Hw3. 12. Relative error evaluation as a student who has recently taken cs 357, paul is eager to put his knowledge learned in the class to use in real-world applications. He notices the weather forcast in champaign-urbana area is not very accurate and is determined to make it better. After a summer of hard work, he has finished implementing his new software for predicting wind speed. Eager to test how well his software performs, he uses it to predict the wind speed for the next days and then collects the actual wind data during these days. He stores both his predicted data and the actual data in numpy arrays. To understand how well paul's software performs, write a program to compute the maximum relative error of his prediction across these days. Hint: consider using numpy. Ndarray. Max to compute the maximum value element in an array. The setup code gives the following variables: name type description n int the number of days predicted numpy. Ndarray array of length representing the predicted wind speed for these days actual numpy. Ndarray array of length representing the actual wind speed for these days your code snippet should define the following variables: name type description max rel error float the maximum relative error of paul's prediction across these days

Denormalization is a database optimization technique in which we add redundant data to one or more tables.

Denormalization is the process of adding precomputed redund data to an otherwise normalized relational database to improve read performance of the database. Normalizing a database involves removing redundancy so only a single copy exists of each piece of information in the database.

It is a technique used on a previously-normalized database to increase the performance of the database .In execution, denormalization is the process of improving the performance of reading a database, at the expense of losing some write performance, by adding redundant copies of data or by grouping it.

Advantages of Database denormalization:

As there is no need to use joins between tables if there is database denormalization it is possible to extract the necessary information from one table, which automatically increases the speed of  execution of any query .Additionally, this solution saves memory. Writing queries is much easier.

Denormalization is used by the database managers to increase the performance of a database. Some of its advantages are: it minimize the need for joins and it reduces  the number of tables.

Learn more about denormalization here:-

brainly.com/question/13262195

#SPJ4

Columns and rows in a spreadsheet collectively are called Option (A) worksheet. A worksheet is the primary working area in a spreadsheet software.

It consists of a grid of cells arranged in rows and columns, with each cell being identified by its column and row number. The columns are identified by letters, while the rows are identified by numbers.

The user can enter data, text, or formulas into each cell, and the software will automatically perform calculations based on the entered data. The worksheet can be used to organize, store and analyze data, perform complex calculations, create charts and graphs, and much more. By providing a visual representation of data, worksheets make it easy to analyze large data sets and communicate complex information in a simple and understandable way. Columns and rows in a spreadsheet collectively are called a worksheet. A worksheet is the primary working area in a spreadsheet software.

Learn more about software :

https://brainly.com/question/1022352

#SPJ4

Yes, the United States still has underground missile silos. As of 2020, the United States has approximately 400 Minuteman III intercontinental ballistic missiles (ICBMs) in underground silos across the country.

What is ICBM?
Intercontinental Ballistic Missiles (ICBMs) are long-range, nuclear-armed missiles capable of travelling thousands of miles to reach their targets. They are the most powerful weapons currently deployed by any nation and are capable of delivering a devastating payload to any point on the planet. ICBMs were developed during the Cold War as part of an arms race between the United States and the Soviet Union to deter each other from launching a nuclear attack.

To know more about ICBM
https://brainly.com/question/15091559
#SPJ4

In order to separate the arguments in a functions we apply the commas function .

A function is a set of instructions that, when called upon, carry out a particular task or set of tasks. It is a kind of routine or procedure that, given a certain input, produces a certain result.

A function can produce multiple outputs from a variety of inputs. Additionally, it is a standalone block of code that can be reused multiple times without having to be written over.

Functions are an essential component of programming and can be utilized to resolve difficult issues. They make it simpler for us to debug a large issue by allowing us to break it down into smaller, more manageable pieces.

