You have been assigned to design and implement a data structure that will be used to store and retrieve student records. The data structure should be able to store the following information for each student: name, ID number, major, and GPA. You are required to use array, linked list, and stack in the implementation of this data structure using python.

1. Design the Data Structure:
a. Decide on the format for storing student records.
b. Choose the data types for each field (name, ID number, major, and GPA).
c. Determine the operations that the data structure should support (insert, delete, search).
d. Choose the appropriate data structure for each operation (array, linked list, or stack).
e. Create a diagram to show how the different data structures will be used together.

2. Implement the Data Structure:
a. Implement each data structure to store the students records.
b. Write functions to insert, delete, and search student records.

3. Test the Implementation:
a. Write a test function to insert several student records into the data structure.
b. Write a test function to delete some of the records.
c. Write a test function to search for a specific record.
d. Verify that the data structure is working correctly by running the test functions.​

Answers

Answer 1

Answer:

1.

Design the Data Structure:

a. Format for storing student records:

We can store student records in a table format, where each row represents a student record, and the columns represent the different attributes, i.e., name, ID number, major, and GPA.

b. Data types for each field:

For each field, we can use the following data types:

Name: stringID number: integerMajor: stringGPA: float

c. Operations that the data structure should support:

Insert a new student recordDelete an existing student recordSearch for a specific student recordd. Appropriate data structure for each operation:Array: An array can be used to store the student records in a contiguous block of memory. We can use an array to store the student records when we know the maximum number of records that we will store in advance.Linked List: A linked list can be used to store student records in a non-contiguous block of memory. We can use a linked list to store the student records when we don't know the maximum number of records that we will store in advance.Stack: A stack can be used to store the student records when we want to retrieve the most recently added record first.

e. Diagram showing how the different data structures will be used together:

See Attachment

Implement the Data Structure:

a. Implementation of each data structure to store the student records:

# Array implementation

MAX_RECORDS = 100

students = [None] * MAX_RECORDS

# Linked List implementation

class StudentNode:

   def __init__(self, name, id_num, major, gpa):

       self.name = name

       self.id_num = id_num

       self.major = major

       self.gpa = gpa

       self.next = None

class StudentLinkedList:

   def __init__(self):

       self.head = None

   def insert(self, name, id_num, major, gpa):

       new_node = StudentNode(name, id_num, major, gpa)

       if self.head is None:

           self.head = new_node

       else:

           curr = self.head

           while curr.next is not None:

               curr = curr.next

           curr.next = new_node

# Stack implementation

class StudentStack:

   def __init__(self):

       self.stack = []

   def push(self, name, id_num, major, gpa):

       self.stack.append((name, id_num, major, gpa))

   def pop(self):

       if len(self.stack) > 0:

           return self.stack.pop()

       else:

           return None

b. Functions to insert, delete, and search student records:

# Insert a new student record

def insert_record(name, id_num, major, gpa):

   # Insert into array

   for i in range(len(students)):

       if students[i] is None:

           students[i] = (name, id_num, major, gpa)

           break

   # Insert into linked list

   student_list.insert(name, id_num, major, gpa)

   # Insert into stack

   student_stack.push(name, id_num, major, gpa)

# Delete an existing student record

def delete_record(id_num):

   # Delete from array

   for i in range(len(students)):

       if students[i] is not None

You Have Been Assigned To Design And Implement A Data Structure That Will Be Used To Store And Retrieve
Answer 2

1)Design the Data Structure:

We can store student records in a table format, where each row represents a student record, and the columns represent the different attributes, i.e., name, ID number, major, and GPA. Other part is discussed below:

What is an Array?

An array can be used to store the student records in a contiguous block of memory. We can use an array to store the student records when we know the maximum number of records that we will store in advance.

Linked List: A linked list can be used to store student records in a non-contiguous block of memory. We can use a linked list to store the student records when we don't know the maximum number of records that we will store in advance.

Stack: A stack can be used to store the student records when we want to retrieve the most recently added record first. Diagram showing how the different data structures will be used together:

Implement the Data Structure:

a. Implementation of each data structure to store the student records:

# Array implementation

MAX_RECORDS = 100

students = [None] * MAX_RECORDS

# Linked List implementation

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Related Questions

True or , false primary sources may contain data material. We now know is an accurate including personal beliefs, and bias is not intended to be openly published.

