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.

Answers

Answer 1

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.


Related Questions

For each compound below, identify any polar covalent bonds and indicate the direction of the dipole moment using the symbols δ +and δ-.
(a) HBr
(b) HCI
(c) H2O
(d) CH40

Answers

Answer:

H-Br bond is polar, hydrogen is partly positive and bromine is partly negative

H-Cl bond is polar, hydrogen is partly positive and bromine is partly negative

O-H bond in water is polar, hydrogen is partly positive and oxygen is partly negative

C-O bond in CH40 is polar, carbon is partly positive and oxygen is partly negative

Explanation:

A molecule possess a dipole moment when there is a large difference in electro negativity between two bonding atoms in the molecule.

The presence of dipole moments introduces polarity to the molecule. In all the molecules listed in the answer, the shared electron pair of the bond is closer to the more electronegative atom causing it to be partially negative while the less electronegative atom in the bond is partially positive.

Consider the following class definitions.
public class Apple

{
public void printColor()
{
System.out.print("Red");
}
}
public class GrannySmith extends Apple
{
public void printColor()
{
System.out.print("Green");
}
}
public class Jonagold extends Apple
{
// no methods defined
}

The following statement appears in a method in another class.
someApple.printColor();
Under which of the following conditions will the statement print "Red" ?
I. When someApple is an object of type Apple
II. When someApple is an object of type GrannySmith
III. When someApple is an object of type Jonagold


a. I only
b. II only
c. I and III only
d. II and III only
e. I, II, and III

Answers

i pretty sure it’s d tell me if I’m wrong

outline 3 computer system problem that could harm people and propose the way avoid the problem​

Answers

Answer:

outline 3 computer system problem that could harm people and propose the way avoid the problem are :_

Computer Won't Start. A computer that suddenly shuts off or has difficulty starting up could have a failing power supply. Abnormally Functioning Operating System or Software. Slow Internet.

You would like to upgrade the processor in your system to a 64-bit processor. Which of the components will you most likely need to upgrade as well to take full advantage of the new processor

Answers

Answer: Operating system

Explanation:

The components that will be required to upgrade as well to take full advantage of the new processor is the Operating system.

The operating system manages the software resources and the computer hardware, through the provision of common services for the computer programs. It simply supports the basic function of the computer like task scheduling

Which statement describes what happens when a user configures No Automatic Filtering in Junk Mail Options?
O No messages will ever be blocked from the user's mailbox.
Messages can still be blocked at the server level.
O Messages cannot be blocked at the network firewall.
O Most obvious spam messages will still reach the client computer,
PLEASE ANSWER CORRECTLY WILL GIVE 15pts

Answers

No messages will ever be blocked from the users mailbox. Messages can still be blacked at the sever level

Any action that causes harm to your computer is called a
1.Security harm
2.Security damage
3.Security risk
4.Security crime​

Answers

Answer:

Security risk.

Explanation:

It is making your computer vulnerable to attacks and less secure.

Any action that causes harm to your computer is called a security risk. That is option 3.

What is security risk in computer?

A computer is an electronic device that can be used to prepare, process and store data.

Security risk in computer is any action undertaken by a computer user that can lead to the loss of data or damage to hardware or software of the computer.

Some of the security risks that predisposes a computer to damage include the following:

unpatched software,

misconfigured software or hardware, and

bad habits such as keeping fluid close to the computer.

Therefore, any action that causes harm to your computer is called a security risk.

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Which XXX declares a student's name. public class Student { XXX private double myGPA; private int myID; public int getID() { return myID; } } Group of answer choices String myName; public String myName; private myName; private String myName;

Answers

Question:

Which XXX declares a student's name.

public class Student {

   XXX

   private double myGPA;  

   private int myID;

   public int getID() {

        return myID;

   }

}

Group of answer choices

a. String myName;

b. public String myName;

c. private myName;

d. private String myName;

Answer:

private String myName;

Explanation:

To declare a student's name, the following should be noted.

i. The name of the student is of type String

ii. Since all of the instance variables (myGPA and myID) have a private access modifier, then myName (which is the variable name used to declare the student's name) should be no exception. In other words, the student's name should also have a private access.

Therefore, XXX which declares a student's name should be written as

private String myName;

Option (a) would have been a correct option if it had the private keyword

Option (b) is not the correct option because it has a public access rather than a private access.