Learn more about functions:

brainly.com/question/20476366

#SPJ4

using the knowledge of computational language in JAVA it is possible to write a code that  illustrates the use of conditional statements.

def GPAcalc(g,w):

if g == "a" or g == "A":

return 4+ w

elif g == "B" or g == "b":

return 3+ w

elif g == "C" or g == "c":

return 2+ w

elif g == "D" or g == "d":

return 1+ w

elif g == "F" or g == "f":

return 0+ w

else:

return "Invalid"

grade = input("Enter your Letter Grade: ")

weight = int(input("Is it weighted?(1 = yes, 0 = no) "))

gpa = GPAcalc(grade,weight)

print("Your GPA score is: " + str(gpa))

def GPAcalc(g):

if g == "a" or g == "A":

return 4

elif g == "B" or g == "b":

return 3

elif g == "C" or g == "c":

return 2

elif g == "D" or g == "d":

return 1

elif g == "F" or g == "f":

return 0

else:

return "Invalid"

grade = input("Enter your Letter Grade: ")

gpa = GPAcalc(grade)

print("Your GPA score is: " + str(gpa))

See more about JAVA at brainly.com/question/29897053

#SPJ1

This message usually appears when there is a problem with the user's account, such as a login issue or a security breach. It could also be due to a technical problem with the website or the user's device.

What is Website?
A website is an online collection of content, such as webpages, images and videos, that is hosted on a web server and accessible via the Internet. Websites typically consist of multiple webpages that can be accessed by clicking on hyperlinks. They are typically used for informational, educational, commercial, or entertainment purposes. Websites are typically created and maintained by an individual, business, or organization, and can be accessed from any computer with an Internet connection.

To know more about Website
https://brainly.com/question/28431103
#SPJ4

To make the circle shrink, you can start by using a loop to decrease the circle's size over time.

To know more about coding visit:

https://brainly.com/question/17293834

#SPJ1

B is a technique that is used to send a ping message while providing the ping's source address. Use the ping command without any additional arguments.

Use the "ping" command with the "source" option and the IP address of the source interface to specify the source address for the ping message. For instance: Ping source source IP address at destination IP address. For instance, you would give the following command to ping IP address 10.0.0.1 from the source interface with IP address 192.168.1.1: Ping source 10.0.0.1 at 192.168.1.1. A packet is sent from one device to the other specified device when the ping command is used. When using the ping command, an echo request kind of packet is transmitted. One system can use an echo request to see if another system is connected to the network and operational.

Learn more about Ping message here:

https://brainly.com/question/29974328

#SPJ4

Adjacent JSX elements must be wrapped in an enclosing tag because JSX is an XML-like syntax, and therefore requires that all elements be properly nested inside of a parent element.

What is XML?
XML (eXtensible Markup Language) is a markup language used to store and transport data. It is a hierarchical language that is both human-readable and machine-readable. XML is designed to be self-descriptive, allowing for data to be shared between different systems without prior knowledge of the data structure. XML can be used to create documents containing text, images, audio, video, and other types of data. XML documents are typically used to transport data between web servers and clients, to store data in databases, and to create user interfaces.

To know more about XML
https://brainly.com/question/22792206
#SPJ4

Assume a scenario where the first section is lost but the second one reaches B. The first segment of the sequence number, or 90, will be the acknowledgment number that Host B transmits to Host A.

As far as we are aware, the 32-bit sequence number has two responsibilities. a- - - - - - - - - — - - - - - - - - - The genuine beginning data bit's sequence number is then that number plus one. When the SYN flag is set to 0, the average sequence number of the first data bit in this section is used as the value for the current session. At the site, the initial sequence number is 2,171, which corresponds to the the SYN segment, or 2171. The question mentions that there are 1000 bytes of data. Same-layer contact is demonstrated by the TCP process on one computer designating a TCP segment as segment 1, followed by the receiving computer acknowledging the reception of segment 1. Below, this is further discussed.

Learn more about Data bit here:

https://brainly.com/question/16693255

#SPJ4

The default GPO that contains a policy to guard against multiple passwords attempts and lockout users is the "Account Lockout Policy" located in the "Default Domain Policy" GPO.

In a Windows domain, the "Default Domain Policy" Group Policy Object (GPO) is the default policy that is applied to all workstations in the domain unless a specific policy is defined at a higher level. The "Account Lockout Policy" is a security policy within this GPO that specifies how many failed login attempts are allowed before a user account is locked out, and for how long the account will remain locked.

By enabling the "Account Lockout Policy" in the "Default Domain Policy" GPO, you can protect all workstations in the domain against brute-force attacks, where an attacker tries multiple passwords in rapid succession to gain access to a user's account. Once the number of failed login attempts exceeds the threshold defined in the policy, the user's account will be locked out, preventing any further login attempts. The account will remain locked out for the duration specified in the policy, after which the user can attempt to log in again.

Enabling this policy is a best practice for securing your Windows domain against unauthorized access, and it is recommended that you adjust the settings to meet the security needs of your organization.

