\tVotes Received\t% of TotalVotes\n");

       for(i = 0; i < 5;i++)

       {

           // % of vote of each Candidate

           p =(v_count[i]*100)/sum;

           // print the output

          System.out.println(name[i] + "\t\t" + v_count[i] + "\t\t\t" +p);

       }

       // print the total votes

      System.out.println("\nTotal Votes:\t" + sum);

      // print the Winner of the Election

       System.out.println("Winner of the Election is: " + name[win]);

   }

}

Explanation:

Create a string array "name" to store the name of candidates.Create Integer array "v_count" to store votes os each candidates.Calculate total votes of all candidates and find the highest vote amongst all candidate and print it.Find % of votes received by each candidate.Print these stats.

Output:

last name of Candidate 1:patel

number of votes received: 54

last name of Candidate 2:singh

number of votes received: 76

last name of Candidate 3:roy

number of votes received: 33

last name of Candidate 4:yadav

number of votes received: 98

last name of Candidate 5:sharma

number of votes received: 50

Candidate       Votes Received  % of TotalVotes

patel           54                      17.0

singh           76                      24.0

roy             33                      10.0

yadav           98                      31.0

sharma          50                      16.0

Total Votes:  311

Winner of the Election is: yadav

8 0
3 years ago
A mobile device you are troubleshooting is experiencing a sharp decrease in performance after an hour of operation. The user pow
Anna71 [15]

Answer:

Close or disable all unused running apps.

Explanation:

Closing programs running in the background on your computer or mobile device helps to free up system resources for your other programs. These problems can be resolved where your system is running slowly or two programs are trying to use the same device hence causing the device or system to drag.

5 0
3 years ago
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