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The answer is True.

You are writing a program that uses these modules. An error occurs when you try to make the cat sprite say "Hello." Which module needs to be edited?

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Answer:

D. Talk

Explanation:

It's probably an issue with the Talk module, since it is having trouble saying "Hello".

write algorithm to determine a student final grade and indicate whether it passing or failing the final grade is calculate as the average of four marks

Answers

This approach makes the assumption that the marks have already been entered and are being saved in a list or array. If not, you will need to provide input statements to collect the user's marks.

How do you determine whether a learner has passed or failed an algorithm?

Let's say the passing score in Microsoft Excel is 70. And the student's grades are a B4. Afterward, type the following formula in cell C4: =IF(B470,"FAIL","PASS"). Accordingly, insert the word FAIL in cell B4 if the score in B4 is less than 70, otherwise/otherwise enter the wordPASS.

1. Set sum to zero

2. FOR i = 0 to 3

3. input symbols [i]

4. SET marks[i] = marks + sum

5. END WITH

SET average = total / 4.

7. Set the final grade to the average.

PRINT "Passing" + final_grade IF final_grade >= 50.

10. ELSE

11. PRINT "Failing" followed by the grade

12. END IF

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A collection of information which is accessed through the internet is called

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Answer:

The collection of information, which is accessed through the internet is known as web pages.

pls like and mark as brainliest if it helps!

What is the limit of slides in PowerPoint?

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Answer:

There is no slide limit in PowerPoint.

develop an algorithm to add three numbers and convert it into flowcharts​

Answers

Algorithm to add three numbers:

StartInitialize variables num1, num2, num3, sumRead num1, num2, and num3 from the userAdd num1, num2, and num3 and store the result in sumDisplay the sumStop

What is the algorithm?

Flowchart:

sql

Copy code

      +------------+

      |   Start    |

      +------------+

              |

              V

      +------------------+

      | Initialize variables |

      | num1, num2, num3, sum |

      +------------------+

              |

              V

      +-------------------+

      |   Read num1, num2, and num3 |

      +-------------------+

              |

              V

      +------------------+

      |   Add num1, num2, and num3 |

      |    and store in sum |

      +------------------+

              |

              V

      +-------------+

      |  Display sum |

      +-------------+

              |

              V

      +---------+

      |   Stop  |

      +---------+

Therefore, Note: The above flowchart is a simple representation of the algorithm and can be modified as per individual needs.

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Can anyone help me answer this question?
Each student should research CSS properties and syntax and include whichever properties that work with their project.

Answers

Some CSS properties that could be considered in a project are font, color, height, and width, and background. Some CSS syntaxes include the value, the property, and the selector.

How to use CSS

CSS is also known as the cascading style sheets. It can be used to add some color to the code generated from HTML.

When using the CSS syntax for your text, you should consider properties such as font, color, height, and width. it is also recommended to consider the syntax which ensures that the styling is in order. The three mentioned above are the main syntaxes.

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Bit rate is a measure of how many bits of data are transmitted per second. Compared to videos with a higher bit rate, the same videos with a lower bit rate would most likely have
a 3D effect.
blocky, pixilated motion.
a larger file size.
a smoother flow of motion.

Answers

A lower bit rate means that fewer bits of data are transmitted per second, resulting in a lower quality video

What does this mean?

A decreased bit rate signifies that a smaller quantity of bits are sent each second, leading to a lower-caliber video. Videos with a minor bit rate usually feature choppy, pixelated motion garnered due to the compression of the footage.

This compression detracts from the amount of information transported, causing a decrease in detail and definition. Alternatively, videos possessing an advanced bit rate would encompass larger documents and a more continuous succession of motion, given that more data is disseminated per second - thereby making for a higher quality video. The increased bit rate enables for increased clarity as well as improved resolution to be persisted within the clip.

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5. a. Suppose a shared-memory system uses snooping cache coherence and write-back caches. Also suppose that core 0 has the variable x in its cache, and it executes the assignment x = 5. Finally suppose that core 1 doesn’t have x in its cache, and after core 0’s update to x, core 1 tries to execute y = x. What value will be assigned to y? Why? b. Suppose that the shared-memory system in the previous part uses a directory-based protocol. What value will be assigned to y? Why? c. Can you suggest how any problems you found in the first two parts might be solved?