Learn more about brute-force attacks here:

https://brainly.com/question/28119068

#SPJ4

By recording all transactions across the business network among participants. The aspect of blockchain that creates the system of record is its distributed ledger technology.

What Is Blockchain?

Blockchain is a decentralized digital ledger technology that allows multiple parties to securely and transparently record, store and verify transactions without the need for intermediaries, such as banks or other third-party institutions. In a blockchain network, transactions are grouped into blocks and then added to a chain of previous blocks, forming an immutable and transparent record of all transactions on the network.

Each block in a blockchain contains a cryptographic hash of the previous block, which creates a secure and tamper-proof link between all the blocks. This makes it virtually impossible to alter or manipulate any transactions on the network without detection, as any changes to a block would affect all subsequent blocks in the chain, causing the hash values to become invalid.

A distributed ledger is a database that is spread across a network of computers, where each computer on the network has a copy of the entire ledger. This means that every transaction that occurs on the network is recorded on multiple copies of the ledger, making it difficult to alter or tamper with the records.

In a blockchain network, transactions are grouped into blocks and then added to the chain of previous blocks, forming a chronological and immutable record of all transactions on the network. This decentralized and transparent system of record provides a high level of security, privacy, and reliability, and eliminates the need for intermediaries or central authorities to validate transactions.

Therefore,  the combination of the distributed ledger, consensus mechanism, and cryptographic hash functions used to link each block together creates a transparent, secure, and auditable system of record for all transactions on the network.

To learn more about Blockchain click here

https://brainly.com/question/30088493

#SPJ4

In OS/161, the system call number for reboot is RB_REBOOT. This value is not available to user-space programs because it is an internal kernel operation that should not be exposed to user programs.

System calls are the interface between the user programs and the kernel, allowing user programs to request services from the kernel. However, some system calls are not intended for user programs to access directly, such as rebooting the system. The system call number for such operations are reserved for internal kernel use only and are not exposed to user programs. Therefore, the value of RB_REBOOT is not available to user-space programs. In OS/161, the system call number for reboot is RB_REBOOT. This value is not available to user-space programs because it is an internal kernel operation that should not be exposed to user programs.

Learn more about kernel :

https://brainly.com/question/28559095

#SPJ4

A Root CAs is Certificate Authority that owns one or more trusted roots which allows them to have roots in the trust stores. Intermediate CAs is the Certificate Authority issued off an intermediate root.

What type of certificates are requested?

The certificate authority completes a verification process, on the type of certificate requested:

a) Domain validation: The certificate authority verifies that the manager is the requestor of the domain.

b) Organization validation: The certificate authority (CAs) reviews information that the certificate requestor provides to ensure the organization is legitimate.

c) Extended validation: The certificate authority (CAs) go through the requestor's organization and go beyond the requirements of the validation process to make sure the organization is truly legitimate.

To know more about Certificate Authority, Check out:

https://brainly.com/question/28939381

#SPJ1

True. Recovery Audit Contractors (RAC) are independent contractors hired by the Centers for Medicare and Medicaid Services (CMS) to identify and correct improper payments in the Medicare program.

Recovery Audit Contractors (RAC) auditors are independent contractors hired by the Centers for Medicare & Medicaid Services (CMS) to identify and recover improper payments made to healthcare providers. They are responsible for reviewing claims data and medical records to identify overpayments or underpayments.

RACs review claims submitted by providers to ensure that they are accurate and comply with Medicare rules and regulations. If they identify any improper payments, they work with the provider to recover the funds. RACs are paid on a contingency basis, meaning that they receive a percentage of the improper payments that they recover. This incentivizes them to identify as many improper payments as possible.

Learn more about Recovery Audit Contractors (RAC) at https://brainly.com/question/30644144

#SPJ11

Value will be printed in the console after this series of commands is 10, printed in the console after the series of commands .

The get() method of the ArrayList class is used to accept  an integer representing the index value and then it returns the element of the current ArrayList object on to the  specified index. Therefore, if you pass 0 to this method you can get the first element of the current Array List and, if you pass list.

If the user want to use the ArrayList class,firstly  the ArrayList class needs to be imported from the java package and then it can be used. This can be done by writing import java. util. Array List at the top of the class file.