Option (c) is not a valid syntax since, although it has a private access, the data type of the variable myName is not specified.

Option (d) is the correct option.

Please Help Me!!!!!!!!!!!!!


A commercial photographer would most likely be employed by which of the following?

A business
A magazine
A travel agency
All the above

Answers

Explanation:

a magazine cause it helps put out commercial

01 Describe all the possible component of a chart​

Answers

Answer:

Explanation:

1) Chart area: This is the area where the chart is inserted. 2) Data series: This comprises of the various series which are present in a chart i.e., the row and column of numbers present. 3) Axes: There are two axes present in a chart. ... 4)Plot area: The main area of the chart is the plot area

1) It is possible to email a document
directly from the Word application.
O FALSE
O TRUE

Answers

Answer:

True

Explanation:

Select all that apply to Enums: Group of answer choices While mainly a readability feature, we can technically use Enum to do things like spoof a boolean type in C allowing us some level of functionality Enums let us build a series of any kind of constant Enums allow us to print names for integers instead of numbers Enums are great for representing states and other common constants like colors Enums let us specifically value each constant we create Flag question: Question 59 Question 59

Answers

Answer:

-- While mainly a readability feature, we can technically use Enum to do things like spoof a Boolean type in C allowing us some level of functionality.

-- Enums are great for representing states and other common constants like colors.

-- Enums let us specifically value each constant we create.

Explanation:

Enums is a part of a programming language which helps a developer or a programmer to defined a set of the named constants. Using the enums will help in making it easier to document the intent and also to create set of distinct cases.

Option 1 is applicable as in the Boolean there are only TRUE and FALSE values. By using enum one can add more state like that of being difficult or normal or easy.

Option 4 is applicable because enums are used to represent various states and also other constants.

Option 5 is also applicable they allow the developer to create each value constant.

LAB: Warm up: Drawing a right triangle This program will output a right triangle based on user specified height triangle_height and symbol triangle_char. (1) The given program outputs a fixed-height triangle using a character. Modify the given program to output a right triangle that instead uses the user-specified triangle_char character. (1 pt) (2) Modify the program to use a loop to output a right triangle of height triangle_height. The first line will have one user-specified character, such as % or* Each subsequent line will have one additional user-specified character until the number in the triangle's base reaches triangle_height. Output a space after each user-specified character, including a line's last user-specified character. (2 pts) Example output for triangle_char = % and triangle_height = 5: Enter a character: Enter triangle height: 5 273334.1408726 LAB ACTIVITY 16.6.1: LAB: Warm up: Drawing a right triangle 0/3 main.py Load default template... 1 triangle_char - input('Enter a character:\n') 2 triangle_height = int(input('Enter triangle height:\n')) 3 print('') 4 5 print ('*') 6 print ("**') 7 print ("***') 8

Answers

Answer:

The modified program in Python is as follows:

triangle_char = input('Enter a character:\n')

triangle_height = int(input('Enter triangle height:\n'))  

for i in range(triangle_height):

   print(triangle_char * (i+1))

Explanation:

This gets the character from the user

triangle_char = input('Enter a character:\n')

This gets the height of the triangle from the user

triangle_height = int(input('Enter triangle height:\n'))  

This iterates through the height

for i in range(triangle_height):

This prints extra characters up to the height of the triangle

   print(triangle_char * (i+1))

Here's the modified program that incorporates the requested changes:

python

Copy code

triangle_char = input('Enter a character:\n')

triangle_height = int(input('Enter triangle height:\n'))

print('')

for i in range(1, triangle_height + 1):

   line = triangle_char * i + ' ' * (triangle_height - i)

   print(line)

This program uses a loop to iterate from 1 to triangle_height. In each iteration, it creates a line by concatenating triangle_char repeated i times with spaces (' ') repeated (triangle_height - i) times. The resulting line is then printed.

For example, if the user enters % as the character and 5 as the height, the output will be to make sure to maintain the indentation properly in your code for it to work correctly.

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When computer boots which I pont program starts first? O Operating System O Metaphor System O Basic System O Computer System​

Answers

The answer is Operating system

It has been a hectic day for the cyber security team. The team is struggling to decide to which incident to devote the most resources. You are estimating the amount of time taken to recover from each incident Which scope factor are you considering?