Answers

a. The value assigned to y will be 5 because core 1 will snoop and invalidate its own cache copy of x, then fetch the updated value from core 0's cache.

What is the value for y?

b. The value assigned to y will also be 5 because the directory-based protocol will update the directory and broadcast the invalidation to core 1, causing it to fetch the updated value from core 0's cache.

c. To solve any potential problems, the system could use a different cache coherence protocol, such as write-through caches, or implement a locking mechanism to ensure exclusive access to shared variables.

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Write code to complete raise_to_power(). Note: This example is for practicing recursion; a non-recursive function, or using the built-in function math.pow(), would be more common.

Sample output with inputs: 4 2
4^2 = 16

***I need the solution to the code below in PYTHON***

def raise_to_power(base_val, exponent_val):
if exponent_val == 0:
result_val = 1
else:
result_val = base_val * ''' Your solution goes here '''

return result_val

user_base = int(input())
user_exponent = int(input())

print('{}^{} = {}'.format(user_base, user_exponent,
raise_to_power(user_base, user_exponent)))

Answers

Here's the completed code using recursion:

```python
def raise_to_power(base_val, exponent_val):
if exponent_val == 0:
result_val = 1
else:
result_val = base_val * raise_to_power(base_val, exponent_val - 1)
return result_val

user_base = int(input())
user_exponent = int(input())

print('{}^{} = {}'.format(user_base, user_exponent, raise_to_power(user_base, user_exponent)))
```

In the function `raise_to_power()`, we use recursion to multiply the `base_val` by itself `exponent_val` times, until `exponent_val` reaches 0. At that point, we return 1, because any number raised to the power of 0 equals 1.

When `exponent_val` is not 0, we use the formula `base_val * raise_to_power(base_val, exponent_val - 1)` to calculate the result recursively. This means we multiply the base value by the result of the function called with the same base and an exponent of `exponent_val - 1`.

Finally, we print out the result using string formatting.

Client applications used the SDP (sockets direct protocol) to initiate and run connections. Which layer of the OSI reference model uses this protocol?
A.
application layer
B.
network layer
C.
presentation layer
D.
session layer
E.
transport layer

Answers

Answer:The corect awnser is (E)

The SDP (Sockets Direct Protocol) is a networking protocol that is used to enable direct access to remote memory in a high-performance computing (HPC) environment. It is typically used by applications that require low-latency and high-bandwidth network communication.

The OSI (Open Systems Interconnection) reference model consists of seven layers: Application, Presentation, Session, Transport, Network, Data Link, and Physical.

The SDP protocol is typically used at the Transport layer (layer 4) of the OSI reference model, which is responsible for providing reliable, end-to-end data transport services between applications running on different hosts.

Therefore, the answer is E. Transport layer.

the correct answer is E

Rewrite the program below without using any "for loop"
start = input ( ' Enter the start : ' )
start = int (start)

end = input ( 'Enter the end: ' )
end = int (end)

increase = input ( 'Enter how much i is to be incremented in each iteration: ' )
increase = int (increase)

for i in range (start, end, increase) :
if i %2 == 0 :
print (i, 'is an even number.')
else :
print (i, ' is an odd number.')

Answers

Answer:

start = input('Enter the start: ')

start = int(start)

end = input('Enter the end: ')

end = int(end)

increase = input('Enter how much i is to be incremented in each iteration: ')

increase = int(increase)

i = start

while i < end:

   if i % 2 == 0:

       print(i, 'is an even number.')

   else:

       print(i, 'is an odd number.')

   i += increase

Explanation:

which of the following database objects ask a question of information in a database and then displays the result

Answers

Answer:

spreadsheet is the answer

Question 2 of 10
When gathering information, which of the following tasks might you need to
perform?
OA. Seek out ideas from others and share your own ideas
OB. Study objects, conduct tests, research written materials, and ask
questions
C. Fill out forms, follow procedures, and apply math and science
O D. Apply standards, such as measures of quality, beauty, usefulness,
or ethics

Answers

Answer:

OA is the answer for the question

machine learning naives bales + ensemble methods

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A well-liked optimization technique for building models in machine learning is stochastic gradient descent. A well-liked decision tree technique for classification issues in machine learning is ID3.