Example of array list package :-

import java.util.ArrayList;

public class Example {

 public static void main(String[] args)

 {

     // create an empty array list with an initial capacity

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    // use add() method to add

    arrlist.add(15);

    arrlist.add(22);

    arrlist.add(30);

    arrlist.add(40);

    // Add 25  at third position

    arrlist.add(2,25);

     // let us print all the elements available in list

    for (Integer number : arrlist) {

       System.out.println("Number = " + number);

    }

 }

}

Value will be printed in the console after this series of commands is 10, printed in the console after the series of commands .

Question)-What value will be printed in the console after this series of commands? Assume that the ArrayList package has been imported.

ArrayList<Integer> array = new ArrayList<Integer>(); array.add(3); array.add(9); array.add(10); array.remove(1); array.set(0, 3); int num = array.get(1); System.out.println(num);

Learn more about console here:-

brainly.com/question/28702732

#SPJ4

Java is known as an Option (C) extensible language because it allows programmers to define and create new classes as needed.

This feature makes it easy to add new functionality and customize the language to suit specific programming needs. By creating new classes, programmers can encapsulate complex logic, data structures, and behavior into reusable components, which can be leveraged by other parts of the program. Additionally, the ability to define new classes enables developers to extend the capabilities of existing Java libraries and frameworks, further enhancing the language's functionality. Overall, the extensibility of Java makes it a flexible and powerful programming language that can be adapted to a wide range of use cases and requirements. Java is known as an Option (C) extensible language because it allows programmers to define and create new classes as needed.

Learn more about Java :

https://brainly.com/question/29897053

#SPJ4

True. The Formula bar is used to edit and view the contents of a cell in a spreadsheet.

What is Spreadsheet?
A spreadsheet is a computer application program used to store, organize and manipulate data. It is a type of software program designed to create, sort and analyze numerical data in tabular form. Spreadsheets are generally used for financial information, such as budgeting and accounting, but can also be used for data analysis and data visualization. Spreadsheets often contain formulas that allow the user to quickly calculate results from the data entered. Common features of a spreadsheet include the ability to add and delete columns and rows, copy and paste data, create graphs and charts, and perform calculations with formulas.

To know more about Spreadsheet
https://brainly.com/question/26919847
#SPJ4

Leticia isn’t sure why a picture isn’t appearing on her web page when it should. First of all Change the picture to HTML.

HTML is an acronym for hypertext markup language and it is a standard programming language which is used for designing, developing and creating web pages.

The head contains information such as version of HTML, title of a page, metadata, link to custom favicons and CSS etc. The body of the HTML document contains the contents or informations that a web page displays.

Therefore, Leticia isn’t sure why a picture isn’t appearing on her web page when it should. First of all Change the picture to HTML.

Learn more about HTML on:

https://brainly.com/question/17959015

#SPJ1

Mikage needs to learn to accept change, which was the point of the change of address cards.

Despite the fact that they are not related, Eriko refers to Mikage as her "daughter" and "dear child." Even though Yuichi and Mikage's grandma are not connected, Mikage says that Yuichi's grief is so great that it looks like his love exceeds her own when Mikage's grandmother passes away.

Mikage's dream depicts where Mikage is in her grieving process: she has reconnected with a sense of living (represented by the cleaning kitchen) and with others (represented by Yuichi), which fills the void and causes pain with joy (represented by the lighthouse in the song).

To know more about the point visit:-

https://brainly.com/question/28231708

#SPJ4

In the majority of computer programming languages, a while loop is a control flow statement that permits code to be executed repeatedly based on a defined Boolean condition.

While loops are simply iterative if statements. When a specific condition is met, the while statement, also known as a while loop, loops through the code provided in its body. The loop ends if or when the condition is no longer true. When the program is running, the statements are continually executed using both the for loop and the while loop. A for loop is used when the number of iterations is known, whereas a while loop runs continuously until the program's assertion is proven incorrect. This is the main distinction between the two types of loops. The condition of a while loop is always carried out following the loop's body. It goes by the name as well.

Learn more about Loop here:

https://brainly.com/question/30509537

#SPJ4

In order for the state machine to output the string 101 010 011 010 011 101 when given the input string 011011, the output value at state c should be 110.

The state machine diagram given in the question represents finite-state machine with four states: a, b, c, and d. The transition table indicates the state transitions for each input bit.