Answers

Answer:

This definitely is a project management question. The scope factors to be considered are:

Varying Resource Levels Time FactorCompliance with Regulatory Factors Requirements of Stakeholders Quality of Management RisksLegal Factors

Explanation:

Any element or factor that can advantageously advance a project or negatively impact it is usually referred to as Project Scope Factor.

It is considered a desirable or nice-to-have ability to be able to spot these factors to the end that the positive ones are enhanced whilst negative ones are mitigated.

Failure, for instance, to timeously and properly identify factors that can negatively impact a project is most likely to result in a negative outcome.

Cheers

A reflective cross-site scripting attack (like the one in this lab) is a __________ attack in which all input shows output on the user’s/attacker’s screen and does not modify data stored on the server.

Answers

Answer:

" Non-persistent" is the right response.

Explanation:

A cross-site category of screenplay whereby harmful material would have to include a transaction to have been transmitted to that same web application or user's device is a Non-persistent attack.Developers can upload profiles with publicly available information via social media platforms or virtual communication or interaction.

what is a microscope ​

Answers

Answer:

an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times

Answer:

A microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eyes.

(CO 4 and 5) Create a program that will read in a list of test scores from the user and add them to a list. Ask the user in between each score if they want to continue (y/n). Display all of the scores entered and the total score at the end. Using the code below, put the code in the proper order Sample output: Welcome to the Test Score Program Add score: 88.45 Do you want to continue

Answers

Answer and Explanation:

Using Javascript:

function AddScores(){

Window.alert("Welcome to the Test Score Program");

var ScoreList= new Array();

ScoreList.push(Prompt("Add Score"));

var WhatNext= Confirm("do you want to continue?");

If(WhatNext===true) {

do{

ScoreList.push(Prompt("Add Score"));

}

While(

Confirm("do you want to continue?")===true;);

}

Alert(ScoreList);

Alert(ScoreList.reduce(function(a,b){return a +b};,0);)

}

AddScores();

From the above code in javascript programming language, we have created a list ScoreList and added elements to it using push method of the array object and a do...while loop that checks the condition and then adds the user's input to the array. We then alerted the array to the screen and then summed up the array elements and also alerted to the screen.

What are the basic characteristics of the linear structure in data structure

Answers

Explanation:

A Linear data structure have data elements arranged in sequential manner and each member element is connected to its previous and next element. This connection helps to traverse a linear data structure in a single level and in single run. Such data structures are easy to implement as computer memory is also sequential.

NO LINKS
Write a C++ program to accept a 5 digit integer and to validate the input based on the following rules.

Rules

1) The input number is divisible by 2. 2) The sum of the first two digits is less than last two digits. if the input number satisfies all the rules, the system prints valid and invalid, otherwise,

Example 1:

Enter a value: 11222

Output: Input number is valid

Example 2:

Enter a value: 1234

Output: Input number is invalid​

Answers

Answer:

#include <iostream>

#include <string>

#include <regex>

using namespace std;

int main()

{

   cout << "Enter a 5-digit number: ";

   string number;

   cin >> number;

   bool valid = regex_search(number, regex("^\\d{4}[02468]$"));

   if (valid) {

       valid = stoi(number.substr(0, 1)) + stoi(number.substr(1, 1))  

           < stoi(number.substr(3, 1)) + stoi(number.substr(4, 1));

   }

   cout << number << (valid ? " is valid" : " is invalid");

}

Explanation:

Regular expressions can do all of your checking except for the sum of digits check. The checks are i.m.o. easiest if you don't treat the input as a number, but as a string with digits in it.

The regex means:

^ start of string

\d{4} exactly 4 digits

[02468] one of 0, 2, 4, 6 or 8 (this is what makes it even)

$ end of string

Which of the following statement is true? Single choice. (2 Points) Views are virtual tables that are compiled at run time All of the Mentioned Views could be looked as an additional layer on the table which enables us to protect intricate or sensitive data based upon our needs Creating views can improve query response time

Answers

Answer:

All of the mentioned views could be looked as an additional layer in the table which enables us to protect intricate or sensitive data based upon our needs.