A well-liked optimization approach for training models in machine learning is stochastic gradient descent. As it changes the model weights based on a small batch of randomly chosen samples rather than the complete dataset, it is especially helpful for huge datasets. Implementing the SGD algorithm entails the following steps:

1. Initialize the model weights at random.

2. The dataset was divided into smaller groups.

3. Every batch:

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Which formula would be used to calculate a total?

Answers

Answer:

=Sum(number1. number2)

Answer:

total/sum(x , y) have a great day hope this helps :)

Explanation:

A severe thunderstorm knocked out the electric power to your company's datacenter,
causing everything to shut down. Explain with typical examples the impacts of the
[8 marks]
following aspect of information security
i. Integrity
ii. Availability

Answers

The impacts of the Integrity aspect of information security are:

Data corruptionData alteration

ii. Availability:

System downtimeDisruption to business processes

What is the thunderstorm  about?

Information security's integrity aspect involves data accuracy, completeness, and consistency. Thunderstorm-caused power loss can harm the datacenter's integrity.

Therefore, Examples of integrity impacts include data corruption from sudden power outages leading to inconsistencies or loss of data. A power outage can alter data in a datacenter, impacting its integrity and reliability, which can be detrimental if the data is sensitive or critical to the business.

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I need help with the following c program:

(1) Prompt the user for a string that contains two strings separated by a comma. (1 pt)

Examples of strings that can be accepted:
Jill, Allen
Jill , Allen
Jill,Allen

Ex:

Enter input string:
Jill, Allen


(2) Report an error if the input string does not contain a comma. Continue to prompt until a valid string is entered. Note: If the input contains a comma, then assume that the input also contains two strings. (2 pts)

Ex:

Enter input string:
Jill Allen
Error: No comma in string.

Enter input string:
Jill, Allen


(3) Extract the two words from the input string and remove any spaces. Store the strings in two separate variables and output the strings. (2 pts)

Ex:

Enter input string:
Jill, Allen
First word: Jill
Second word: Allen


(4) Using a loop, extend the program to handle multiple lines of input. Continue until the user enters q to quit. (2 pts)

Ex:

Enter input string:
Jill, Allen
First word: Jill
Second word: Allen

Enter input string:
Golden , Monkey
First word: Golden
Second word: Monkey

Enter input string:
Washington,DC
First word: Washington
Second word: DC

Enter input string:
q

Answers

Answer: ↓NEW↓

#include <stdio.h>

#include <string.h>

int main() {

   char input[100];

   char first[50];

   int i, len;

   while (1) {

       printf("Enter input string:\n");

       fgets(input, 100, stdin);

       len = strlen(input);

       if (len > 0 && input[len-1] == '\n') {

           input[len-1] = '\0';

       }

       if (strcmp(input, "q") == 0) {

           break;

       }

       int found_comma = 0;

       for (i = 0; i < len; i++) {

           if (input[i] == ',') {

               found_comma = 1;

               break;

           }

       }

       if (!found_comma) {

           printf("Error: No comma in string.\n");

           continue;

       }

       int j = 0;

       for (i = 0; i < len; i++) {

           if (input[i] == ' ') {

               continue;

           }

           if (input[i] == ',') {

               first[j] = '\0';

               break;

           }

           if (j < 50) {

               if (input[i] >= 'A' && input[i] <= 'Z') {

                   first[j] = input[i] - 'A' + 'a';

               } else {

                   first[j] = input[i];

               }

               j++;

           }

       }

       printf("First word: %s\n", first);

   }

   return 0;

}

Explanation:

↓OLD↓

#include <stdio.h>

#include <string.h>

int main() {

   char input[100];

   char first[50], second[50];

   int i, len;

   while (1) {

       printf("Enter input string:\n");

       fgets(input, 100, stdin);

       len = strlen(input);

       if (len > 0 && input[len-1] == '\n') { // remove newline character

           input[len-1] = '\0';

       }

       if (strcmp(input, "q") == 0) { // check if user wants to quit

           break;

       }

       // check if input contains a comma

       int found_comma = 0;

       for (i = 0; i < len; i++) {

           if (input[i] == ',') {

               found_comma = 1;

               break;

           }

       }

       if (!found_comma) { // report error if no comma is found

           printf("Error: No comma in string.\n");

           continue;