To determine the output for a given input sequence, we start in the initial state (a in this case) and follow the transitions based on the input bits. At each state, the output value is determined based on the state and the input bit.

In this case, the input string is 011011. Starting in state a, we follow the transitions for each input bit to determine the sequence of states and output values:

So the output sequence for the input string 011011 is 101 010 011 010 011 101.

The question asks us to determine the output value at state c in order for the state machine to produce the desired output sequence. We know that the output at state c must be 0 when the input bit is 1, so the correct answer is 110.

Learn more about finite-state machine here:

https://brainly.com/question/13981199

#SPJ4

The most common method used to configure the connection to the phone company is DSL PPPoE . This protocol allows the router to create a dedicated connection with the phone company's DSL modem.

The connection  is that both are related to written work. When writing any form of paper, essay, or article, it is important to be mindful of the amount of words used. For academic work, most professors will require that the paper be 100 words or more. While it is important to meet this requirement, it is also important to make sure that the written work is free of plagiarism. Plagiarism is the act of taking the words of another and using them as one’s own without giving proper attribution.

To learn more about connection

https://brainly.com/question/1970643

#SPJ1

The proper way to create a thread class when the class already inherits members from another class is to extend the Thread class in your class and override the run() method.

What is Threads?
Threads is an operating system feature that enables multiple tasks to be performed at once. It is an approach to concurrent programming that allows a program to divide itself into two or more simultaneously running tasks. These tasks are known as threads and are executed concurrently. Threads are a lightweight alternative to processes, making them ideal for applications that require multiple computations to be performed simultaneously. Threads allow for efficient multitasking and can reduce the amount of time it takes to complete a task.

To know more about Threads
https://brainly.com/question/13155644
#SPJ4

The value in the second field of the passwd file for a particular user ID typically represents the user's encrypted password.

The password is usually stored as a one-way hash, which is a fixed-length value generated from the original password using a cryptographic algorithm. The hashed password is then stored in the second field of the passwd file, between the first and second colons. When a user logs in, their entered password is hashed using the same algorithm, and the resulting hash is compared with the stored hash. If the two hashes match, the user is granted access to the system. This helps ensure the security of user passwords by making it difficult to retrieve the original password from the stored hash value. The value in the second field of the passwd file for a particular user ID typically represents the user's encrypted password.

Learn more about algorithm :

https://brainly.com/question/22984934

#SPJ4

The four most typical permission levels are poor, permissive, prudent, and paranoid. This is true in terms of security controls.

IAn intrusion detection system frequently use pattern correlation to find threats. An IDS can check network packets against a database of recognised cyberattack signatures using this technique.

The Committee of Sponsoring Organizations (COSO) is a collection of IT management best practises. All controls are examined and measured during the secure phase of a security evaluation in order to record actions and changes on the system.

To know more about security visit:-

https://brainly.com/question/30009471

#SPJ4

To iterate through the objects in a collection, use an item-based for loop. Applying some operations to an item is helpful.

An index-based for loop is used to repeatedly run certain logic. While loop is also helpful to repeatedly carry out a logic. To iterate through the objects in a collection, use an item-based for loop. Applying some operations to an item is helpful. An index-based for loop is used to repeatedly run certain logic. While loop is also helpful to repeatedly carry out a logic. The sample below in c#.net demonstrates this. system use; empty main () names=new names[20] in a string; counter int = 0; /for loop with an index, for (int i=0;i++;i++;i++) for loop that is item-based. string s in names; foreach console.writeline(s); } whilst loop. while(counter<20) { console.read(names[counter]; console.read(names[i]);counter++; } }counter++; } }

Learn more about Item-based for loop here:

https://brainly.com/question/13099364

#SPJ4

Blockchain-based Bitcoin was seen as increasing the difficulty of double-spending, which is the act of spending the same digital currency more than once.

What is Blockchain?
Blockchain is a distributed and decentralized digital ledger system that records and stores data in a secure and immutable manner. It is a chain of blocks, wherein each block contains a cryptographic hash of the previous block, transaction data and a timestamp. This technology helps facilitate secure, transparent, and immutable transactions by using a consensus mechanism such as Proof-of-Work or Proof-of-Stake. This technology is used in various industries including finance, healthcare, supply chain, and more. Blockchain technology provides businesses with a secure and efficient way to track and manage their transactions.

To know more about Blockchain
brainly.com/question/30142702
#SPJ4