Explanation:

View is a virtual table which executed a pre compiled query. It is a table in which selective portion of the data can be seen from one or more tables. Queries are not allowed in indexed views and adding column is not possible. Views can be looked as an additional layer in the virtual table which protects sensitive data.

4. All of the following statements are true EXCEPT one. Which
statement is NOT true?
Select the best option.
Communication occurs between senders and receivers within a context by messages sent
through visual and auditory channels.
Communication includes both the verbal and nonverbal messages sent and received.
The goal of effective communication is mutual understanding.
You can improve your communication by improving your understanding of yourself, others,
and the context of the communication.
When you are listening to another person speak, you can avoid sending any messages by not
speaking and not making eye contact.

Answers

Answer:

D

Explanation:

Communication are happen when 2 people are response each other

It is not true that when you are listening to another person speak, you can avoid sending any messages by not speaking and not making eye contact. The correct option is 4.

What is communication?

The process of communicating information, concepts, ideas, or sentiments between two or more people through a variety of means and channels, including verbal and nonverbal communication, is referred to as communication.

It is a myth that you may avoid transmitting any messages when you are listening to someone else speak by remaining silent and avoiding eye contact.

Your body language and nonverbal communication, such as your facial expressions and eye contact, can still convey information to the speaker even if you are not replying verbally or establishing eye contact.

Hence, even if a message is unintended or nonverbal, all types of communication entail sending and receiving messages.

Thus, the correct option is 4.

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Your question seems incomplete, the probable complete question is:

All of the following statements are true EXCEPT one. Which

statement is NOT true?

Select the best option.

Communication occurs between senders and receivers within a context by messages sent through visual and auditory channels.Communication includes both the verbal and nonverbal messages sent and received. The goal of effective communication is mutual understanding.You can improve your communication by improving your understanding of yourself, others, and the context of the communication.When you are listening to another person speak, you can avoid sending any messages by not speaking and not making eye contact.

In C complete the following:

void printValues ( unsigned char *ptr, int count) // count is no of cells
{
print all values pointed by ptr. //complete this part
}
int main ( )
{

unsigned char data[ ] = { 9, 8, 7, 5, 3, 2, 1} ;
call the printValues function passing the array data //complete this part
}

Answers

Answer:

#include <stdio.h>

void printValues ( unsigned char *ptr, int count) // count is no of cells

{

 for(int i=0; i<count; i++) {

   printf("%d ", ptr[i]);

 }

}

int main ( )

{

 unsigned char data[ ] = { 9, 8, 7, 5, 3, 2, 1} ;

 printValues( data, sizeof(data)/sizeof(data[0]) );

}

Explanation:

Remember that the sizeof() mechanism fails if a pointer to the data is passed to a function. That's why the count variable is needed in the first place.

please help me I mark you brilliant thanks​

Answers

Answer:

B attaches to C, and C goes into A. (Sequence: A, then insert C into A, then insert B into C.)

Explanation:

You can quite literally get the answer from treating it like a puzzle. There is only 1 solution you can have, and they are marked with shapes. This is also the correct solution to clear the text box with button2 on click.

In cell B13, create a formula without a function using absolute references that subtracts the values of cells B5 and
B7 from cell B6 and then multiples the result by cell B8. please help with excel!! I'm so lost

Answers

Answer:

The formula in Excel is:

=($B$6 - $B$5 - $B$7)* $B$8

Explanation:

Required

Use of absolute reference

To reference a cell using absolute reference, we have to include that $ sign. i.e. cell B5 will be written as: $B$5; B6 as $B$6; B7 as $B$7; and B8 as $B$8;

Having explained that, the formula in cell B13 is:

=($B$6 - $B$5 - $B$7)* $B$8

Dan frequently organizes meetings and would like to automate the handling of the meeting responses. What should he
do to automatically move those responses into a subfolder?
O Configure an automatic reply.
O Configure the default meeting request options.
O Configure a Meeting Response Rule.
O Nothing, Dan must respond individually.

Answers

Answer:

Configure an automatic reply.

Explanation:

Dan's best option would be to configure an automatic reply. This reply will instantly be sent to any individual that messages Dan requesting a meeting. Once configured, Dan will no longer need to manually respond to each one of the messages and it will instead be handled automatically. These messages will also be automatically moved to the outbox where the messages that have been sent usually go.