       }

       // extract first and second words and remove spaces

       int j = 0;

       for (i = 0; i < len; i++) {

           if (input[i] == ' ') {

               continue;

           }

           if (input[i] == ',') {

               first[j] = '\0';

               j = 0;

               continue;

           }

           if (j < 50) {

               if (input[i] >= 'A' && input[i] <= 'Z') { // convert to lowercase

                   first[j] = input[i] - 'A' + 'a';

               } else {

                   first[j] = input[i];

               }

               j++;

           }

       }

       second[j] = '\0';

       j = 0;

       for (i = 0; i < len; i++) {

           if (input[i] == ' ') {

               continue;

           }

           if (input[i] == ',') {

               j = 0;

               continue;

           }

           if (j < 50) {

               if (input[i] >= 'A' && input[i] <= 'Z') { // convert to lowercase

                   second[j] = input[i] - 'A' + 'a';

               } else {

                   second[j] = input[i];

               }

               j++;

           }

       }

       second[j] = '\0';

       printf("First word: %s\n", first);

       printf("Second word: %s\n", second);

   }

   return 0;

}

This program prompts the user for a string that contains two words separated by a comma, and then extracts and removes any spaces from the two words. It uses a loop to handle multiple lines of input, and exits when the user enters "q". Note that the program converts all uppercase letters to lowercase.

Which option is the best example of a computing device using abstraction to
connect images with social systems?
A. Social media platforms showing ads based on a user's shopping
behavior
OB. Video platforms suggesting similar videos based on a user's
viewing history
O C. Video platforms showing ads based on previously watched videos
OD. Social media platforms tagging individuals in photos
SUBMIT

Answers

The best example of a computing device using abstraction to connect images with social systems is option (D), social media platforms tagging individuals in photos.

What is the computing device?

Labeling people in photographs includes deliberation because the computing gadget ought to analyze the picture to distinguish the people display within the photo. This requires the utilize of computer vision calculations that can recognize faces and coordinate them to names in a social system's client database.

Moreover, the act of labeling people in photographs makes associations between social frameworks, as the labeled people are informed and can at that point connected with the photo and with each other.

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Two variables named largest and smallest are declared for you. Use these variables to store the largest and smallest of the three integer values. You must decide what other variables you will need and initialize them if appropriate. Your program should prompt the user to enter 3 integers. Write the rest of the program using assignment statements, if statements, or if else statements as appropriate. There are comments in the code that tell you where you should write your statements. The output statements are written for you. Execute the program by clicking the Run button at the bottom of the screen. Using the input of -50, 53, 78, your output should be: The largest value is 78 The smallest value is -50

Answers

Here's an example program in Python that stores the largest and smallest of three integer values entered by the user:

```python

# Declare variables for largest and smallest

largest = None

smallest = None

# Prompt user to enter three integers

num1 = int(input("Enter first integer: "))

num2 = int(input("Enter second integer: "))

num3 = int(input("Enter third integer: "))

# Determine largest number

if num1 >= num2 and num1 >= num3:

   largest = num1

elif num2 >= num1 and num2 >= num3:

   largest = num2

else:

   largest = num3

# Determine smallest number

if num1 <= num2 and num1 <= num3:

   smallest = num1

elif num2 <= num1 and num2 <= num3:

   smallest = num2

else:

   smallest = num3

# Output results

print("The largest value is", largest)

print("The smallest value is", smallest)

```

In this program, the variables `largest` and `smallest` are declared and initialized to `None`. Three additional variables `num1`, `num2`, and `num3` are declared and initialized with integer values entered by the user using the `input()` function and converted to integers using the `int()` function.

The program then uses a series of `if` and `elif` statements to determine the largest and smallest of the three numbers, based on their values. The `largest` and `smallest` variables are updated accordingly.

Finally, the program outputs the results using two `print()` statements.v

Using the Impress program, you can add multimedia files, including audio, image, and video files, to the presentation by using
the Insert menu.
the Media menu.
the Edit menu.
the Add menu.

Answers

Using the Impress program, you can add multimedia files, including audio, image, and video files, to the presentation by using "the Insert menu." (Option A)

What is an Impress Program?

Impress is a program used to create multimedia presentations. Clip art in 2D and 3D, special effects, animation, and high-impact drawing tools are all accessible.

Impress is a very exceptional tool for generating powerful multimedia presentations. With 2D and 3D clip art, special effects, animation, and high-impact drawing tools, your presentations will stand out.

The primary window of Impress is divided into three sections: the Slides pane, the Workspace, and the Sidebar. The Title Bar, Menu, Toolbars, and Status Bar are also included in the Impress window.

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1. A(n) ____ provides good control for distributed computing systems and allows their resources to be accessed in a unified way.

2. The term ____ is used to describe a specific set of rules used to control the flow of messages through the network.

3. A(n) ____ is a data-link layer device used to interconnect multiple networks using the same protocol.

4. A(n) ____ translates one network’s protocol into another, resolving hardware and software incompatibilities.

5. The ____ is the most widely used protocol for ring topology.

6. The ____ makes technical recommendations about data communication interfaces.

7. The term ____ refers to the name by which a unit is known within its own system.

8. The term ____ refers to the name by which a unit is known outside its own system.

9. Which network topology do you think your school employs, and why? Give reasons to support your answer.

10. What is Domain Name Service (DNS)? Describe its functionalities.

Answers

A(n) middleware provides good control for distributed computing systems and allows their resources to be accessed in a unified way.

What is Protocol?

The term protocol is used to describe a specific set of rules used to control the flow of messages through the network.

A(n) bridge is a data-link layer device used to interconnect multiple networks using the same protocol.

A(n) gateway translates one network’s protocol into another, resolving hardware and software incompatibilities.

The Token Ring protocol is the most widely used protocol for ring topology.

The International Organization for Standardization (ISO) makes technical recommendations about data communication interfaces.

The term node refers to the name by which a unit is known within its own system.

The term host refers to the name by which a unit is known outside its own system.

The network topology that my school employs is likely a star topology. This is because a central server likely connects to multiple devices, such as computers and printers, through individual connections rather than a continuous loop like a ring or mesh topology.

Domain Name Service (DNS) is a system that translates domain names into IP addresses, allowing users to access websites using easy-to-remember names rather than numerical addresses. It functions by storing a database of domain names and their corresponding IP addresses, and when a user inputs a domain name into their browser, the DNS system uses this database to provide the corresponding IP address and establish a connection to the website.

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Draw an ER diagram for the following car sharing system:
In the car sharing system, a CarMatch application has record of anyone who would like to share his/her car, known as a CarSharer. An Administrator registers all the potential CarSharers and with their first name, last name, home address, and date of birth. Each CarSharer is also assigned a unique id. A CarSharer can take policies issued by the Insurance Company. Each policy has a number, premium, and a start date. A CarSharer needs to know the start and destination address of each Journey.

Answers

An ER diagram for the following car sharing system is given below.

             +--------------+       +-------------+         +-----------------+

             |  CarSharer   |       |   Journey   |         |  InsurancePolicy |

             +--------------+       +-------------+         +-----------------+

             |    id        |       |    id       |         |     number      |

             |  first_name  |       |  start_addr |         |     premium     |

             |  last_name   |       |destin_addr  |         |  start_date     |

             |  home_addr   |       | carsharer_id|  +----->|  carsharer_id   |

             | date_of_birth|  +--->|             |  |      +-----------------+

             +--------------+       +-------------+  |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 |                     |

                                 +---------------------+

                                            |

                                            |

                                     +-------------+

                                     |  Administrator  |

                                     +-------------+

                                     |     id        |

                                     +--------------+

What is the diagram about?

The diagram shows the relationships between the entities in the system.

A CarSharer has a unique id and is associated with many Journeys and InsurancePolicies. They have properties such as first_name, last_name, home_addr, and date_of_birth.

A Journey has a unique id and is associated with one CarSharer. It has properties such as start_addr and destin_addr.

An InsurancePolicy has a unique number and is associated with one CarSharer. It has properties such as premium and start_date.

An Administrator has a unique id and is responsible for registering potential CarSharers.

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machine learning naives bales + ensemble methods

Answers

The claim "This ensemble model needs to select the number of trees used in the ensemble as to avoid overfitting" is generally true for AdaBoost.

How to explain the model

Regarding the provided information, for AdaBoost using decision tree stumps, the algorithm would iteratively re-weight the misclassified samples from previous iterations, giving more emphasis on the ones that were harder to classify. This allows the algorithm to focus on the harder samples and eventually improve the overall accuracy.