Answer:

C

Explanation:

As a basic user of SAP Business One, which feature of the application do you like most?

Answers

Answer:

I like the software most because it is completely for the sales department. I am very satisfied with what this software provides since I work as a sales specialist.

Explanation:

As an internal auditor, I first have to check and make sure the business is going through all reports and operations and that SAP Business One has helped me a lot with reporting features. I'm a huge fan of SAP Business One. And how this software is incredibly fully integrated when an accountancy provider creates a new customer name or adds a new item in every module, and the non-duplicate data feature secures the master data from any duplicate item.

Intuitive sales quotation and sales order functions help salespeople to develop deals that they can conclude. The mobile app adds to the software's usefulness fantastically.

In general, the system has a good monetary value. I would recommend it to everyone involved in the decision-making process and it is my favorite.

Suppose that in a 00-11 knapsack problem, the order of the items when sorted by increasing weight is the same as their order when sorted by decreasing value. Give an efficient algorithm to find an optimal solution to this variant of the knapsack problem, and argue that your algorithm is correct.

Answers

Answer:

Following are the response to the given question:

Explanation:

The glamorous objective is to examine the items (as being the most valuable and "cheapest" items are chosen) while no item is selectable - in other words, the loading can be reached.

Assume that such a strategy also isn't optimum, this is that there is the set of items not including one of the selfish strategy items (say, i-th item), but instead a heavy, less valuable item j, with j > i and is optimal.

As [tex]W_i < w_j[/tex], the i-th item may be substituted by the j-th item, as well as the overall load is still sustainable. Moreover, because [tex]v_i>v_j[/tex] and this strategy is better, our total profit has dropped. Contradiction.

The following method is intended to return true if and only if the parameter val is a multiple of 4 but is not a multiple of 100 unless it is also a multiple of 400. The method does not always work correctly public boolean isLeapYear(int val) if ((val 4) == 0) return true; else return (val & 400) == 0; Which of the following method calls will return an incorrect response?
A .isLeapYear (1900)
B. isLeapYear (1984)
C. isLeapYear (2000)
D. isLeapYear (2001)
E. isLeapYear (2010)

Answers

Answer:

.isLeapYear (1900) will return an incorrect response

Explanation:

Given

The above method

Required

Which method call will give an incorrect response

(a) will return an incorrect response because 1900 is not a leap year.

When a year is divisible by 4, there are further checks to do before such year can be confirmed to be a leap year or not.

Since the method only checks for divisibility of 4, then it will return an incorrect response for years (e.g. 1900) that will pass the first check but will eventually fail further checks.

Hence, (a) answers the question;

When performing the ipconfig command, what does the following output line depict if found in the tunnel adapter settings?
IPv6 Address: 2001:db8:0:10:0:efe:192.168.0.4
a. IPv6 is disabled.
b. The addresses will use the same subnet mask.
c. The network is not setup to use both IPv4 and IPv6.
d. IPv4 Address 192.168.0.4 is associated with the global IPv6 address 2001:db8:0:10:0:efe

Answers

Answer:

d. IPv4 Address 192.168.0.4 is associated with the globe IPv6 address 2001:db8:0:10:0:efe

Explanation:

The adapter setting will be associated with the global IP address. When Ipconfig command is operate the IP address finds the relevant domain and then address will use a different subnet. The network will use both IPv4 and IPv6 subnets in order to execute the command.

In the tunnel adapter settings, when performing the ipconfig command, the given output line depicts: D. IPv4 Address 192.168.0.4 is associated with the global IPv6 address 2001:db8:0:10:0:efe.

What is a tunnel adapter?

A tunnel adapter can be defined as a virtual interface which is designed and developed to encapsulate packets as a form of tunnel or virtual private network (VPN) protocol while sending them over another network interface.

In Computer networking, an output line of "IPv6 Address: 2001:db8:0:10:0:efe:192.168.0.4" in the tunnel adapter settings simply means that an IPv4 Address 192.168.0.4 is associated with the global IPv6 address 2001:db8:0:10:0:efe.

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Smartphones are more likely to be used than laptop computers for everyday ICT use.
Describe three advantages of using a smartphone rather than a laptop computer.

Answers

Answer:

it's small amd you can carry it everywhere

easy to use

long lasting battery

Explanation:

hope the answers are right:)

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