The weights of the samples in AdaBoost would depend on the error rate of the current classifier, which is a combination of the current weak classifier and the previously selected ones.

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• Explain the Stages and development of Computer Starting from the time of Abacus to the present time​

Answers

Answer:

Explanation:

The development of computers has been a long and fascinating journey, spanning thousands of years. Here are the stages and key milestones in the history of computing:

1) Abacus (c. 3000 BC): The abacus is one of the oldest known computing devices, consisting of a frame with beads that can be moved along rods to perform basic arithmetic calculations.

2) Mechanical calculators (17th century): In the 17th century, inventors such as Blaise Pascal and Gottfried Leibniz developed mechanical calculators capable of performing arithmetic calculations more quickly and accurately than the abacus.

3) Analytical Engine (1837-1871): The Analytical Engine was designed by Charles Babbage and was considered the first mechanical computer. It could perform complex mathematical calculations and store information in memory.

4) Vacuum tube computers (1930s): The use of vacuum tubes in computers allowed for the creation of electronic computers. These computers used vacuum tubes to perform logic and arithmetic operations and were used primarily for scientific and military applications.

5) Transistor computers (late 1940s-1950s): The invention of the transistor in 1947 led to the development of transistor-based computers, which were smaller, faster, and more reliable than vacuum tube computers.

6) Integrated circuit computers (1960s-1970s): The development of integrated circuits in the 1960s allowed for the creation of smaller and more powerful computers that were capable of performing more complex calculations and storing more data.

7) Personal computers (1970s-1980s): The introduction of the personal computer in the 1970s and 1980s revolutionized computing, making computers more accessible to the general public and leading to the development of the modern computer industry.

8) Internet and World Wide Web (1990s): The creation of the internet and the World Wide Web in the 1990s revolutionized the way people interact with computers, making it possible to access vast amounts of information and connect with people all over the world.

9) Mobile computing (2000s-present): The rise of smartphones and tablets in the 2000s and beyond has led to a new era of mobile computing, with people now able to access the internet and perform complex computing tasks from anywhere at any time.

Overall, the development of computers has been a long and ongoing process, with each stage building on the discoveries and inventions that came before it. The future of computing is sure to be just as exciting as the past and present.

I need mega help ASAP. I need this code in java and I've attempted so many different codes and none work. Please help! This is what I have so far; the instructions are in the image below!




import java.util.Scanner;

public class MyProgram
{
public static void main(String[] args)
{

int num = 0;
Scanner input = new Scanner(System.in);

while(true){
try{
System.out.println("Enter a number.");
num = input.nextInt();
if(num <= 0){
System.out.println("Number must be greater than 0");
continue;
}
break;
}
catch(Exception e){
System.out.println("Print error message here");
input.nextLine();
}

}

//make calculations
//double bmi = 0;
//bmi = (704 * weight) / (height * height);

System.out.println("Program ended");
}
}

Answers

Answer:

import java.util.Scanner;

public class MyProgram {

   public static void main(String[] args) {

       Scanner input = new Scanner(System.in);

       // Prompt the user to enter their weight in kilograms.

       System.out.println("Enter your weight in kilograms: ");

       double weight = input.nextDouble();

       // Prompt the user to enter their height in meters.

       System.out.println("Enter your height in meters: ");

       double height = input.nextDouble();

       // Calculate the BMI.

       double bmi = (weight * 703) / (height * height);

       // Print the BMI.

       System.out.println("Your BMI is " + bmi);

       // Classify the BMI.

       if (bmi < 18.5) {

           System.out.println("You are underweight.");

       } else if (bmi < 25) {

           System.out.println("You have a normal weight.");

       } else if (bmi < 30) {

           System.out.println("You are overweight.");

       } else if (bmi < 35) {

           System.out.println("You are obese.");

       } else {

           System.out.println("You are severely obese.");

       }

   }

}

Which is a tool that allows you to copy formatting from one place and apply it to other places?
Copy and Paste
Pagination
Styles
Format Painter

Answers

The Format Painter is a formatting tool that facilitates copying of formats from one text section to others by applying the same styles swiftly and easily.

What is it used for?

It is typically integrated into word processors such as G o o gle Docs or Microsoft Word, rendering it an efficient method for editing texts in various settings. Using this tool, users enjoy effortless manipulation of font types, hues, and alignment, among other forms of formatting requirements.

The steps involved are straightforward; simply pinpoint the origin section, highlight your preferences with just one click, activate the painting feature, and brush over the targeted areas you desire, achieving a uniform format entirely anew.

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Part II: additional problems 1, 2, and 3 listed below.
For each problem:
a. Identify the given table as 1NF, 2NF, 3NF, or UNF (contains repeating group).
b. Identify all partial and transitive dependencies by drawing a dependency diagram
(for a UNF table, transform it to 1NF, then draw the dependency diagram).
c. Transform all tables into 3NF by following the steps below. For c, you do NOT have
to draw dependency diagrams.

1. STUDENT (STUDENT SSN, ST_NAME, MAJOR, ADVISOR NUM, ADV_NAME,
ADV OFFICE. ADV PHONE ST CREDITHRS, CLASS STANDING)
where:
STUDENT SSN
- All other attributes
ADVISOR NUM› ADV_NAME, ADV OFFICE, ADV PHONE
ST CREDIT HRS > CLASS STANDING
Note: XYZ > ORS means that XYZ determines ORS
You can also find this notation in figure 6.3 and definition of determination on page
62.
2. MOVIE (MOVIE NUM, MOVIE TITLE, STAR NUM, STAR NAME)
Sample data: (You can determine primary key based on the sample data.)
MOVIE NUM
MOVIE TITLE
STAR NUM
I STAR NAME
M001
The Mummy
S001
Brendan Fraser
S002
Rachel Weisz
M002
Crash
S001
Brendan Fraser
S003
Sandra Bullock
(You may notice one movie can feature many stars and one star can act in many movies.)
3. MOVIE (MOVIE NUM, MOVIE TITLE, DIRECTOR NUM, DIR NAME)
where:
MOVIE NUM
> MOVIE TITLE, DIRECTOR NUM, DIR NAME
DIRECTOR_NUM >
DIR NAME

Answers

The problem involves analyzing given tables and identifying their normal form, dependencies, and transforming them to 3NF if necessary.

What is the explanation for the above response?



1) a. UNF (contains a repeating group)

b.

STUDENT SSN > ST_NAME, MAJOR, ADVISOR NUM, ST CREDITHRS, CLASS STANDING

ADVISOR NUM > ADV_NAME, ADV OFFICE, ADV PHONE

STUDENT SSN is the primary key of the table.

c.

1NF:

STUDENT (STUDENT SSN, ST_NAME, MAJOR, ADVISOR NUM, ST CREDITHRS, CLASS STANDING)

ADVISOR (ADVISOR NUM, ADV_NAME, ADV OFFICE, ADV PHONE)



2)

a. 1NF

b.

MOVIE NUM > MOVIE TITLE

STAR NUM > STAR NAME

MOVIE NUM, STAR NUM is the primary key of the table.

c.

1NF:

MOVIE_STAR (MOVIE NUM, STAR NUM)

STAR (STAR NUM, STAR NAME)

MOVIE (MOVIE NUM, MOVIE TITLE)


3)

a. 3NF

b.

MOVIE NUM > MOVIE TITLE

DIRECTOR NUM > DIR NAME

MOVIE NUM is the primary key of the table.

c.

The given table is already in 3NF, so no transformation is needed.

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define Artificial intelligence?​

Answers

Artificial intelligence - When a computer replicates human problem solving abilities to perform functions

I'm a little confused about how this is worked out. The value on the left is the largest binary value, and the right is the smallest.


0.0011₂ < 0.24₁₀ < 0.0100₂

Answers

The decimal value 0.24 is in the middle and the binary value 0.0100 is the greatest of the three numbers, with binary value 0.0011 being the lowest.

Which decimal binary number is the smallest?

There is only one 4-digit binary number, which is zero. The smaller number in binary, decimal, and hexadecimal bases is actually this one. Therefore, 0 is the smallest 4-digit binary number and it remains 0 when expressed in any other base.

What does 0.1 mean in binary form?

The binary representation of the number 0.1 is 0.00011001100110011... The 0011 pattern is infinitely repeatable. The binary equivalent of 0.1 cannot be stored. 1/10 is equal to 0.1, as we all know.

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